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Single 8-channel analog MUX/DEMUX with injection current
Features
■ Low power dissipation:
I
= 2 μA (max.) at TA = 25 °C
CC
■ Injection current protection:
V
R
■ "ON" resistance at T
215 Ω typ. (V
160 Ω typ. (V
150 Ω typ. (V
■ Fast switching:
t
■ Wide operating supply voltage range:
V
■ High noise immunity:
V
■ Pin and function compatible with series 4051,
4851
■ Latch-up performance exceeds 500 mA
(JESD 17)
■ ESD performance:
HBM > 2000 V JESD22-A111
MM > 200 V JESD22-A115
CDM > 1000 V JESD22-C101
<1 mV at V
ΔOUT
≤ 3.9 kΩ
S
CC
CC
CC
= 8.6 ns (typ.) at TA = 25 °C, VCC = 4.5 V
pd
= 2 V to 6 V
CC
NIH
= V
= 28% VCC (min.)
NIL
= 5 V I
CC
= 25 °C:
A
≤ 1 mA
IN
= 3.0 V)
= 4.5 V)
= 6 V)
M74HC4851
protection
Datasheet − production data
SO-16
Applications
■ Automotive
■ Computer
■ Consumer
■ Industrial
Description
The M74HC4851 is a single 8-channel analog
multiplexer/demultiplexer manufactured with
silicon gate C2MOS technology.
It features injection current effect control which
makes the device particularly suited for use in
automotive applications where voltages in excess
of normal logic voltages are common. The
injection current effect control allows signals at
disabled input channels to exceed the supply
voltage range or go down to ground without
affecting the signal of the enabled analog
channel.
TSSOP16
This eliminates the need for external dioderesistor networks typically used to keep the
analog channel signals within the supply voltage
range.
Table 1. Device summary
Order code Temperature range Package
(1)
(1)
-40/+125 °C SO-16 (automotive grade)
-40/+125 °C TSSOP16 (automotive grade)
M74HC4851YRM13TR
M74HC4851RM13TR -55/+125 °C SO-16
M74HC4851YTTR
M74HC4851TTR -55/+125 °C TSSOP16
1. Qualification and characterization (according to AEC Q100 and Q003 or equivalent) and advanced screening (according to
AEC Q001 and Q002 or equivalent) are ongoing.
June 2012 Doc ID 8640 Rev 6 1/17
This is information on a product in full production.
www.st.com
17
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Pin connections M74HC4851
1 Pin connections
Figure 1. Pin connections and IEC logic symbols
Table 2. Pin descriptions
Pin number Symbol Name and function
3 COM OUT/IN Common output/input
6 INH INHIBIT input
7 NC Not connected
11, 10, 9 A, B, C Select inputs
13,14,15,
12, 1, 5, 2, 4
8 GND Ground (0 V)
16 VCC Positive supply voltage
0 to 7 Independent input/outputs
2/17 Doc ID 8640 Rev 6
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M74HC4851 Pin connections
Table 3. Truth table
Input state
On channel
INH C B A
LLLL 0
LLLH 1
LLHL 2
LLHH 3
LHLL 4
LHLH 5
LHHL 6
LHHH 7
H X X X NONE
Note: X: don’t care.
Figure 2. Control input equivalent circuit
Figure 3. I/O equivalent circuit
Doc ID 8640 Rev 6 3/17
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Pin connections M74HC4851
Figure 4. Functional diagram
4/17 Doc ID 8640 Rev 6
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M74HC4851 Absolute maximum ratings and operating conditions
2 Absolute maximum ratings and operating conditions
Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these conditions is not implied.
Table 4. Absolute maximum ratings
ESD (JESD22)
Symbol Parameter Value Unit
V
Supply voltage -0.5 to +7 V
CC
Control input voltage -0.5 to VCC + 0.5 V
V
IN
V
Switch I/O voltage -0.5 to VCC + 0.5 V
I/O
Control input diode current ± 25 mA
I
CK
I/O diode current ± 25 mA
I
IOK
I
DC VCC or ground current ± 50 mA
CC
P
SO-16 500
Power dissipation
D
T
stg
Lead temperature (10 sec) 300 °C
T
L
Storage temperature -65 to +150 °C
TSSOP16 450
(1)
mW
(1)
mW
Human body model (HBM) 2000 V
Machine model (MM) 200 V
Charged device model (CDM) 1000 V
1. Power dissipation at 65 °C. Derating from 65 °C to 125 °C: SO package -7 mW/°C; TSSOP package -6.1 mW/°C.
Table 5. Recommended operating conditions
Symbol Parameter Value Unit
V
V
V
V
T
t
r
1. For voltage drops across the switch greater than 1.2 V (switch on), excessive VCC current may be drawn; i.e., the current
out of the switch may contain both V
maximum ratings are exceeded.
2. V
IN
Supply voltage 2 to 6 V
CC
Input output voltage 0 to VCC V
I/O
Static or dynamic voltage across switch
I/O
Control input voltage 0 to VCC V
IN
(1)
0 to 1.2 V
SO-16, TSSOP16 -55 to +125 °C
Operating temperature
op
(2)
Input rise and fall time
, tf
(channel select or enable inputs only)
from 30% to 70% VCC of channel Selected or Enable Inputs.
and switch input components. The reliability of the device is unaffected unless the
CC
SO-16, TSSOP16 (automotive grade) -40 to +125 °C
= 2.0 V 0 to 1000
V
CC
V
= 3.0.V 0 to 800
CC
= 3.3 V 0 to 700
V
CC
= 4.5 V 0 to 500
V
CC
V
= 6.0 V 0 to 400
CC
ns
Doc ID 8640 Rev 6 5/17
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Absolute maximum ratings and operating conditions M74HC4851
Table 6. DC specifications
Symbol Parameter
V
CC
(V)
2.0 1.5 1.5 1.5
3.0 2.1 2.1 2.1
V
High level input
IHC
voltage
3.0 2.3 2.3 2.3
4.5 3.15 3.15 3.15
6.0 4.2 4.2 4.2
2.0 0.5 0.5 0.5
3.0 0.9 0.9 0.9
V
Low level input
ILC
voltage
3.3 1.0 1.0 1.0
4.5 1.35 1.35 1.35
6.0 1.8 1.8 1.8
2.0 IS=2mA
3.0
ON
ON resistance
R
3.3 210 270 305 345
4.5 160 210 240 270
Test condition Value
TA = 25 °C Up to 85 °C Up to 125 °C
Min. Typ. Max. Min. Max. Min. Max.
500 650 670 700
215 280 320 360
I
≤2mA
S
= V
IHC
or
V
IN
V
ILC
VIS = VCC to
GND
Unit
V
V
Ω
ΔR
I
I
OFF
OFF
I
ON
ON
Difference of
ON resistance
between
switches
Input/output
leakage current
(switch off) (any
channel)
Input/output
leakage current
(switch off)
(common
channel)
Switch input
leakage current
(switch on,
output open)
6.0 150 195 220 250
2.0 I
3.0
3.3 2 8 12 16
4.5 2 8 12 16
=2mA
S
IS≤2mA
V
= V
IN
IHC
V
ILC
VIS = VCC/2
or
410 15 20
2 8 12 16
Ω
6.0 3 9 13 18
6.0
= VCC or GND
V
IN
±0.1 ± 0.5 ± 1.0 μA
6.0 ± 0.2 ± 2 ± 4 μA
6.0 V
= VCC or GND ±0.1 ± 0.5 ± 1 μA
IN
6/17 Doc ID 8640 Rev 6