HD74LS247

Rev.3.00, Jul.15.2005, page 3 of 7

Block Diagram

RBI

Ripple Blanking

Input

BI/BRO

Blanking Input or

Ripple Blanking

Output

Lamp Test

Input

a

b

c

e

d

f

g

Outputs

Inputs

D

C

B

A

Absolute Maximum Ratings

Item

Symbol

Ratings

Unit

Supply voltage

7

V

Input voltage

7

V

≤ 1ms, duty cycle ≤ 10%)

200

mA

Output current (off-state)

1

mA

Operating temperature

Topr

–20 to +75

°C

Power dissipation

400

mW

Storage temperature

Tstg

–65 to +150

°C

Note:

Voltage value, unless otherwise noted, are with respect to network ground terminal.