74lcx157 STMicroelectronics, 74lcx157 Datasheet - Page 8

• Manufacturer Part Number: 74lcx157
• Description: Low Voltage Cmos Quad 2 Channel Multiplexer With 5v Tolerant Inputs
• Manufacturer: STMicroelectronics

Electrical characteristics
8/17
Table 7. AC electrical characteristics
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
2. Parameter guaranteed by design
Table 8. Capacitive characteristics
1. C
t
t
Symbol
Symbol
PLH
PLH
t
t
C
outputs of the same device switching in the same direction, either HIGH or LOW (t
t
operating current consumption without load. (Refer to Test Circuit). Average operating current can be
obtained by the following equation. I
OSLH
OSHL
C
OSHL
PD
PD
IN
t
t
PHL
PHL
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the
= | t
Input capacitance
Power dissipation
capacitance
Propagation delay
time A, B to Y
Propagation delay
time SELECT to Y
Output to output
skew time
PHLm
Parameter
- t
PHLn
Parameter
(1) (2)
|)
(1)
3.0 to 3.6
3.0 to 3.6
3.0 to 3.6
V
CC(opr)
2.7
2.7
(V)
CC
= C
V
(V)
3.3
3.3
CC
PD
Test condition
(pF)
Test condition
C
x V
50
50
50
L
CC
V
V
x f
f
IN
IN
IN
IN
= 0 or V
= 0 to V
= 10MHz
500
500
500
+ I
(Ω)
R
L
CC
/4
CC
CC
t
s
(ns)
2.5
2.5
2.5
= t
Min
r
OSLH
T
A
Min
-40 to 85 °C
1.5
1.5
Value
= 25 °C
Typ
25
6
= | t
Value
PLHm
Max
6.5
6.0
8.0
7.0
1.0
Max
74LCX157
- t
PLHn
Unit
Unit
|,
ns
ns
ns
pF
pF