Analog Multiplexers/
Demultiplexers with
Injection Current Effect
Control
Automotive Customized
MC74HC4851A,
MC74HC4852A
These devices are pin compatible to standard HC405x and
MC1405xB analog mux/demux devices, but feature injection current
effect control. This makes them especially suited for usage in
automotive applications where voltages in excess of normal logic
voltage are common.
The injection current effect control allows signals at disabled analog
input channels to exceed the supply voltage range 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.
The devices utilize low power silicon gate CMOS technology.
The Channel Select and Enable inputs are compatible with standard
CMOS outputs.
Features
• Injection Current Cross−Coupling Less than 1 mV/mA (See
Figure 10)
• Pin Compatible to HC405X and MC1405XB Devices
• Power Supply Range (V
• In Compliance With the Requirements of JEDEC Standard No. 7 A
• Chip Complexity: 154 FETs or 36 Equivalent Gates
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free and are RoHS Compliant
− GND) = 2.0 to 6.0 V
CC
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SOIC−16
D SUFFIX
CASE 751B
TSSOP−16
DT SUFFIX
CASE 948F
MARKING DIAGRAMS
16
HC485xAG
AWLYWW
1
SOIC−16
16
HC48
5xA
ALYWG
G
1
TSSOP−16
x= 1 or 2
A= Assembly Location
WL, L= Wafer Lot
YY, Y= Year
WW, W = Work Week
G or G= Pb−Free Package
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
1Publication Order Number:
MC74HC4851A/D
MC74HC4851A, MC74HC4852A
13
X0
14
X1
15
ANALOG
INPUTS/
OUTPUTS
CHANNEL
SELECT
INPUTS
Figure 2. MC74HC4851A 16−Lead Pinout (Top View)
X2
ENABLE
12
X3
1
X4
5
X5
2
X6
4
X7
11
A
10
B
9
C
6
PIN 16 = V
PIN 8 = GND
MULTIPLEXER/
DEMULTIPLEXER
CC
3
COMMON
X
OUTPUT/
INPUT
Figure 1. MC74HC4851A Logic Diagram
Single−Pole, 8−Position Plus Common Off
X2X1X0X3ABC
V
CC
15161413121110
2134567
X4X6XX7X5 Enable NCGND
9
8
FUNCTION TABLE − MC74HC4851A
Control Inputs
Select
Enable
L
L
L
L
L
L
L
L
H
CBA
L
L
L
L
L
H
H
H
H
X
L
L
H
H
L
H
H
L
L
L
H
H
L
H
H
X
X
V
X4
CC
ON Channels
X0
X1
X2
X3
X4
X5
X6
X7
NONE
116
X6
X7
X5
ENABLE
215
314
X
413
GND
512
611
N
710
C
89
GND
C
X2
X1
X0
X3
A
B
Figure 3. MC74HC4851A QFN Pinout
INPUTS/OUTPUTS
CHANNEL‐SELECT
ANALOG
INPUTS
Double−Pole, 4−Position Plus Common Off
12
X0
14
X1
X2
X3
Y0
Y1
Y2
Y3
ENABLE
15
11
1
5
2
4
10
A
9
B
6
X SWITCH
Y SWITCH
13
X
3
Y
PIN 16 = V
PIN 8 = GND
CC
Figure 4. MC74HC4852A Logic Diagram
COMMON
OUTPUTS/INPUTS
FUNCTION TABLE − MC74HC4852A
Control Inputs
Select
BA
L
L
L
L
L
H
H
H
X
L
L
H
L
H
X
ON ChannelsEnable
Y0
Y1
Y2
Y3
X0
X1
X2
X3
NONE
X = Don’t Care
X2X1XX0X3AB
V
CC
15161413121110
2134567
9
8
Y0Y2YY3Y1 Enable NCGND
Figure 5. MC74HC4852A 16−Lead Pinout (Top View)
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2
MC74HC4851A, MC74HC4852A
MAXIMUM RATINGS
SymbolParameterValueUnit
V
Positive DC Supply Voltage(Referenced to GND)–0.5 to +7.0V
CC
V
DC Input Voltage (Any Pin) (Referenced to GND)–0.5 to VCC + 0.5V
in
IDC Current, Into or Out of Any Pin±25mA
P
Power Dissipation in Still Air,SOIC Package†
D
TSSOP Package†
T
Storage Temperature Range–65 to +150°C
stg
T
Lead Temperature, 1 mm from Case for 10 Seconds
L
SOIC or TSSOP Package
500
450
260
mW
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of
these limits are exceeded, device functionality should not be assumed, damage may occur and
reliability may be affected.
†Derating: SOIC Package: –7 mW/°C from 65° to 125°C
TSSOP Package: −6.1 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
SymbolParameterMinMaxUnit
V
VIO*Static or Dynamic Voltage Across Switch0.01.2V
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
*For voltage drops across switch greater than 1.2 V (switch on), excessive V
contain both V
Positive DC Supply Voltage(Referenced to GND)2.06.0V
CC
V
DC Input Voltage (Any Pin)(Referenced to GND)GNDV
in
T
Operating Temperature Range, All Package Types–55+125°C
A
tr, tfInput Rise/Fall TimeVCC = 2.0 V
(Channel Select or Enable Inputs)V
current may be drawn; i.e., the current out of the switch may
and switch input components. The reliability of the device will be unaffected unless the Maximum Ratings are exceeded.
