SI9243A_11 [VISHAY]

Single-Ended Bus Transceiver; 单端总线收发器


元器件型号：	SI9243A_11
生产厂家：	VISHAY TELEFUNKEN
描述和应用：	Single-Ended Bus Transceiver 单端总线收发器总线收发器
PDF文件：	总7页 (文件大小：146K)
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Si9243A

Vishay Siliconix

Single-Ended Bus Transceiver

DESCRIPTION

The Si9243AEY is a monolithic bus transceiver designed to

provide bidirectional serial communication in automotive

diagnostic applications.

The device incorporates protection against overvoltages and

short circuits to V

BAT

. The transceiver pin is protected and

can be driven beyond the V

BAT

voltage.

The RX output is capable of driving CMOS or 1 x LSTTL

load.

The Si9243AEY is built on the Vishay Siliconix BiC/DMOS

process. This process supports bipolar transistors, CMOS,

and DMOS. An epitaxial layer prevents latchup.

The Si9243AEY is available in a 8-pin SO package and

operates over the automotive temperature range (- 40 °C to

125 °C). The Si9243AEY is available in both standard and

lead (Pb)-free packages.

FEATURES

• Operating Power Supply Range

6 V



BAT



36 V

• Reverse Battery Protection Down to V

BAT

-

24 V

• Standby Mode With Very Low Current Consumption

BAT(SB)

= 1 µA at V

= 0.5 V

• Low Quiescent Current in OFF Condition

BAT

= 120 µA and I



10 A

• ISO 9141 Compatible

• Overtemperature Shutdown Function For K Output

• Defined K Output OFF for Open GND

• Defined Receive Output Status for Open K Input

• Defined K Output OFF for TX Input Open

• Open Drain Fault Output

• 2 kV ESD

• Typical Transmit Speeds of 200 kBaud

PIN CONFIGURATION AND FUNCTIONAL BLOCK DIAGRAM

GND

BAT

Logic and Fault Detect Circuitry

(See State Diagram and Truth Table)

Document Number: 70788

S11-0975-Rev. F, 16-May-11

www.vishay.com

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT

www.vishay.com/doc?91000

Si9243A

Vishay Siliconix

OUTPUT TABLE AND STATE DIAGRAMS

Over Temp

INPUTS

A=0

STATE

VARIABLE

OUTPUT

TABLE

HiZ

Over Temp

Short Circuit

Receive Mode

Comments

Power On

A=1

Over Temp . TX

Short Circuit

Power On

B=1

B=0

Note: Over Temp is an internal condition, not meant

to be a logic signal.

X = "1" or "0"

HiZ = High Impedance State

ABSOLUTE MAXIMUM RATINGS

Parameter

Voltages Referenced to Ground

Voltage On V

BAT

Voltage K, L

Voltage Difference V

(VBAT, K, L)

Voltage On Any Pin (Except V

BAT

, K, L) or Max. Current

Voltage on V

K Pin Only, Short Circuit Duration (to V

BAT

or GND)

Operating Temperature (T

)

Junction and Storage Temperature

Thermal Impedance (

)

- 24 to 45

- 16 to (V

BAT

+ 1)

- 0.3 V to (V

+ 0.3 V) or 10

Continuous

- 40 to 125

- 55 to 150

125

°C

°C/W

Limit

Unit

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation

of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum

rating conditions for extended periods may affect device reliability.

RECOMMENDED OPERATING RANGE

Parameter

Voltages Referenced to Ground

BAT

K, L

Digital Inputs

4.5 to 5.5

6 to 36

0 to V

Limit

Unit

www.vishay.com

Document Number: 70788

S11-0975-Rev. F, 16-May-11

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT

www.vishay.com/doc?91000

Si9243A

Vishay Siliconix

SPECIFICATIONS

Parameter

Transmitter and Logic Levels

TX Input Low Voltage

TX Input High Voltage

TX Input Capacitance

TX Input Pull-up Resistance

K Transmit

= 510



± 5 %, V

BAT

= 6 to 18

K Output Low Voltage

OLK

= 1 k ± 5 %, V

BAT

= 16 to 36

= 510



± 5 %, V

BAT

= 4.5

K Output High Voltage

K Rise, Fall Times

K Output Sink Resistance

K Output Capacitance

Receiver

L and K Input High Voltage

L and K Input Hysteresis

c, d

L and K Input Currents

and RX

Output Low Voltage

and RX

Pull-up Resistance

Turn On Delay

OHK

Rsi

HYS

OLR

d(on)

