HD74HC190 Datasheet, PDF (2/13 Pages) Hitachi Semiconductor – Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line)

HD74HC190/HD74HC191
Features
• High Speed Operation: t_pd (Clock to Q) = 22 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 4 µA max (Ta = 25°C)
Pin Arrangement
Inputs Data B 1
Outputs
QB 2
QA 3
Inputs
Enable G 4
Down/Up 5
Outputs
QC 6
QD 7
GND 8
QB ^B A
QA
CK
G
Ripple
Clock
Dn/Up Max/Min
QC ^Load
QD _D C
(Top view)
16 V_CC
15 Data A
14 Clock
Inputs
13
Ripple
Clock
12 Max/Min
Outputs
11 Load
10 Data C _Inputs
9 Data D
2