Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Demultiplexer, decoder Decoder/demultiplexer Single supply TSSOP 16

SN54AHC138, SN74AHC138

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCLS258L − DECEMBER 1995 − REVISED JULY 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Operating Range 2-V to 5.5-V V

D Designed Specifically for High-Speed

Memory Decoders and Data-Transmission

Systems

D Incorporate Three Enable Inputs to Simplify

Cascading and/or Data Reception

D Latch-Up Performance Exceeds 250 mA Per

JESD 17

D ESD Protection Exceeds JESD 22

− 2000-V Human-Body Model (A114-A)

− 200-V Machine Model (A115-A)

− 1000-V Charged-Device Model (C101)

3212019

910111213

GND

SN54AHC138 ...FK PACKAGE

(TOP VIEW)

NC − No internal connection

GND

SN54AHC138 ...J OR W PACKAGE

SN74AHC138 ...D, DB, DGV, N, NS,

OR PW PACKAGE

(TOP VIEW)

SN74AHC138 . . . RGY PACKAGE

(TOP VIEW)

116

GND

description/ordering information

The ’AHC138 decoders/demultiplexers are designed for high-performance memory-decoding and data-routing

applications that require very short propagation-delay times. In high-performance memory systems, these

decoders can be used to minimize the effects of system decoding. When employed with high-speed memories

utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are

less than the typical access time of the memory. This means that the effective system delay introduced by the

decoders is negligible.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

QFN − RGY Tape and reel SN74AHC138RGYR HA138

PDIP − N Tube SN74AHC138N SN74AHC138N

SOIC D

Tube SN74AHC138D

AHC138

SOIC − D

Tape and reel SN74AHC138DR

AHC138

−40°C to 85°C

SOP − NS Tape and reel SN74AHC138NSR AHC138

SSOP − DB Tape and reel SN74AHC138DBR HA138

TSSOP PW

Tube SN74AHC138PW

HA138

TSSOP − PW

Tape and reel SN74AHC138PWR

HA138

TVSOP − DGV Tape and reel SN74AHC138DGVR HA138

CDIP − J Tube SNJ54AHC138J SNJ54AHC138J

−55°C to 125°C

CFP − W Tube SNJ54AHC138W SNJ54AHC138W

55 C

125 C

LCCC − FK Tube SNJ54AHC138FK SNJ54AHC138FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Summary of content (28 pages)

PAGE 1
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 D Operating Range 2-V to 5.5-V VCC D Designed Specifically for High-Speed D Memory Decoders and Data-Transmission Systems Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception SN54AHC138 . . . J OR W PACKAGE SN74AHC138 . . .
PAGE 2
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 description/ordering information (continued) The conditions at the binary-select inputs and the three enable inputs select one of eight output lines. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only one inverter.
PAGE 3
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.
PAGE 4
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS TA = 25°C VCC SN54AHC138 TYP 2V 1.9 2 1.9 1.9 3V 2.9 3 2.9 2.9 4.5 V 4.4 4.5 4.4 4.4 IOH = −4 mA 3V 2.58 2.48 2.48 IOH = −8 mA 4.5 V 3.94 IOH = −50 50 mA VOH IOL = 50 mA VOL IOL = 4 mA IOL = 8 mA II VI = 5.
PAGE 5
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.
PAGE 6
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 PARAMETER MEASUREMENT INFORMATION VCC From Output Under Test RL = 1 kΩ From Output Under Test Test Point S1 Open TEST GND CL (see Note A) CL (see Note A) S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open Drain Open VCC GND VCC LOAD CIRCUIT FOR 3-STATE AND OPEN-DRAIN OUTPUTS LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS VCC 50% VCC Timing Input tw tsu VCC 50% VCC 50% VCC Input 0V th VCC 50% VCC Data
PAGE 7
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 APPLICATION INFORMATION SN74AHC138 BIN/OCT 1 2 3 VCC 0 1 1 2 2 4 6 3 & 4 4 EN 5 5 6 7 15 14 13 12 11 10 9 7 0 1 2 3 4 5 6 7 SN74AHC138 BIN/OCT 1 A0 2 A1 3 A2 1 2 2 4 6 A3 0 1 3 & 4 4 A4 EN 5 5 6 7 15 14 13 12 11 10 9 7 8 9 10 11 12 13 14 15 SN74AHC138 BIN/OCT 1 2 3 6 0 1 1 2 2 4 3 & 4 4 5 EN 5 6 7 15 14 13 12 11 10 9 7 16 17 18 19 20 21 22 23 Figure 2
PAGE 8
SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258L − DECEMBER 1995 − REVISED JULY 2003 APPLICATION INFORMATION SN74AHC138 BIN/OCT 1 A0 2 A1 3 A2 1 1 2 2 4 6 VCC 0 3 & 4 4 A3 EN 5 A4 5 6 7 15 14 13 12 11 10 9 7 0 1 2 3 4 5 6 7 SN74AHC138 BIN/OCT 1 2 3 0 1 1 2 2 4 6 3 & 4 4 EN 5 5 6 7 15 14 13 12 11 10 9 7 8 9 10 11 12 13 14 15 SN74AHC138 BIN/OCT 1 2 3 0 1 1 2 2 4 6 3 & 4 4 EN 5 5 6 7 15 14 13 12 11 10 9 7 16 17 18 19 20 21 22 23 SN74AH
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 (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.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 6.6 2.5 12.0 16.0 Q1 SN74AHC138DBR SSOP DB 16 2000 330.0 16.4 8.2 SN74AHC138DGVR TVSOP DGV 16 2000 330.0 12.4 6.8 4.0 1.6 8.0 12.0 Q1 SN74AHC138DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74AHC138DBR SSOP DB 16 2000 367.0 367.0 38.0 SN74AHC138DGVR TVSOP DGV 16 2000 367.0 367.0 35.0 SN74AHC138DR SOIC D 16 2500 333.2 345.9 28.6 SN74AHC138PWR TSSOP PW 16 2000 367.0 367.0 35.0 SN74AHC138RGYR VQFN RGY 16 3000 367.0 367.0 35.
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MECHANICAL DATA MPDS006C – FEBRUARY 1996 – REVISED AUGUST 2000 DGV (R-PDSO-G**) PLASTIC SMALL-OUTLINE 24 PINS SHOWN 0,40 0,23 0,13 24 13 0,07 M 0,16 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 0°– 8° 1 0,75 0,50 12 A Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,08 14 16 20 24 38 48 56 A MAX 3,70 3,70 5,10 5,10 7,90 9,80 11,40 A MIN 3,50 3,50 4,90 4,90 7,70 9,60 11,20 DIM 4073251/E 08/00 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
PAGE 28
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.