Texas Instruments CD54ACT138, CD74ACT138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS Datasheet Manual

查询CD54ACT138F3A供应商 CD54ACT138, CD74ACT138

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCHS329A – JANUARY 2003 – REVISED FEBRUARY 2003

Inputs Are TTL-Voltage Compatible CD54ACT138 F PACKAGE CD74ACT138 E OR M PACKAGE

Speed of Bipolar F, AS, and S, With

(TOP VIEW)

Significantly Reduced Power Consumption

Designed Specifically for High-Speed VCC

Memory Decoders and Data-Transmission Y0 Systems Y1

Incorporate Three Enable Inputs to Simplify G2A Y2

Cascading and/or Data Reception G2B Y3 G1 Y4

Balanced Propagation Delays

±24-m A Output Drive Current

GND Y6

– Fanout to 15 F Devices SCR-Latchup-Resistant CMOS Process and Circuit Design Exceeds 2-k V ESD Protection Per MIL-STD-883, Method 3015

description/ordering information The ’ACT138 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. 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. An enable input can be used as a data input for demultiplexing applications (see Application Information).

ORDERING INFORMATION

ORDERABLE TOP-SIDE

TA PACKAGE†

PART NUMBER MARKING

PDIP – E Tube CD74ACT138E CD74ACT138E

Tube CD74ACT138M

55°C to 125°C SOIC ACT138M–

Tape and reel CD74ACT138M96

CDIP – F Tube CD54ACT138F3A CD54ACT138F3A

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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