Philips Semiconductors
Product specification
8-input multiplexer
FEATURES
•
True and complement outputs
•
Multifunction capability
•
Permits multiplexing from n lines to 1 line
•
Non-inverting data path
•
See the “251” for the 3-state version
•
Output capability: standard
•
I
CC
category: MSI
GENERAL DESCRIPTION
74HC/HCT151
The 74HC/HCT151 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL).
They are specified in compliance with JEDEC standard no. 7A.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°C;
t
r
= t
f
= 6 ns
TYPICAL
SYMBOL
t
PHL
/ t
PLH
PARAMETER
propagation delay
I
n
to Y, Y
S
n
to Y, Y
E to Y
E to Y
C
I
C
PD
Notes
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µW):
P
D
= C
PD
×
V
CC2
×
f
i
+ ∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
2. For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
−
1.5 V
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
input capacitance
power dissipation capacitance per package
notes 1 and 2
CONDITIONS
HC
C
L
= 15 pF; V
CC
= 5 V
17
19
12
14
3.5
40
19
20
13
18
3.5
40
ns
ns
ns
ns
pF
pF
HCT
UNIT
December 1990
2