HD74LS283 Просмотр технического описания (PDF) - Renesas Electronics

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HD74LS283

4-bit Binary Full Adder

Renesas Electronics 

HD74LS283

Testing Method

Test Circuit

4.5V

P.G.

Zout = 50Ω

Input

VCC Output

RL Load circuit 1

C4

CL

A4

B4

Output

A3

Σ4

Same as Load Circuit 1.

B3

Output

A2

Σ3

Same as Load Circuit 1.

B2

Output

A1

Σ2

Same as Load Circuit 1.

B1

Output

C0

Σ1

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

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

Rev.3.00, Jul.15.2005, page 5 of 7

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