CD74HCT157 High Speed CMOS Logic Quad 2-Input Multiplexers | TI.com

CD74HCT157 (ACTIVE) High Speed CMOS Logic Quad 2-Input Multiplexers

 

Description

The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select input (S). The Enable input (E\) is active Low. When (E\) is High, all of the outputs in the 158, the inverting type, (1Y\-4Y\) are forced High and in the 157, the non-inverting type, all of the outputs (1Y\-4Y\) are forced Low, regardless of all other input conditions.

Moving data from two groups of registers to four common output busses is a common use of these devices. The state of the Select input determines the particular register from which the data comes. They can also be used as function generators.

Features

  • Common Select Inputs
  • Separate Enable Inputs
  • Buffered inputs and Outputs
  • Fanout (Over Temperature Range)
    • Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
    • Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
  • Wide Operating Temperature Range . . . -55°C to 125°C
  • Balanced Propagation Delay and Transition Times
  • Significant Power Reduction Compared to LSTTL Logic ICs
  • HC Types
    • 2V to 6V Operation
    • High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V
  • HCT Types
    • 4.5V to 5.5V Operation
    • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
    • CMOS Input Compatibility, Il 1µA at VOL, VOH

The CD54HC158 and CD74HC158 are obsolete and no longer are supplied.

Parametrics

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Part number Order Function Technology Family VCC (Min) (V) VCC (Max) (V) Channels (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) Configuration Type IOL (Max) (mA) IOH (Max) (mA) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Bits (#) Digital input leakage (Max) (uA) ESD CDM (kV) ESD HBM (kV)
CD74HCT157 Order now Encoder
Multiplexer    
HCT     4.5     5.5     4     5     25     0.08     12     2:1     Standard     4     -4     Catalog     -55 to 125     PDIP | 16
SOIC | 16    
See datasheet (PDIP)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)    
2     5     0.75     2    
CD54HCT157 Samples not available Encoder/Multiplexer     HCT     4.5     5.5     4     5     25     0.08     12     2:1     Standard     4/-4       Military     -55 to 125     CDIP | 16     See datasheet (CDIP)     2     5     0.75     2