HD74LS122P Просмотр технического описания (PDF) - Renesas Electronics

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HD74LS122P

Retriggerable Monostable Multivibrator (with Clear)

Renesas Electronics 

HD74LS122

Testing Method

Test Circuit

P.G.

Zout = 50Ω

A1 Input

4.5V

B1 Input

P.G.

Zout = 50Ω

CLR Input

P.G.

Zout = 50Ω

VCC Output Q

Cext Rext

Cext Rext VCC

/Cext

Q

RL Load circuit 1

CL

CLR

Output Q

Q

Same as Load Circuit 1.

Notes:

H2

1. CL includes probe and jig capacitance.

2. All diodes are 1S2074(H).

Waveform

tw (in)

≥ 40ns

3V

A

1.3V 1.3V

1.3V

tw (in)

≥ 40ns

B

0V

tw (in)

3V

≥ 40ns

1.3V 1.3V

1.3V

tw (in)

0V

≥ 40ns

tw (CLR)

≥ 40ns

3V

Clear

1.3V

1.3V

0V

tPLH

tPLH

VOH

Q

1.3V

1.3V

1.3V

1.3V

tPHL

tw (out)

VOL

tPLH

Q

1.3V

1.3V

tPHL

Note: Input pulse; tTLH ≤ 15 ns, tTHL ≤ 6 ns.

tw (out)

1.3V

tPHL

1.3V

VOH

VOL

Rev.2.00, Feb.18.2005, page 6 of 7

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