74HC191 Datasheet, PDF (10/14 Pages) NXP Semiconductors – Presettable synchronous 4-bit binary up/down counter

Philips Semiconductors
Presettable synchronous 4-bit binary
up/down counter
Product specification
74HC/HCT191
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
D_n
CP
U/D
CE, PL
UNIT LOAD COEFFICIENT
0.5
0.65
1.15
1.5
December 1990
10