Nexperia
74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
t
W
V
I
90 %
negative
pulse
V
V
V
M
M
10 %
0 V
t
t
r
f
t
t
f
r
V
I
90 %
positive
pulse
V
M
M
10 %
0 V
t
W
V
V
CC
CC
V
I
V
O
R
L
S1
G
open
DUT
R
T
C
L
001aad983
Measurement points are given in Table 8 and test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator;
CL = Load capacitance including jig and probe capacitance;
RL = Load resistor.
Fig. 6. Test circuit for measuring switching times
Table 9. Test data
Type
Input
VI
Load
CL
Switch position
tr, tf
6 ns
6 ns
RL
tPHL, tPLH
open
tPZH, tPHZ
tPZL, tPLZ
VCC
74HC253
VCC
3 V
50 pF
50 pF
1 kΩ
1 kΩ
GND
GND
74HCT253
open
VCC
©
74HC_HCT253
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2022. All rights reserved
Product data sheet
Rev. 9 — 20 October 2022
10 / 16
NEXPERIA [ Nexperia ]
