74AC163B STMicroelectronics, 74AC163B Datasheet - Page 6

• Manufacturer Part Number: 74AC163B
• Description: SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
• Manufacturer: STMicroelectronics

54AC16374, 74AC16374
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS123B – MARCH 1990 – REVISED APRIL 1996
6
Out-of-Phase
NOTES: A. C L includes probe and jig capacitance.
From Output
Input
Under Test
In-Phase
Output
(see Note A)
Output
Input
C L = 50 pF
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR
D. The outputs are measured one at a time with one input transition per measurement.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
50%
t PLH
t PHL
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
LOAD CIRCUIT
50%
t w
500
50% V CC
50% V CC
PARAMETER MEASUREMENT INFORMATION
500
Figure 1. Load Circuit and Voltage Waveforms
50%
50%
POST OFFICE BOX 655303
50% V CC
S1
50% V CC
t PHL
t PLH
V CC
0 V
V OH
V OL
V OH
V OL
V CC
0 V
GND
2
Open
V CC
S1 at 2
(see Note B)
(see Note B)
DALLAS, TEXAS 75265
Waveform 2
Waveform 1
S1 at GND
Timing Input
(low-level
enabling)
Data Input
Control
Output
Output
Output
V CC
t PZL
t PZH
t su
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
50%
t PLH /t PHL
t PHZ /t PZH
50%
t PLZ /t PZL
1 MHz, Z O = 50 , t r = 3 ns, t f = 3 ns.
TEST
50% V CC
50% V CC
t PLZ
t PHZ
50%
50%
50%
2
t h
Open
GND
20% V CC
80% V CC
S1
V CC
V CC
0 V
V CC
0 V
V CC
0 V
[
V OL
V OH
[
V CC
0 V