74HC4851; 74HCT4851
Rev. 3 — 24 August 2018
8-channel analog multiplexer/demultiplexer with
injection-current effect control
Product data sheet
1. General description
The 74HC4851; 74HCT4851 are high-speed Si-gate CMOS devices and are specified in
compliance with JEDEC standard no. 7A.
The 74HC4851; 74HCT4851 are 8-channel analog multiplexers/demultiplexers with three digital
select inputs (S0 to S2), an active-LOW enable input (E), eight independent inputs/outputs
(Y0 to Y7) and a common input/output (Z). The devices feature injection-current effect control,
which has excellent value in automotive applications where voltages in excess of the supply
voltage are common.
With E LOW, one of the eight switches is selected (low impedance ON-state) by S0 to S2.
With E HIGH, all switches are in the high-impedance OFF-state, independent of S0 to S2.
The injection-current effect control allows signals at disabled analog input channels to exceed the
supply voltage without affecting the signal of the enabled analog channel. This eliminates the need
for external diode/resistor networks typically used to keep the analog channel signals within the
supply-voltage range.
2. Features and benefits
•
•
•
Injection-current cross coupling < 1 mV/mA
Wide supply voltage range from 2.0 V to 6.0 V for 74HC4851
ESD protection:
•
HBM JESD22-A114E exceeds 2000 V
•
CDM JESD22-C101C exceeds 1000 V
Latch-up performance exceeds 100 mA per JESD 78 Class II level A
Low ON-state resistance:
•
400 Ω (typical) at V
CC
= 2.0 V
•
215 Ω (typical) at V
CC
= 3.0 V
•
120 Ω (typical) at V
CC
= 3.3 V
•
76 Ω (typical) at V
CC
= 4.5 V
•
59 Ω (typical) at V
CC
= 6.0 V
•
•
3. Applications
•
•
•
Analog multiplexing and demultiplexing
Digital multiplexing and demultiplexing
Signal gating
Nexperia
74HC4851; 74HCT4851
8-channel analog multiplexer/demultiplexer with injection-current effect control
4. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range
74HC4851D
74HCT4851D
74HC4851PW
74HCT4851PW
74HC4851BQ
74HCT4851BQ
-40 °C to +125 °C
-40 °C to +125 °C
TSSOP16
-40 °C to +125 °C
Name
SO16
Description
plastic small outline package; 16 leads;
body width 3.9 mm
plastic thin shrink small outline package;
16 leads; body width 4.4 mm
Version
SOT109-1
SOT403-1
SOT763-1
DHVQFN16 plastic dual in-line compatible thermal
enhanced very thin quad flat package; no leads;
16 terminals; body 2.5 × 3.5 × 0.85 mm
5. Functional diagram
11
10
9
6
0
2
G8
8X
0
7
13
S0
S1
S2
11
10
9
14
15
12
1
5
2
E
6
3
Z
4
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
3
MUX/DMUX
0
1
2
3
4
5
6
7
13
14
15
12
1
5
2
4
001aad541
001aad542
Fig. 1.
Logic symbol
Fig. 2.
IEC logic symbol
74HC_HCT4851
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 3 — 24 August 2018
2 / 19
Nexperia
74HC4851; 74HCT4851
8-channel analog multiplexer/demultiplexer with injection-current effect control
V
CC
16
INJECTION
CURRENT
CONTROL
11
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
10
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
6
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
8
001aaf875
13
Y0
S0
14
Y1
15
Y2
S1
12
Y3
1-OF-8
DECODER
1
Y4
S2
9
5
Y5
2
Y6
E
4
Y7
3
Z
GND
Fig. 3.
Functional diagram
74HC_HCT4851
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 3 — 24 August 2018
3 / 19
Nexperia
74HC4851; 74HCT4851
8-channel analog multiplexer/demultiplexer with injection-current effect control
6. Pinning information
6.1. Pinning
74HC4851
74HCT4851
terminal 1
index area
16 V
CC
15 Y2
14 Y1
13 Y0
12 Y3
GND
(1)
8
9
S2
11 S0
10 S1
GND
Y4
2
3
4
5
6
7
1
74HC4851
74HCT4851
Y4
Y6
Z
Y7
Y5
E
n.c.
GND
1
2
3
4
5
6
7
8
001aaf876
Y6
Z
16 V
CC
15 Y2
14 Y1
13 Y0
12 Y3
11 S0
10 S1
9
S2
Y7
Y5
E
n.c.
001aaf877
Transparent top view
Fig. 4.
Pin configuration SOT109-1 (SO16) and
SOT403-1 (TSSOP16)
(1) This is not a supply pin. The substrate is
attached to this pad using conductive die attach
material. There is no electrical or mechanical
requirement to solder this pad. However, if it is
soldered, the solder land should remain floating or
be connected to GND.
Fig. 5.
Pin configuration SOT763-1 (DHVQFN16)
6.2. Pin description
Table 2. Pin description
Symbol
Y4
Y6
Z
Y7
Y5
E
n.c.
GND
S2
S1
S0
Y3
Y0
Y1
Y2
V
CC
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Description
independent input/output
independent input/output
common input/output
independent input/output
independent input/output
enable input (active LOW)
not connected
ground (0 V)
select input
select input
select input
independent input/output
independent input/output
independent input/output
independent input/output
supply voltage
74HC_HCT4851
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 3 — 24 August 2018
4 / 19
Nexperia
74HC4851; 74HCT4851
8-channel analog multiplexer/demultiplexer with injection-current effect control
7. Functional description
Table 3. Function table
H = HIGH voltage level; L = LOW voltage level; X = don’t care.
Input
E
L
L
L
L
L
L
L
L
H
S2
L
L
L
L
H
H
H
H
X
S1
L
L
H
H
L
L
H
H
X
S0
L
H
L
H
L
H
L
H
X
Y0 to Z
Y1 to Z
Y2 to Z
Y3 to Z
Y4 to Z
Y5 to Z
Y6 to Z
Y7 to Z
-
Channel ON
8. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
CC
V
I
V
SW
I
IK
I
SK
I
SW
I
CC
I
GND
T
stg
P
tot
[1]
[2]
[3]
Conditions
[1]
[2]
V
I
< -0.5 V or V
I
> V
CC
+ 0.5 V
V
SW
< -0.5 V or V
SW
> V
CC
+ 0.5 V
V
SW
> -0.5 V or V
SW
< V
CC
+ 0.5 V
Min
-0.5
-0.5
-0.5
-
-
-
-
-50
-65
Max
+7.0
Unit
V
supply voltage
input voltage
switch voltage
input clamping current
switch clamping current
switch current
supply current
ground current
storage temperature
total power dissipation
T
amb
= -40 °C to +125 °C
[3]
V
CC
+ 0.5 V
V
CC
+ 0.5 V
±20
±20
±25
50
-
+150
500
mA
mA
mA
mA
mA
°C
mW
-
The minimum and maximum input voltage rating may be exceeded if the input clamping current rating is observed.
The minimum and maximum switch voltage rating may be exceeded if the switch clamping current rating is observed.
For SO16 package: P
tot
derates linearly with 8 mW/K above 70 °C.
For TSSOP16 package: P
tot
derates linearly with 5.5 mW/K above 60 °C.
For DHVQFN16 packages: P
tot
derates linearly with 4.5 mW/K above 60 °C.
74HC_HCT4851
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 3 — 24 August 2018
5 / 19
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