HD74LS191FPEL Ver la hoja de datos (PDF) - Renesas Electronics

Número de pieza

componentes Descripción

Lista de partido

HD74LS191FPEL

Synchronous Up / Down 4-bit Binary Counter (single clock line)

Renesas Electronics 

HD74LS191

Testing Method

Test Circuit

4.5V

P.G.

Zout = 50Ω

Input

VCC

Output

Ripple

Clock

Enable

Down/Up

Clock

Max/Min

A

B

QA

C

D

QB

Load

QC

Output

Output

Output

Output

Output

Load circuit 1

RL

CL

Same as Load Circuit 1.

Same as Load Circuit 1.

Same as Load Circuit 1.

Same as Load Circuit 1.

QD

Same as Load Circuit 1.

Notes: 1. CL includes probe and jig capacitance.

2. All diodes are 1S2074(H).

Waveforms 1

Data Input

tTLH

10%

90%

1.3V

tsu

tTHL

3V

90%

1.3V

10%

0V

tsu

Load Input

90%

1.3V

10%

3V

90%

1.3V

10%

0V

tTLH

Output

tTLH

VOH

VOL

Note: Input pulse: tTLH, tTHL ≤ 10 ns, PRR = 1 MHz, duty cycle ≤ 50%

Rev.2.00, Feb.18.2005, page 7 of 10

Share Link: