Texas Instruments CD54 74HC157, 74HCT157, 74HC158, 74HCT158 Data Sheet Manual

CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158

Data sheet acquired from Harris Semiconductor SCHS153A

High Speed CMOS Logic Quad 2-Input Multiplexers

September 1997 - Revised May 2000

Features Description Common Select Inputs The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2-

input multiplexers which select four bits of data from two

[ /Title Separate Enable Inputs

sources under the control of common Select input (S). The (CD74H Buffered inputs and Outputs Enable input (E) is active Low. When (E) is High, all of the outputs in the 158, the inverting type, (1Y-4Y) are forced

Fanout (Over Temperature Range)

High and in the 157, the non-inverting type, all of the outputs

CD74H

Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads (1Y-4Y) are forced Low, regardless of all other input

CT157, Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads conditions. CD74H

Wide Operating Temperature Range . . . -55o C to 125o C Moving data from two groups of registers to four common

C158, output busses is common use of these devices. The state

Balanced Propagation Delay and Transition Times

CD74H of the Select input determines the particular register from Significant Power Reduction Compared to LSTTL which the data comes. They can also be used as function

CT158)

Logic ICs generators.

/Subject

HC Types

(High Ordering Information

2V to 6V Operation

Speed

High Noise Immunity: NIL 30%, NIH 30%of VCC at TEMP. RANGE

VCC = 5V PART NUMBER (o C) PACKAGE

HCT Types CD54HC157F -55 to 125 16 Ld CERDIP 4.5V to 5.5V Operation

CD54HC157F3A -55 to 125 16 Ld CERDIP

Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min) CD74HC157E -55 to 125 16 Ld PDIP

CMOS Input Compatibility, Il 1µA at VOL, VOH

CD74HC157M -55 to 125 16 Ld SOIC

CD54HCT157F3A -55 to 125 16 Ld CERDIP

Pinout

CD74HCT157E -55 to 125 16 Ld PDIP

CD54HC157, CD54HCT157, CD54HC158, CD54HCT158

CD74HCT157M -55 to 125 16 Ld SOIC

(CERDIP)

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

CD54HC158F3A -55 to 125 16 Ld CERDIP

(PDIP, SOIC) TOP VIEW CD74HC158E -55 to 125 16 Ld PDIP

VCC CD74HC158M -55 to 125 16 Ld SOIC

CD54HCT158F3A -55 to 125 16 Ld CERDIP

CD74HCT158E -55 to 125 16 Ld PDIP

NOTES:

1. When ordering, use the entire part number. Add the suffix to

obtain the variant in the tape and reel.

2. Wafer or die for this part number is available which meets all elec-

GND 3Y trical specifications. Please contact your local TI sales office or

customer service for ordering information.

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © 2000, Texas Instruments Incorporated