Product Summary
The TC74HC157AF is a high speed CMOS 2-CHANNEL MULTIPLEXER fabricated with silicon gate C2MOS technology. The TC74HC157AF achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The TC74HC157AF is an inverting multiplexer while the TC74HC157A is a non-inverting. The SELECT decoding determines whether the A or B inputs get transferred to their corresponding Y ( Y ) outputs.
Parametrics
TC74HC157AF absolute maximum ratings: (1)Supply voltage range VCC: -0.5 to 7 V; (2)DC input voltage VIN: -0.5 to VCC + 0.5 V; (3)DC output voltage VOUT: -0.5 to VCC + 0.5 V; (4)Input diode current IIK: ±20 mA; (5)Output diode current IOK: ±20 mA; (6)DC output current IOUT: ±25 mA; (7)DC VCC/ground current ICC ±50 mA; (8)Power dissipation PD: 500 (DIP)(Note 2)/180 (SOP)mW; (9)Storage temperature Tstg: -65 to 150 °C.
Features
TC74HC157AF features: (1)High speed: tpd = 10 ns (typ.)at VCC = 5 V; (2)Low power dissipation: ICC = 4 μA (max)at Ta = 25°C; (3)High noise immunity: VNIH = VNIL = 28% VCC (min); (4)Output drive capability: 10 LSTTL loads; (5)Symmetrical output impedance: |IOH| = IOL = 4 mA (min); (6)Balanced propagation delays: tpLH −∼ tpHL; (7)Wide operating voltage range: VCC (opr)= 2 to 6 V; (8)Pin and function compatible with 74LS157/158.
Diagrams

| Image | Part No | Mfg | Description | ![]() |
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![]() TC74HC157AFN(F,M) |
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![]() IC MULTIPLEXER QUAD 2-CH 16-SOL |
![]() Data Sheet |
![]() Negotiable |
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![]() TC74HC157AFN(M) |
![]() Toshiba |
![]() IC MULTIPLEXER QUAD 2-CH 16-SOL |
![]() Data Sheet |
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(China (Mainland))










