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  • 型号: SN74AHC244QPWRG4Q1
  • 制造商: Texas Instruments
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SN74AHC244QPWRG4Q1产品简介:

ICGOO电子元器件商城为您提供SN74AHC244QPWRG4Q1由Texas Instruments设计生产,在icgoo商城现货销售,并且可以通过原厂、代理商等渠道进行代购。 SN74AHC244QPWRG4Q1价格参考。Texas InstrumentsSN74AHC244QPWRG4Q1封装/规格:逻辑 - 缓冲器,驱动器,接收器,收发器, Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP。您可以下载SN74AHC244QPWRG4Q1参考资料、Datasheet数据手册功能说明书,资料中有SN74AHC244QPWRG4Q1 详细功能的应用电路图电压和使用方法及教程。

产品参数 图文手册 常见问题
参数 数值
产品目录

集成电路 (IC)半导体

描述

IC BUFF/DVR TRI-ST DUAL 20TSSOP缓冲器和线路驱动器 Auto Cat Octal Bfr/Drvr

产品分类

逻辑 - 缓冲器,驱动器,接收器,收发器

品牌

Texas Instruments

产品手册

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产品图片

rohs

符合RoHS无铅 / 符合限制有害物质指令(RoHS)规范要求

产品系列

逻辑集成电路,缓冲器和线路驱动器,Texas Instruments SN74AHC244QPWRG4Q174AHC

数据手册

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产品型号

SN74AHC244QPWRG4Q1

产品种类

缓冲器和线路驱动器

传播延迟时间

11.9 ns at 3.3 V

低电平输出电流

8 mA

供应商器件封装

20-TSSOP

元件数

2

其它名称

296-23943-1

包装

剪切带 (CT)

单位重量

77 mg

商标

Texas Instruments

安装类型

表面贴装

安装风格

SMD/SMT

封装

Reel

封装/外壳

20-TSSOP(0.173",4.40mm 宽)

