HD74LS157RPEL Ver la hoja de datos (PDF) - Renesas Electronics

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HD74LS157RPEL

Quadruple 2-line-to-1-line Data Selectors / Multiplexers (noninverted outputs)

Renesas Electronics 

HD74LS157

Testing Method

Test Circuit

4.5V

P.G.

Zout = 50Ω

Input

VCC Output

RL Load circuit 1

1A

1Y

1B

CL

2A

2B

Output

3A

3B

2Y

Same as Load Circuit 1.

4A

Output

4B

3Y

Same as Load Circuit 1.

G

Output

S

4Y

Same as Load Circuit 1.

Notes: 1. CL includes probe and jig capacitance.

2. All diodes are 1S2074(H).

Waveform

tTLH

tTHL

90%

90%

3V

Input

1.3 V

1.3 V

10%

10%

0V

tPLH

tPHL

In phase output

1.3 V

tPHL

1.3 V

tPLH

VOH

VOL

Out of phase output

1.3 V

VOH

1.3 V

VOL

Note: Input pulse; tTLH ≤ 15 ns, tTHL ≤ 6 ns, PRR = 1 MHz, duty cycle 50%.

Rev.2.00, Feb.18.2005, page 4 of 6

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