Datasheet

SN54AHCT123A, SN74AHCT123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
SCLS420G – JUNE 1998 – REVISED APRIL 2003
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
NOTES: A. C
L
includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: Z
O
= 50 Ω, t
r
3 ns, t
f
3 ns.
C. The outputs are measured one at a time with one input transition per measurement.
50% V
CC
t
PLH
t
PHL
V
OH
V
OL
3 V
50% V
CC
1.5 V
3 V
Input A
(see Note B)
1.5 V
0 V
0 V
In-Phase
Output
Out-of-Phase
Output
VOLTAGE WAVEFORMS
DELAY TIMES
Input B
(see Note B)
V
OL
V
OH
LOAD CIRCUIT
Test
Point
C
L
(see Note A)
From Output
Under Test
50% V
CC
t
PLH
t
PHL
t
PHL
t
PLH
V
OH
V
OH
V
OL
V
OL
3 V
0 V
50% V
CC
Input CLR
(see Note B)
Out-of-Phase
Output
In-Phase
Output
VOLTAGE WAVEFORMS
DELAY TIMES
50% V
CC
50% V
CC
1.5 V 1.5 V
3 V
0 V
t
w
VOLTAGE WAVEFORMS
PULSE DURATION
Inputs
1.5 V1.5 V
V
OH
Outputs
50% V
CC
50% V
CC
V
OL
Figure 1. Load Circuit and Voltage Waveforms