CD74HCT157

Name: CD74HCT157
Brand: TI
SKU: CD74HCT157
Price: 0.231 USD

ACTIVE

High Speed CMOS Logic Quad 2-Input Multiplexers

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Data sheet

document-pdfAcrobat CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158 datasheet (Rev. C)

CD74HCT157

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Data sheet

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Product details

Technology family

HCT

Function

Digital Multiplexer

Configuration

2:1

Number of channels

4

Operating temperature range (°C)

-55 to 125

Rating

Catalog

Technology family

HCT

Function

Digital Multiplexer

Configuration

2:1

Number of channels

4

Operating temperature range (°C)

-55 to 125

Rating

Catalog

PDIP (N)

16

181.42 mm² 19.3 x 9.4

SOIC (D)

16

59.4 mm² 9.9 x 6

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: N_IL = 30%, N_IH = 30%of V_CC at V_CC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, V_IL = 0.8V (Max), V_IH = 2V (Min)
- CMOS Input Compatibility, I_l 1µA at V_OL, V_OH

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

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: N_IL = 30%, N_IH = 30%of V_CC at V_CC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, V_IL = 0.8V (Max), V_IH = 2V (Min)
- CMOS Input Compatibility, I_l 1µA at V_OL, V_OH

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

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.

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.

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