74AC163 STMicroelectronics, 74AC163 Datasheet - Page 7

• Manufacturer Part Number: 74AC163
• Description: SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
• 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
R
WAVEFORM 1: PROPAGATION DELAYS, COUNT MODE (f=1MHz; 50% duty cycle)
Symbol
L
L
T
= 50pF or equivalent (includes jig and probe capacitance)
= R
= Z
C
PD
C
PD
IN
OUT
1
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
= 500 or equivalent
of pulse generator (typically 50 )
Input Capacitance
Power Dissipation
Capacitance
(note1)
Parameter
V
(V)
5.0
5.0
CC
Test Condition
f
IN
= 10MHz
Min.
T
A
Typ.
= 25°C
4.5
37
Max.
CC(opr)
Value
-40 to 85°C
Min.
= C
Max.
PD
x V
CC
-55 to 125°C
Min.
x f
IN
+ I
CC
Max.
74AC163
/n (per circuit)
Unit
pF
pF
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