CC
CC
V
= 4.5 V
CC
= 6.0 V
CC
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high−impedance circuit. For proper operation, V
V
should be constrained to the
out
range GND v (V
in
or V
) v VCC.
out
in
and
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or V
CC
Unused outputs must be left open.
CC
0
0
0
1000
500
400
V
ns
).
DC CHARACTERISTICS — Digital Section (Voltages Referenced to GND) V
Symbol
V
IH
V
IL
I
in
I
CC
Minimum High−Level Input Voltage,
Channel−Select or Enable Inputs
Maximum Low−Level Input Voltage,
Channel−Select or Enable Inputs
Maximum Input Leakage Current on Digital Pins
(Enable/A/B/C)
Maximum Quiescent Supply Current
(per Package)
ParameterCondition
Ron = Per Spec2.0
Ron = Per Spec2.0
Vin = VCC or GND6.0±0.1±1.0±1.0
V
V
in(digital)
in(analog)
= VCC or GND
= GND
= GND, Except Where Noted
EE
V
CC
V
Guaranteed Limit
−55 to 25°C≤85°C≤125°C
1.50
3.0
4.5
6.0
2.10
3.15
4.20
0.50
3.0
4.5
6.0
0.90
1.35
1.80
6.022040
1.50
2.10
3.15
4.20
0.50
0.90
1.35
1.80
1.50
2.10
3.15
4.20
0.50
0.90
1.35
1.80
Unit
V
V
mA
mA
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MC74HC4851A, MC74HC4852A
DC CHARACTERISTICS — Analog Section
SymbolParameterConditionV
R
Maximum “ON” ResistanceVin = VIL or VIH; VIS = VCC to
on
DR
Delta “ON” ResistanceVin = VIL or VIH; VIS = VCC/2
on
I
Maximum Off−Channel Leakage Current,
off
Any One Channel
Common Channel
I
Maximum On−Channel Leakage
on
Channel−to−Channel
1. VIS is the input voltage of an analog I/O pin.
is the currebnt flowing in or out of analog I/O pin.
2. I
S
GND (Note 1); I
(Note 2)
(Note 1); I
Vin = VCC or GND
Vin = VCC or GND
≤ 2.0 mA
S
≤ 2.0 mA (Note 2)
S
Guaranteed Limit
−55 to 25°C≤85°C≤125°C
CC
2.0
3.0
4.5
6.0
2.0
3.0
4.5
6.0
6.0±0.1
1700
1100
550
400
300
160
80
60
±0.1
1750
1200
650
500
400
200
100
80
±0.1
±0.1
1800
1300
750
600
500
240
120
100
±0.1
±0.1
6.0±0.1±0.1±0.1
Unit
W
W
mA
mA
AC CHARACTERISTICS (C
Symbol
t
,
Maximum Propagation Delay, Analog Input to Analog Output2.0
PHL
t
PLH
t
,
Maximum Propagation Delay, Enable or Channel−Select to Analog Output2.0
PHL
t
PHZ,PZH
t
,
PLH
t
PLZ,PZL
C
Maximum Input CapacitanceDigital Pins
in
= 50 pF, Input tr = tf = 6 ns)
L
ParameterV
(All Switches Off)Any Single Analog Pin
(All Switches Off)Common Analog Pin
C
Power Dissipation CapacitanceTypical5.020pF
PD
INJECTION CURRENT COUPLING SPECIFICATIONS (V
Symbol
VD
Maximum Shift of Output Voltage of Enabled Analog Channel
out
* Iin = Total current injected into all disabled channels.
ParameterConditionTypMaxUnit
3.0
4.5
6.0
3.0
4.5
6.0
= 5V, TA = −55°C to +125°C)
CC
Iin* ≤ 1 mA, RS ≤ 3,9 kW
I
* ≤ 10 mA, RS ≤ 3,9 kW
in
I
* ≤ 1 mA, RS ≤ 20 kW
in
I
* ≤ 10 mA, RS ≤ 20 kW
in
−55 to 25°C≤85°C≤125°CUnit
CC
160
80
40
30
260
160
80
78
10
35
40
180
90
45
35
280
180
90
80
10
35
40
0.1
1.0
0.5
5.0
200
100
50
40
300
200
100
80
10
35
40
1.0
5.0
2.0
20
ns
ns
pF
mV
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MC74HC4851A, MC74HC4852A
1100
1000
900
800
700
600
500
400
, ON RESISTANCE (OHMS)
300
on
R
200
100
0
0.00.40.81.21.62.00.00.61.21.82.43.0
Vin, INPUT VOLTAGE (VOLTS), REFERENCED TO GND
-55°C
+25°C
+125°C
1100
1000
900
800
700
600
500
400
, ON RESISTANCE (OHMS)
300
on
R
200
100
0
Vin, INPUT VOLTAGE (VOLTS), REFERENCED TO GND
Figure 6. Typical On Resistance VCC = 2VFigure 7. Typical On Resistance VCC = 3V
660
600
540
480
420
360
300
240
, ON RESISTANCE (OHMS)
180
on
R
120
60
0
0.00.91.82.73.64.50.01.22.43.64.86.0
-55°C
+25°C
+125°C
440
400
360
320
280
240
200
160
, ON RESISTANCE (OHMS)
120
on
R
80
40
0
-55°C
+25°C
+125°C
-55°C
+25°C
+125°C
, INPUT VOLTAGE (VOLTS), REFERENCED TO GND
V
in
Figure 8. Typical On Resistance V
, INPUT VOLTAGE (VOLTS), REFERENCED TO GND
V
in
= 4.5VFigure 9. Typical On Resistance VCC = 6V
CC
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