Datasheet M74HC4851 Datasheet (ST)

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

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

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

Pin connections M74HC4851

Figure 4. Functional diagram

4/17 Doc ID 8640 Rev 6

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

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

M74HC4851 Absolute maximum ratings and operating conditions

Table 6. DC specifications (continued)

Test condition Value

Symbol Parameter

V

CC

(V)

Control input

I

IN

current

Quiescent

I

CC

supply current

Table 7. AC electrical characteristics (CL = 50 pF, input tr = tf = 6 ns)

6.0 V

6.0

= VCC or GND ± 0.1 ± 0.1 ± 1 μA

IN

VIN = VCC or GND

V

IN(analog)

= GND

= 25 °C Up to 85 °C Up to 125 °C

T

A

Min. Typ. Max. Min. Max. Min. Max.

22040μA

Test condition Value

Symbol Parameter

V

CC

(V)

Test circuit 1

TA = 25 °C Up to 85 °C Up to 125 °C

Min. Typ. Max. Min. Max. Min. Max.

2.0 19.5 25 29 32

3.0 12 15.5 17.5 19.5

3.3 11 14.5 16.5 18.5

4.5 8.6 11.5 12.5 13.5

t

PHL,tPLH

Propagation
delay time,
analog input to
analog output

6.0 8 10 11 12

2.0 23 30 35 40

3.0 13.5 17.5 20 23

3.3 12.5 16.5 19 22

4.5 10 13 15 17

t

PHL, tPLH

Propagation
delay time
channel-select
to analog output

6.0 9.5 12.5 14.5 16.5

2.0 95 105 115

Unit

Unit

ns

ns

, t

t

PHZ

t

PLZ, tPZL

C

IN

C

IN

Enable disable
time, enable or

PZH

channel-select
to analog output

Input
capacitance
(digital pins)

Input
capacitance
(switches off,
any single
analog pins)

3.0 90 100 110

3.3 85 95 105

4.5 80 90 100

6.0 78 80 80

3.5 10 10 10 pF

6.7 15 15 15 pF

Doc ID 8640 Rev 6 7/17

ns

Absolute maximum ratings and operating conditions M74HC4851

Table 7. AC electrical characteristics (CL = 50 pF, input tr = tf = 6 ns) (continued)

Test condition Value

Symbol Parameter

V

CC

(V)

Test circuit 1

T

= 25 °C Up to 85 °C Up to 125 °C

A

Min. Typ. Max. Min. Max. Min. Max.

Input
capacitance

C

IN

(switches off,

22 40 40 40 pF
any common
analog pins)

Power

C

PD

dissipation
capacitance

1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current
consumption without load (refer to Figure 5). The average operating current can be obtained by the following equation:
I

(opr) = CPD x VCC x fIN + ICC/8.

CC

Table 8. Injection current coupling specification (TA= -55°C to +125°C)

3.3 24

(1)

5.0 28

Test condition Value

Symbol Parameter

Shift of output

ΔOUT

voltage of
enabled analog

V

channel

V

CC

(V)

Test circuit 2 Typ.

3.3
≤ 1 mA, RS ≤ 3.9 kΩ

I

5.0 0.100 1.0

IN

3.3

I

≤ 10 mA, RS ≤ 3.9 kΩ

5.0 0.067 5.0

IN

3.3

≤ 1 mA, RS ≤ 20 kΩ

I

5.0 0.110 2.0

IN

3.3
≤ 10 mA, RS ≤ 20 kΩ

I

5.0 0.024 20

IN

(1)

Max.

0.050 1.0

0.345 5.0

0.050 2.0

0.050 20

Unit

pF

Unit

mV

1. Typical values are measured at TA = 25°C. They are calculated as the difference from V
V

with injection current. IIN = total current injected into any other disabled channels, one at time.

OUT

8/17 Doc ID 8640 Rev 6

without injection current and

OUT

M74HC4851 Absolute maximum ratings and operating conditions

Figure 5. Test circuit 1

Table 9. Test circuit 1 - switch configuration table

Test Switch

t

PLH

t

PZL

t

PZH

, t

PHL

, t

PLZ

, t

PHZ

Open

V

CC

GND

Note: CL = 50 pF or equivalent (includes jig and probe capacitance).