封装/箱体

TSSOP-20

工作温度

-40°C ~ 125°C

工厂包装数量

2000

最大工作温度

+ 125 C

最小工作温度

- 40 C

极性

Non-Inverting

标准包装

1

每元件位数

4

每芯片的通道数量

8

电压-电源

2 V ~ 5.5 V

电流-输出高,低

8mA,8mA

电源电压-最大

5.5 V

电源电压-最小

2 V

电源电流

0.04 mA

系列

SN74AHC244-Q1

输入线路数量

8

输出类型

3-State

输出线路数量

8

逻辑类型

缓冲器/线路驱动器,非反相

逻辑系列

AHC

高电平输出电流

- 8 mA

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PDF Datasheet 数据手册内容提取

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:4)(cid:4)(cid:9)(cid:10)(cid:11) (cid:12)(cid:7)(cid:13)(cid:5)(cid:14) (cid:15)(cid:16)(cid:17)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:19)(cid:22)(cid:23)(cid:18)(cid:19) (cid:24)(cid:22)(cid:13)(cid:6) (cid:25)(cid:9)(cid:1)(cid:13)(cid:5)(cid:13)(cid:18) (cid:12)(cid:16)(cid:13)(cid:26)(cid:16)(cid:13)(cid:1) SCLS526A − AUGUST 2003 − REVISED APRIL 2008 (cid:1) Qualified for Automotive Applications DW OR PW PACKAGE (cid:1) (TOP VIEW) ESD Protection Exceeds 1500 V Per MIL-STD-883, Method 3015; Exceeds 150 V Using Machine Model (C = 200 pF, R = 0) 1OE 1 20 VCC 1A1 2 19 2OE (cid:1) EPIC (Enhanced-Performance Implanted 2Y4 3 18 1Y1 CMOS) Process 1A2 4 17 2A4 (cid:1) Operating Range 2-V to 5.5-V VCC 2Y3 5 16 1Y2 1A3 6 15 2A3 description/ordering information 2Y2 7 14 1Y3 1A4 8 13 2A2 This octal buffer/driver is designed specifically to 2Y1 9 12 1Y4 improve the performance and density of 3-state GND 10 11 2A1 memory-address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74AHC244 is organized as two 4-bit buffers/line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup CC resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. (cid:1) ORDERING INFORMATION ORDERABLE TOP-SIDE TA PACKAGE‡ PART NUMBER MARKING SOIC − DW Tape and reel SN74AHC244QDWRQ1 AHC244Q1 −−4400°°CC ttoo 112255°°CC TSSOP − PW Tape and reel SN74AHC244QPWRQ1 AHC244Q1 †For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at http://www.ti.com. ‡Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging. FUNCTION TABLE (each 4-bit buffer/driver) INPUTS OOUUTTPPUUTT OE A Y L H H L L L H X Z Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet. EPIC is a trademark of Texas Instruments. (cid:26)(cid:19)(cid:12)(cid:21)(cid:16)(cid:7)(cid:13)(cid:22)(cid:12)(cid:2) (cid:21)(cid:5)(cid:13)(cid:5) (cid:27)(cid:28)(cid:29)(cid:30)(cid:31)!"#(cid:27)(cid:30)(cid:28) (cid:27)$ %&(cid:31)(cid:31)’(cid:28)# "$ (cid:30)(cid:29) (&)*(cid:27)%"#(cid:27)(cid:30)(cid:28) +"#’, Copyright  2008, Texas Instruments Incorporated (cid:26)(cid:31)(cid:30)+&%#$ %(cid:30)(cid:28)(cid:29)(cid:30)(cid:31)! #(cid:30) $(’%(cid:27)(cid:29)(cid:27)%"#(cid:27)(cid:30)(cid:28)$ (’(cid:31) #-’ #’(cid:31)!$ (cid:30)(cid:29) (cid:13)’."$ (cid:22)(cid:28)$#(cid:31)&!’(cid:28)#$ $#"(cid:28)+"(cid:31)+ /"(cid:31)(cid:31)"(cid:28)#0, (cid:26)(cid:31)(cid:30)+&%#(cid:27)(cid:30)(cid:28) ((cid:31)(cid:30)%’$$(cid:27)(cid:28)1 +(cid:30)’$ (cid:28)(cid:30)# (cid:28)’%’$$"(cid:31)(cid:27)*0 (cid:27)(cid:28)%*&+’ #’$#(cid:27)(cid:28)1 (cid:30)(cid:29) "** ("(cid:31)"!’#’(cid:31)$, POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:4)(cid:4)(cid:9)(cid:10)(cid:11) (cid:12)(cid:7)(cid:13)(cid:5)(cid:14) (cid:15)(cid:16)(cid:17)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:19)(cid:22)(cid:23)(cid:18)(cid:19) (cid:24)(cid:22)(cid:13)(cid:6) (cid:25)(cid:9)(cid:1)(cid:13)(cid:5)(cid:13)(cid:18) (cid:12)(cid:16)(cid:13)(cid:26)(cid:16)(cid:13)(cid:1) SCLS526A − AUGUST 2003 − REVISED APRIL 2008 logic symbol† 1 19 1OE EN 2OE EN 2 18 11 9 1A1 1Y1 2A1 2Y1 4 16 13 7 1A2 1Y2 2A2 2Y2 6 14 15 5 1A3 1Y3 2A3 2Y3 8 12 17 3 1A4 1Y4 2A4 2Y4 †This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic diagram (positive logic) 1 19 1OE 2OE 2 18 11 9 1A1 1Y1 2A1 2Y1 4 16 13 7 1A2 1Y2 2A2 2Y2 6 14 15 5 1A3 1Y3 2A3 2Y3 8 12 17 3 1A4 1Y4 2A4 