74HC4851-Q100; 74HCT4851-Q100
8-channel analog multiplexer/demultiplexer with
injection-current effect control
Rev. 1 — 2 August 2012
Product data sheet
1. General description
The 74HC4851-Q100; 74HCT4851-Q100 are high-speed Si-gate CMOS devices and are
specified in compliance with JEDEC standard no. 7A.
The 74HC4851-Q100; 74HCT4851-Q100 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.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from
40 C
to +85
C
and from
40 C
to +125
C
Injection-current cross coupling < 1 mV/mA
Wide supply voltage range from 2.0 V to 6.0 V for 74HC4851-Q100
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0
)
Latch-up performance exceeds 100 mA per JESD 78 Class II level A
Low ON-state resistance:
400
(typical) at V
CC
= 2.0 V
215
(typical) at V
CC
= 3.0 V
120
(typical) at V
CC
= 3.3 V
76
(typical) at V
CC
= 4.5 V
59
(typical) at V
CC
= 6.0 V
NXP Semiconductors
74HC4851-Q100; 74HCT4851-Q100
8-channel analog multiplexer/demultiplexer with injection-current
effect control
3. Applications
Analog multiplexing and demultiplexing
Digital multiplexing and demultiplexing
Signal gating
Automotive application
4. Ordering information
Table 1.
Ordering information
Package
Temperature range Name
74HC4851D-Q100
74HCT4851D-Q100
74HC4851PW-Q100
74HCT4851PW-Q100
74HC4851BQ-Q100
74HCT4851BQ-Q100
40 C
to +125
C
40 C
to +125
C
TSSOP16
40 C
to +125
C
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
Type number
DHVQFN16 plastic dual in-line compatible thermal enhanced
SOT763-1
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
8X
2
G8
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_Q100
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 2 August 2012
2 of 21
NXP Semiconductors
74HC4851-Q100; 74HCT4851-Q100
8-channel analog multiplexer/demultiplexer with injection-current
effect control
V
CC
16
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
INJECTION
CURRENT
CONTROL
8
001aaf875
13
Y0
S0
11
14
Y1
15
Y2
S1
10
12
Y3
1-OF-8
DECODER
1
Y4
S2
9
5
Y5
2
Y6
E
6
4
Y7
3
Z
GND
Fig 3.
Functional diagram
74HC_HCT4851_Q100
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 2 August 2012
3 of 21
NXP Semiconductors
74HC4851-Q100; 74HCT4851-Q100
8-channel analog multiplexer/demultiplexer with injection-current
effect control
6. Pinning information
6.1 Pinning
74HC4851-Q100
74HCT4851-Q100
Y4
Y6
Z
Y7
Y5
E
n.c.
GND
1
2
3
4
5
6
7
8
aaa-003467
74HC4851-Q100
74HCT4851-Q100
terminal 1
index area
Y6
2
3
4
5
6
7
8
GND
S2
9
GND
(1)
16 V
CC
15 Y2
14 Y1
13 Y0
12 Y3
11 S0
10 S1
Y4
1
Z
Y7
Y5
E
n.c.
16 V
CC
15 Y2
14 Y1
13 Y0
12 Y3
11 S0
10 S1
9
S2
aaa-003468
Transparent top view
(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 4.
Pin configuration SO16 and TSSOP16
Fig 5.
Pin configuration DHVQFN16
6.2 Pin description
Table 2.
Symbol
Y4
Y6
Z
Y7
Y5
E
n.c.
GND
S2
S1
S0
Y3
Y0
Y1
Y2
V
CC
74HC_HCT4851_Q100
Pin description
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
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 2 August 2012
4 of 21
NXP Semiconductors
74HC4851-Q100; 74HCT4851-Q100
8-channel analog multiplexer/demultiplexer with injection-current
effect control
7. Functional description
Table 3.
Input
E
L
L
L
L
L
L
L
L
H
[1]
Function table
[1]
Channel ON
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
-
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
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
V
CC
V
I
V
SW
I
IK
I
SK
I
SW
I
CC
I
GND
T
stg
P
tot
[1]
[2]
[3]
Parameter
supply voltage
input voltage
switch voltage
input clamping current
switch clamping current
switch current
supply current
ground current
storage temperature
total power dissipation
Conditions
[1]
[2]
Min
0.5
0.5
0.5
-
-
-
-
50
65
Max
+7.0
V
CC
+ 0.5
V
CC
+ 0.5
20
20
25
50
-
+150
500
Unit
V
V
V
mA
mA
mA
mA
mA
C
mW
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
T
amb
=
40 C
to +125
C
[3]
-
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_Q100
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 2 August 2012
5 of 21
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