HD74LS85 データシートの表示（PDF） - Renesas Electronics

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HD74LS85

4-bit Magnitude Comparator

Renesas Electronics 

HD74LS85

Testing Method

Test Circuit

4.5V

VCC Output

P.G.

Zout = 50Ω

Input

A3

RL Load circuit 1

B3

A>B

A2

B2

CL

A1

B1

Output

A0

B0

A=B

Same as Load Circuit 1.

Output

A<B

A<B

A=B

A>B

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

(A)

1.3 V

tPHL

1.3 V

tPLH

VOH

VOL

Out of phase output

(B)

1.3 V

1.3 V

VOH

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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