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Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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CD54HC257F3A Features
• Buffered Inputs • Typical Propagation Delay ( In to Output ) = 12ns atVCC = 5V, CL = 15pF, TA = 25oC • Fanout (Over Temperature Range)- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTLLogic ICs • HC Types- 2V to 6V Operation- High Noise Immunity: NIL = 30%, NIH = 30% of VCCat 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
CD54HC257F3A Description
The ’HC257 and ’HCT257 are quad 2-input multiplexerswhich select four bits of data from two sources under thecontrol of a common Select Input (S). The Output Enableinput (OE) is active LOW. When OE is HIGH, all of the out-puts (1Y-4Y) are in the high impedance state regardless ofall other input conditions.Moving data from two groups of registers to four commonoutput buses is a common use of the 257. The state of theSelect input determines the particular register from whichthe data comes. It can also be used as a function generator.
Product Attributes
TYPE | DESCRIPTION | Select all |
---|---|---|
Current - Output High, Low | 7.8mA, 7.8mA | |
Independent Circuits | 1 | |
Circuit | 4 x 2:1 | |
Type | Data Selector/Multiplexer | |
Product Status | Active | |
Package | Tube | |
Supplier Device Package | 16-CDIP | |
Series | 54HC | |
Package / Case | 16-CDIP (0.300", 7.62mm) | |
Mounting Type | Through Hole | |
Operating Temperature | -55°C ~ 125°C | |
Supply Voltage | 2V ~ 6V | |
Voltage Supply Source | Single Supply |
Active
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.