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V CC Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V I Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20 mA Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA Continuous current through V or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA CC Package thermal impedance, θ (see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W JA PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C stg †Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:4)(cid:4)(cid:9)(cid:10)(cid:11) (cid:12)(cid:7)(cid:13)(cid:5)(cid:14) (cid:15)(cid:16)(cid:17)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:19)(cid:22)(cid:23)(cid:18)(cid:19) (cid:24)(cid:22)(cid:13)(cid:6) (cid:25)(cid:9)(cid:1)(cid:13)(cid:5)(cid:13)(cid:18) (cid:12)(cid:16)(cid:13)(cid:26)(cid:16)(cid:13)(cid:1) SCLS526A − AUGUST 2003 − REVISED APRIL 2008 recommended operating conditions (see Note 3) MIN MAX UNIT VCC Supply voltage 2 5.5 V VCC = 2 V 1.5 VVIIHH HHiigghh--lleevveell iinnppuutt vvoollttaaggee VCC = 3 V 2.1 VV VCC = 5.5 V 3.85 VCC = 2 V 0.5 VVIILL LLooww--lleevveell iinnppuutt vvoollttaaggee VCC = 3 V 0.9 VV VCC = 5.5 V 1.65 VI Input voltage 0 5.5 V VO Output voltage 0 VCC V VCC = 2 V −50 (cid:1)A IIOOHH HHiigghh--lleevveell oouuttppuutt ccuurrrreenntt VCC = 3.3 V ± 0.3 V −4 mmAA VCC = 5 V ±0.5 V −8 VCC = 2 V 50 (cid:1)A IIOOLL LLooww--lleevveell oouuttppuutt ccuurrrreenntt VCC = 3.3 V ± 0.3 V 4 mmAA VCC = 5 V ±0.5 V 8 VCC = 3.3 V ± 0.3 V 100 ∆∆tt//∆∆vv IInnppuutt ttrraannssiittiioonn rriissee oorr ffaallll rraattee nnss//VV VCC = 5 V ±0.5 V 20 TA Operating free-air temperature −40 125 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) TA = 25°C PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS VVCCCC MMIINN MMAAXX UUNNIITT MIN TYP MAX 2 V 1.9 2 1.9 IIOOHH == −−5500 (cid:1)(cid:1)AA 3 V 2.9 3 2.9 VVOOHH 4.5 V 4.4 4.5 4.4 VV IOH = −4 mA 3 V 2.58 2.48 IOH = −8 mA 4.5 V 3.94 3.8 2 V 0.1 0.1 IIOOLL == 5500 (cid:1)(cid:1)AA 3 V 0.1 0.1 VVOOLL 4.5 V 0.1 0.1 VV IOL = 4 mA 3 V 0.36 0.5 IOL = 8 mA 4.5 V 0.36 0.5 II VI = 5.5 V or GND 0 V to 5.5 V ±0.1 ±1 (cid:1)A IOZ VO = VCC or GND, VI (OE) = VIL or VIH 5.5 V ±0.25 ±2.5 (cid:1)A ICC VI = VCC or GND, IO = 0 5.5 V 4 40 (cid:1)A Ci VI = VCC or GND 5 V 2 10 pF Co VO = VCC or GND 5 V 3.5 pF POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:4)(cid:4)(cid:9)(cid:10)(cid:11) (cid:12)(cid:7)(cid:13)(cid:5)(cid:14) (cid:15)(cid:16)(cid:17)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:19)(cid:22)(cid:23)(cid:18)(cid:19) (cid:24)(cid:22)(cid:13)(cid:6) (cid:25)(cid:9)(cid:1)(cid:13)(cid:5)(cid:13)(cid:18) (cid:12)(cid:16)(cid:13)(cid:26)(cid:16)(cid:13)(cid:1) SCLS526A − AUGUST 2003 − REVISED APRIL 2008 switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V±0.3 V (unless otherwise noted) (see Figure 1) FFRROOMM TTOO LLOOAADD TA = 25°C PPAARRAAMMEETTEERR MMIINN MMAAXX UUNNIITT (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX tPLH 5.8 8.4 1 10 AA YY CCLL == 1155 ppFF nnss tPHL 5.8 8.4 1 10 tPZH 6.6 10.6 1 12.5 OOEE YY CCLL == 1155 ppFF nnss tPZL 6.6 10.6 1 12.5 tPHZ 5 9.7 1 11 OOEE YY CCLL == 1155 ppFF nnss tPLZ 5 9.7 1 11 tPLH 8.3 11.9 1 13.5 AA YY CCLL == 5500 ppFF nnss tPHL 8.3 11.9 1 13.5 tPZH 9.1 14.1 1 16 OOEE YY CCLL == 5500 ppFF nnss tPZL 9.1 14.1 1 16 tPHZ 10.3 14 1 16 OOEE YY CCLL == 5500 ppFF nnss tPLZ 10.3 14 1 16 switching characteristics over recommended operating free-air temperature range, VCC = 5 V±0.5 V (unless otherwise noted) (see Figure 1) FFRROOMM TTOO LLOOAADD TA = 25°C PPAARRAAMMEETTEERR MMIINN MMAAXX UUNNIITT (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX tPLH 3.9 5.5 1 6.5 AA YY CCLL == 1155 ppFF nnss tPHL 3.9 5.5 1 6.5 tPZH 4.7 7.3 1 8.5 OOEE YY CCLL == 1155 ppFF nnss tPZL 4.7 7.3 1 8.5 tPHZ 5 7.2 1 8.5 OOEE YY CCLL == 1155 ppFF nnss