R

= R1 = 10 kΩ or equivalent.

L

R

= Z

T

of pulse generator (typically 50 Ω).

OUT

Figure 6. Test circuit 2

Doc ID 8640 Rev 6 9/17

Absolute maximum ratings and operating conditions M74HC4851

Figure 7. Enable and Disable time

Figure 8. Selection path to output propagation delays

10/17 Doc ID 8640 Rev 6

M74HC4851 Absolute maximum ratings and operating conditions

Figure 9. Input (COM, 0 to 7 in) to output (0 to 7 out, COM) propagation delays

Figure 10. Channel resistance R

Figure 11. ICC (opr)

ON

Doc ID 8640 Rev 6 11/17

Package information M74HC4851

3 Package information

In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK

®

packages, depending on their level of environmental compliance. ECOPACK®

®

is an ST trademark.

12/17 Doc ID 8640 Rev 6

M74HC4851 Package information

3.1 SO-16 package information

Figure 12. SO-16 mechanical drawing

Table 10. SO-16 mechanical data

Dimensions

Millimeters Inches

Ref.

Min. Typ. Max. Min. Typ. Max.

A1.750.069

A1 0.10 0.25 0.004 0.010

A2 1.25 0.049

b 0.31 0.51 0.012 0.020

c 0.17 0.25 0.007 0.010

D 9.80 9.90 10.00 0.386 0.390 0.394

E 5.80 6.00 6.20 0.228 0.236 0.244

E1 3.80 3.90 4.00 0.150 0.154 0.157

e 1.27 0.050

h 0.25 0.50 0.010 0.020

L 0.40 1.27 0.016 0.050

k0 8

ccc 0.10 0.004

Doc ID 8640 Rev 6 13/17

Package information M74HC4851

3.2 TSSOP16 package information

Figure 13. TSSOP16 mechanical drawing

Table 11. TSSOP16 mechanical data

Dimensions

Ref.

Min. Typ. Max. Min. Typ. Max.

A1.200.047

A1 0.05 0.15 0.002 0.006

A2 0.80 1.00 1.05 0.031 0.039 0.041

b 0.19 0.30 0.007 0.012

c 0.09 0.20 0.004 0.008

D 4.90 5.00 5.10 0.193 0.197 0.201

E 6.20 6.40 6.60 0.244 0.252 0.260

E1 4.30 4.40 4.50 0.169 0.173 0.177

e 0.65 0.0256

k0° 8°0° 8°

L 0.45 0.60 0.75 0.018 0.024 0.030

L1 1.00 0.039

aaa 0.10 0.004

Millimeters Inches

14/17 Doc ID 8640 Rev 6

M74HC4851 Ordering information

4 Ordering information

Table 12. Order codes

M74HC4851YRM13TR

Order code

(1)

Temperature

range

-40/+125 °C

Package Packing Marking

SO-16

(automotive grade)

74HC4851Y

M74HC4851RM13TR -55/+125 °C SO-16 74HC4851

Tape and reel

M74HC4851YTTR

(1)

-40/+125 °C

TSSOP16

(automotive grade)

HC4851Y

M74HC4851TTR -55/+125 °C TSSOP16 HC4851

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.

Doc ID 8640 Rev 6 15/17

Revision history M74HC4851

5 Revision history

Table 13. Document revision history

Date Revision Changes

– Document reformatted.
– Added ESD charged device model feature on cover page.

05-Apr-2012 4

11-May-2012 5

15-Jun-2012 6

– Added ESD values to Table 4: Absolute maximum ratings.
– Modified Chapter 3: Package information.
– Modified Chapter 4: Ordering information.

– Added automotive-grade part number M74HC4851YRM13TR to

Table 12.: Order codes.

– Added Table 1.: Device summary and Modified Description text on

coverpage.

– Updated Table 1: Device summary and Table 12: Order codes.
– Corrected ON resistance values in Features on page 1
– Updated T
– Added footnote 1 to Table 1: Device summary

in Table 5: Recommended operating conditions

op

16/17 Doc ID 8640 Rev 6

M74HC4851

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Doc ID 8640 Rev 6 17/17