HD74LS190 Datasheet, PDF (3/11 Pages) Hitachi Semiconductor – Synchronous Up/Down Decade Counters(single clock line)

HD74LS190
Block Diagram
Clock
Down/Up
Data
Input A
Enable G
Data
Input B
Data
Input C
Data
Input D
Load
Preset
J QA
CK
K QA
Clear
Ripple
Clock
Max/Min
Output
Output QA
Preset
J QB
CK
K QB
Clear
Output QB
Preset
J QC
CK
K QC
Clear
Output QC
Preset
J QD
CK
K QD
Clear
Output QD
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage
V_CC
7
V
Input voltage
V_IN
7
V
Power dissipation
P_T
400
mW
Storage temperature
Tstg
–65 to +150
°C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Rev.3.00, Jul.15.2005, page 3 of 10