Texas Instruments SN54AHC138, SN74AHC138 Data Handbook

SN54AHC138, SN74AHC138

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCLS258L – DECEMBER 1995 – REVISED JULY 2003

Operating Range 2-V to 5.5-V VCC Latch-Up Performance Exceeds 250 m A Per

JESD 17

Designed Specifically for High-Speed Memory Decoders and Data-Transmission ESD Protection Exceeds JESD 22 Systems – 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

Incorporate Three Enable Inputs to Simplify

– 1000-V Charged-Device Model (C101)

Cascading and/or Data Reception SN54AHC138 J OR W PACKAGE SN74AHC138 RGY PACKAGE

SN54AHC138 FK PACKAGE

SN74AHC138 D, DB, DGV, N, NS, (TOP VIEW)

(TOP VIEW)

OR PW PACKAGE (TOP VIEW)

Y0 Y0 Y1 Y1 Y1 G2A Y2 G2A Y2 G2A Y2 NC NC G2B Y3 G2B Y3 G2B Y3

GND Y6

NC – No internal connection

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

ORDERABLE TOP-SIDE

TA PACKAGE†

PART NUMBER MARKING

QFN – RGY Tape and reel SN74AHC138RGYR HA138 PDIP – N Tube SN74AHC138N SN74AHC138N

Tube SN74AHC138D

SOIC AHC138

Tape and reel SN74AHC138DR

–40°C to 85°C SOP – NS Tape and reel SN74AHC138NSR AHC138

SSOP – DB Tape and reel SN74AHC138DBR HA138

Tube SN74AHC138PW

TSSOP PW HA138 –

Tape and reel SN74AHC138PWR

TVSOP – DGV Tape and reel SN74AHC138DGVR HA138 CDIP – J Tube SNJ54AHC138J SNJ54AHC138J

–55°C to 125°C CFP – W Tube SNJ54AHC138W SNJ54AHC138W

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.

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.

Copyright  2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments On products compliant to MIL-PRF-38535, all parameters are tested standard warranty. Production processing does not necessarily include unless otherwise noted. On all other products, production testing of all parameters. processing does not necessarily include testing of all parameters.

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