tPLZ 5 7.2 1 8.5 tPLH 5.4 7.5 1 8.5 AA YY CCLL == 5500 ppFF nnss tPHL 5.4 7.5 1 8.5 tPZH 6.2 9.3 1 10.5 OOEE YY CCLL == 5500 ppFF nnss tPZL 6.2 9.3 1 10.5 tPHZ 6.7 9.2 1 10.5 OOEE YY CCLL == 5500 ppFF nnss tPLZ 6.7 9.2 1 10.5 noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4) PARAMETER MIN TYP MAX UNIT VOL(P) Quiet output, maximum dynamic VOL 0.5 V VOL(V) Quiet output, minimum dynamic VOL −0.2 V VOH(V) Quiet output, minimum dynamic VOH 4.8 V VIH(D) High-level dynamic input voltage 3.5 V VIL(D) Low-level dynamic input voltage 1.5 V NOTE 4: Characteristics are for surface-mount packages only. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:4)(cid:4)(cid:9)(cid:10)(cid:11) (cid:12)(cid:7)(cid:13)(cid:5)(cid:14) (cid:15)(cid:16)(cid:17)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:19)(cid:22)(cid:23)(cid:18)(cid:19) (cid:24)(cid:22)(cid:13)(cid:6) (cid:25)(cid:9)(cid:1)(cid:13)(cid:5)(cid:13)(cid:18) (cid:12)(cid:16)(cid:13)(cid:26)(cid:16)(cid:13)(cid:1) SCLS526A − AUGUST 2003 − REVISED APRIL 2008 operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load, f = 1 MHz 8.6 pF POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:4)(cid:4)(cid:9)(cid:10)(cid:11) (cid:12)(cid:7)(cid:13)(cid:5)(cid:14) (cid:15)(cid:16)(cid:17)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:19)(cid:22)(cid:23)(cid:18)(cid:19) (cid:24)(cid:22)(cid:13)(cid:6) (cid:25)(cid:9)(cid:1)(cid:13)(cid:5)(cid:13)(cid:18) (cid:12)(cid:16)(cid:13)(cid:26)(cid:16)(cid:13)(cid:1) SCLS526A − AUGUST 2003 − REVISED APRIL 2008 PARAMETER MEASUREMENT INFORMATION VCC From Output Test From Output RL = 1 kΩ S1 Open TEST S1 Under Test Point Under Test GND tPLH/tPHL Open CL CL tPLZ/tPZL VCC (see Note A) (see Note A) tPHZ/tPZH GND Open Drain VCC LOAD CIRCUIT FOR LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS 3-STATE AND OPEN-DRAIN OUTPUTS VCC Timing Input 50% VCC tw th 0 V VCC tsu VCC Input 50% VCC 50% VCC Data Input 50% VCC 50% VCC 0 V 0 V VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS PULSE DURATION SETUP AND HOLD TIMES VCC VCC Output Input 50% VCC 50% VCC Control 50% VCC 50% VCC 0 V 0 V tPLH tPHL tPZL tPLZ Output VOH Waveform 1 ≈VCC InO-Puhtapsuet 50% VCC 50% VCC S1 at VCC 50% VCC VOL + 0.3 V VOL (see Note B) VOL tPHL tPLH tPZH tPHZ Output Out-ofO-Puhtapsuet 50% VCC 50% VCVVCOOHL (WseSae1v eNaftoo GtremN B D2) 50% VCC VOH − 0.3 VV≈0O VH VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES ENABLE AND DISABLE TIMES INVERTING AND NONINVERTING OUTPUTS LOW- AND HIGH-LEVEL ENABLING NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤3 ns, tf ≤ 3 ns. D. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Top-Side Markings Samples (1) Drawing Qty (2) (3) (4) SN74AHC244QDWRQ1 ACTIVE SOIC DW 20 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 AHC244Q1 & no Sb/Br) SN74AHC244QPWRG4Q1 ACTIVE TSSOP PW 20 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 AHC244Q1 & no Sb/Br) SN74AHC244QPWRQ1 ACTIVE TSSOP PW 20 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 AHC244Q1 & no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 OTHER QUALIFIED VERSIONS OF SN74AHC244-Q1 : •Catalog: SN74AHC244 •Enhanced Product: SN74AHC244-EP •Military: SN54AHC244 NOTE: Qualified Version Definitions: •Catalog - TI's standard catalog product •Enhanced Product - Supports Defense, Aerospace and Medical Applications •Military - QML certified for Military and Defense Applications Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) SN74AHC244QDWRQ1 SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 SN74AHC244QPWRG4Q TSSOP PW 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.0 Q1 1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) SN74AHC244QDWRQ1 SOIC DW 20 2000 367.0 367.0 45.0 SN74AHC244QPWRG4Q1 TSSOP PW 20 2000 367.0 367.0 38.0 PackMaterials-Page2

