m54hc191 STMicroelectronics, m54hc191 Datasheet - Page 7

• Manufacturer Part Number: m54hc191
• Description: 4 Bit Synchronous Up/down Counters
• Manufacturer: STMicroelectronics

CAPACITIVE CHARACTERISTICS
1) C
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
TEST CIRCUIT
C
R
Symbol
Symbol
L
T
= 50pF or equivalent (includes jig and probe capacitance)
= Z
t
C
C
PD
REM
PD
IN
OUT
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
of pulse generator (typically 50 )
Minimum Removal
Time (CLEAR)
Input Capacitance
Power Dissipation
Capacitance (note
1)
Parameter
Parameter
V
V
(V)
2.0
4.5
6.0
(V)
5.0
5.0
CC
CC
Test Condition
Test Condition
Min.
Min.
T
T
A
A
Typ.
Typ.
= 25°C
= 25°C
112
12
3
3
5
Max.
Max.
50
10
10
9
Value
Value
Min.
Min.
-40 to 85°C
-40 to 85°C
CC(opr)
= C
Max.
Max.
60
12
10
11
PD
x V
-55 to 125°C
-55 to 125°C
Min.
Min.
CC
x f
IN
M54HC191
Max.
Max.
+ I
65
15
13
10
CC
Unit
Unit
pF
pF
ns
7/13