HD74LS193 Datasheet, PDF (3/12 Pages) Hitachi Semiconductor – Synchronous Up/Down 4-bit Binary Counters(dual clock lines)

HD74LS193
Block Diagram
Data
Input A
Down Count
Up Count
Borrow
Output
Carry
Output
QA
Output QA
T
QA
Data
Input B
QB
Output QB
T
QB
Data
Input C
QC
Output QC
T
QC
Data
Input D
Clear
QD
T
QD
Load
Absolute Maximum Ratings
Item
Symbol
Ratings
Supply voltage
V_CC
7
Input voltage
V_IN
7
Power dissipation
P_T
400
Storage temperature
Tstg
–65 to +150
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Output QD
Unit
V
V
mW
°C
Rev.2.00, Feb.18.2005, page 3 of 11