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PACKAGE OUTLINE DW0020A SOIC - 2.65 mm max height SCALE 1.200 SOIC C 10.63 SEATING PLANE TYP 9.97 A PIN 1 ID 0.1 C AREA 18X 1.27 20 1 13.0 2X 12.6 11.43 NOTE 3 10 11 0.51 20X 7.6 0.31 2.65 MAX B 7.4 0.25 C A B NOTE 4 0.33 TYP 0.10 0.25 SEE DETAIL A GAGE PLANE 0.3 1.27 0 - 8 0.1 0.40 DETAIL A TYPICAL 4220724/A 05/2016 NOTES: 1. All linear dimensions are in millimeters. Dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. 4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.43 mm per side. 5. Reference JEDEC registration MS-013. www.ti.com

EXAMPLE BOARD LAYOUT DW0020A SOIC - 2.65 mm max height SOIC 20X (2) SYMM 1 20 20X (0.6) 18X (1.27) SYMM (R0.05) TYP 10 11 (9.3) LAND PATTERN EXAMPLE SCALE:6X SOOPLEDNEINRG MASK METAL MSOELTDAEL RU NMDAESRK SOOPLEDNEINRG MASK 0.07 MAX 0.07 MIN ALL AROUND ALL AROUND NON SOLDER MASK SOLDER MASK DEFINED DEFINED SOLDER MASK DETAILS 4220724/A 05/2016 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN DW0020A SOIC - 2.65 mm max height SOIC 20X (2) SYMM 1 20 20X (0.6) 18X (1.27) SYMM 10 11 (9.3) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE:6X 4220724/A 05/2016 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com

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