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74HCT257 Series

High Speed CMOS Logic Quad 2-Input Multiplexers with Non-Inverting 3-State Outputs

Manufacturer: Texas Instruments

Catalog(5 parts)

PartSupplier Device PackageVoltage Supply SourceMounting TypeCurrent - Output High, Low▲▼Current - Output High, Low▲▼Voltage - Supply▲▼Voltage - Supply▲▼TypeCircuit▲▼CircuitOperating Temperature▲▼Operating Temperature▲▼Package / CasePackage / Case▲▼Independent Circuits▲▼
Texas Instruments
CD74HCT257M96
Multiplexer 4 x 2:1 16-SOIC
16-SOIC
Single Supply
Surface Mount
0.006000000052154064 A
0.006000000052154064 A
5.5 V
4.5 V
Multiplexer
4 ul
2:1
-55 °C
125 °C
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
1 ul
Texas Instruments
SN74HCT257D
Multiplexer 4 x 2:1 16-SOIC
16-SOIC
Single Supply
Surface Mount
0.006000000052154064 A
0.006000000052154064 A
5.5 V
4.5 V
Multiplexer
4 ul
2:1
-40 °C
85 °C
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
1 ul
Texas Instruments
SN74HCT257DR
Multiplexer 4 x 2:1 16-SOIC
16-SOIC
Single Supply
Surface Mount
0.006000000052154064 A
0.006000000052154064 A
5.5 V
4.5 V
Multiplexer
4 ul
2:1
-40 °C
85 °C
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
1 ul
Texas Instruments
SN74HCT257DRE4
Multiplexer 4 x 2:1 16-SOIC
16-SOIC
Single Supply
Surface Mount
0.006000000052154064 A
0.006000000052154064 A
5.5 V
4.5 V
Multiplexer
4 ul
2:1
-40 °C
85 °C
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
1 ul
Texas Instruments
SN74HCT257DT
Multiplexer 4 x 2:1 16-SOIC
16-SOIC
Single Supply
Surface Mount
0.006000000052154064 A
0.006000000052154064 A
5.5 V
4.5 V
Multiplexer
4 ul
2:1
-40 °C
85 °C
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
1 ul

Key Features

• Buffered InputsTypical Propagation Delay (In to Output) = 12ns at VCC= 5V, CL= 15pF, TA= 25°CFanout (Over Temperature Range)Standard Outputs...10 LSTTL LoadsBus Driver Outputs...15 LSTTL LoadsWide Operating Temperature Range...–55°C to 125°CBalanced Propagation Delay and Transition TimesSignificant Power Reduction Compared to LSTTL Logic ICsHC Types2V to 6V OperationHigh Noise Immunity: NIL= 30%, NIH= 30% of VCCat VCC= 5VHCT Types4.5V to 5.5V OperationDirect LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH= 2V (Min)CMOS Input Compatibility, Il1µA at VOL, VOHData sheet acquired from Harris SemiconductorBuffered InputsTypical Propagation Delay (In to Output) = 12ns at VCC= 5V, CL= 15pF, TA= 25°CFanout (Over Temperature Range)Standard Outputs...10 LSTTL LoadsBus Driver Outputs...15 LSTTL LoadsWide Operating Temperature Range...–55°C to 125°CBalanced Propagation Delay and Transition TimesSignificant Power Reduction Compared to LSTTL Logic ICsHC Types2V to 6V OperationHigh Noise Immunity: NIL= 30%, NIH= 30% of VCCat VCC= 5VHCT Types4.5V to 5.5V OperationDirect LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH= 2V (Min)CMOS Input Compatibility, Il1µA at VOL, VOHData sheet acquired from Harris Semiconductor

Description

AI
The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions. Moving data from two groups of registers to four common output buses is a common use of the 257. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator. The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions. Moving data from two groups of registers to four common output buses is a common use of the 257. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator.