Page 1
DATA SH EET
Product specification
File under Integrated Circuits, IC06
December 1990
INTEGRATED CIRCUITS
74HC/HCT151
8-input multiplexer
For a complete data sheet, please also download:
•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
Page 2
December 1990 2
Philips Semiconductors Product specification
8-input multiplexer 74HC/HCT151
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
• ICC category: MSI
GENERAL DESCRIPTION
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; tr=tf= 6 ns
Notes
1. C
PD
is used to determine the dynamic power dissipation (PD in µW):
PD=CPD× V
CC
2
× fi+∑(CL× V
CC
2
× fo) where:
fi= input frequency in MHz
fo= output frequency in MHz
∑ (CL× V
CC
2
× fo) = sum of outputs
CL= output load capacitance in pF
VCC= supply voltage in V
2. For HC the condition is VI= GND to V
CC
For HCT the condition is VI= GND to VCC− 1.5 V
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL PARAMETER CONDITIONS
TYPICAL
UNIT
HC HCT
t
PHL
/ t
PLH
propagation delay CL= 15 pF; VCC=5 V
I
n
to Y, Y 1719ns
S
n
to Y, Y 1920ns
E to Y 1213ns
E to Y 1418ns
C
I
input capacitance 3.5 3.5 pF
C
PD
power dissipation capacitance per package notes 1 and 2 40 40 pF
Page 3
December 1990 3
Philips Semiconductors Product specification
8-input multiplexer 74HC/HCT151
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
4, 3, 2, 1, 15, 14, 13, 12 I
0
to I
7
multiplexer inputs
5 Y multiplexer output
6
Y complementary multiplexer output
7
E enable input (active LOW)
8 GND ground (0 V)
11, 10, 9 S
0
, S1, S2select inputs
16 V
CC
positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
Page 4
December 1990 4
Philips Semiconductors Product specification
8-input multiplexer 74HC/HCT151
FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care.
INPUTS OUTPUTS
ES
2
S
1
S
0
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
YY
HXXXXXXXXXXXHL
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
L
H
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
L
L
L
L
L
L
L
L
H
H
H
H
L
L
H
H
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
L
L
L
L
H
H
H
H
L
L
L
L
L
L
H
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
H
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
L
L
L
L
H
H
H
H
H
H
H
H
L
L
H
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
H
H
L
H
L
L
H
L
H
Fig.4 Functional diagram. Fig.5 Logic diagram.
Page 5
December 1990 5
Philips Semiconductors Product specification
8-input multiplexer 74HC/HCT151
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r=tf
= 6 ns; CL= 50 pF
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS
+25 −40 to +85 −40 to+125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
In to Y
52
19
15
170
34
29
215
43
37
255
51
43
ns
2.0
4.5
6.0
Fig.6
t
PHL
/ t
PLH
propagation delay
In to Y
58
21
17
185
37
31
230
46
39
280
56
48
ns
2.0
4.5
6.0
Fig.6
t
PHL
/ t
PLH
propagation delay
Sn to Y
61
22
18
185
37
31
230
46
39
280
56
48
ns
2.0
4.5
6.0
Fig.7
t
PHL
/ t
PLH
propagation delay
Sn to Y
61
22
18
205
41
35
255
51
43
310
62
53
ns
2.0
4.5
6.0
Fig.7
t
PHL
/ t
PLH
propagation delay
E to Y
41
15
12
125
25
21
155
31
26
190
38
32
ns
2.0
4.5
6.0
Fig.7
t
PHL
/ t
PLH
propagation delay
E to Y
47
17
14
145
29
25
180
36
31
220
44
38
ns
2.0
4.5
6.0
Fig.7
t
THL
/ t
TLH
output transition time
19
7
6
75
15
13
95
19
16
110
22
19
ns
2.0
4.5
6.0
Figs 6 and 7
Page 6
December 1990 6
Philips Semiconductors Product specification
8-input multiplexer 74HC/HCT151
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r=tf
= 6 ns; CL= 50 pF
INPUT UNIT LOAD COEFFICIENT
I
n
S
n
E
0.45
1.50
0.30
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
In to Y
22 38 48 57 ns 4.5 Fig.6
t
PHL
/ t
PLH
propagation delay
In to Y
22 38 48 57 ns 4.5 Fig.6
t
PHL
/ t
PLH
propagation delay
Sn to Y
23 41 51 62 ns 4.5 Fig.7
t
PHL
/ t
PLH
propagation delay
Sn to Y
25 43 54 65 ns 4.5 Fig.7
t
PHL
/ t
PLH
propagation delay
E to Y
16 29 36 44 ns 4.5 Fig.7
t
PHL
/ t
PLH
propagation delay
E to Y
21 36 45 54 ns 4.5 Fig.7
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5
Figs 6 and 7
Page 7
December 1990 7
Philips Semiconductors Product specification
8-input multiplexer 74HC/HCT151
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.6 Waveforms showing the multiplexer input (In) to outputs (Y and Y) propagation delays and the output
transition times.
(1) HC : VM= 50%; VI= GND to VCC.
HCT : VM= 1.3 V; VI= GND to 3 V.
Fig.7 Waveforms showing the select input (Sn) and enable input (E) to outputs (Y and Y) propagation delays
and the output transition times.
(1) HC : VM= 50%; VI= GND to VCC.
HCT : VM= 1.3 V; VI= GND to 3 V.
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