74lvc163bq NXP Semiconductors, 74lvc163bq Datasheet - Page 15

• Manufacturer Part Number: 74lvc163bq
• Description: Presettable Synchronous 4-bit Binary Counter; Synchronous Reset
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2004 May 05
handbook, full pagewidth
Presettable synchronous 4-bit binary
counter; synchronous reset
The shaded areas indicate when the input is permitted to change for predictable output performance.
Note
1. The circuit performs better when R
Definitions for test circuits:
R
C
R
1.2 V
2.7 V
3.0 V to 3.6 V
L
L
T
= Load resistor.
= Load capacitance including jig and probe capacitance.
= Termination resistance should be equal to the output impedance Z
V
CC
V
2.7 V
2.7 V
CEP, CET input
CC
V
CP input
I
50 pF
50 pF
50 pF
GND
GND
GENERATOR
Fig.13 CEP and CET set-up and hold times.
V I
V I
PULSE
C
Fig.14 Load circuitry for switching times.
L
L
= 1000 .
500
500
500
V M
t su
V
R
I
L
(1)
V M
t h
R
T
o
15
of the pulse generator.
open
open
open
t
D.U.T.
PLH
V
CC
/t
PHL
V
O
GND
GND
GND
t
PZH
V
EXT
/t
C
PHZ
V M
L
t su
V
mna616
EXT
2
2
2
t
PZL
R
R
V M
L
L
t h
V
V
V
/t
CC
CC
CC
PLZ
MGU766
Product specification
74LVC163