= 510



± 5 %, V

BAT

= 6 V to 18 V

= 10 nF, See Test Circuit

= 1 k ± 5 %, V

BAT

= 16 V to 36 V

= 4.7 nF, See Test Circuit

= 510



± 5 %, V

BAT

= 6 V to 18 V

= 10 nF, See Test Circuit

= 1 k ± 5 %, V

BAT

= 16 V to 36 V

= 4.7 nF, See Test Circuit

TX = 0 V, V

BAT



16 V

IHT



, V

IHK



, V

IHL



BAT



12 V



0.5 V, V

BAT



12 V



5.5 V, TX = 0 V

IHT



, V

IHK



, V

IHL



BAT



12 V

= 510

,

= 10 nF

6 V < V

BAT

< 16 V, C

= 20 pF

6 V < V

BAT

< 16 V, R

= 510

,



1.3 nF

Temperature Rising

TX = 4

= V

BAT

ILK

, V

ILL

= 0.35 V

BAT

OLR

= 1 mA

= 510



± 5 %, V

BAT

= 4.5 to 18

= 1 k ± 5 %, V

BAT

= 16 to 36

See Test Circuit

TX = 0 V

Full

0.65 V

BAT

0.05 V

BAT

0.4

µs

0.95 V

BAT

0.95 V

BAT

9.6

110

µs



0.2 V

BAT

0.2 V

BAT

1.2

Symbol

Test Conditions Unless Specified

= 4.5 V to 5.5 V

BAT

= 6 V to 36 V

Limits

- 40 to 125 °C

Temp.

Full

= 5.5 V, TX = 1.5 V, 3.5 V

Full

3.5

Unit

Max.

1.5

Min.

Typ.

ILT

IHT

INT

k

µA

k

Turn Off Delay

d(off)

Supplies

Bat Supply Current On

Bat Supply Current Off

Bat Supply Current Standby

Logic Supply Current On

Logic Supply Current Off

Miscellaneous

TX Transmit Baud Rate

and RX

Receive Baud Rate

Transmission Frequency

TX Minimum Pulse Width

d, e

Over Temperature Shutdown

BAT(on)

BAT(off)

BAT(SB)

DD(on)

DD(off)

Full

1.2

120

1.4

220

2.3

µA

K-RXK

SHUT

Full

10.4

200

160

180

200

kBaud

kHz

µs

°C

Temperature Shutdown Hysteresis

HYST

Notes:

a. Room = 25 °C, Cold and Hot = as determined by the operating temperature suffix.

b. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.

c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

d. Guaranteed by design, not subject to production test.

e. Minimum pulse width to reset a fault condition.

Document Number: 70788

S11-0975-Rev. F, 16-May-11

www.vishay.com

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT

www.vishay.com/doc?91000

Si9243A

Vishay Siliconix

PIN CONFIGURATION

Narrow Body

SO Package

BAT

GND

ORDERING INFORMATION

Part Number

Si9243AEY-T1

Si9243AEY-T1-E3 (Lead (Pb)-free)

Temperature Range

- 40 to 125 °C

Top View

PIN DESCRIPTION

Pin Number

Symbol

GND

BAT

Description

K Receiver, Output

L Receiver, Output

Positive Power Supply

Transmit, Input

Ground Connection

K Transmit/Receive, Bidirectional

Battery Power Supply

L Transmit, Input

FUNCTIONAL DESCRIPTION

The Si9243AEY can be either in transmit or receive mode

and it contains over temperature, and short circuit V

BAT

fault

detection circuits.

output to protect the IC. The K pin will stay in high impedance

and RX

will follow the K pin. The fault will be reset when TX

is toggled high. RX

, RX

and TX pins have internal pull up

resistor to V

while K and L pins have internal pull down

resistors. When any one of the TX, V

BAT

or GND pins is open

the K output is off.

The voltage on the K and L pins are internally compared to

BAT/2

. If the voltage on the K or L pin is less than V

BAT/2

then

or RX

output will be "low". If the voltage on the K or L

pin is greater than V

BAT/2

then RX

or RX

output will be

"high".

When the TX pin is set "high" the Si9243AEY is in receive

mode and the internal MOSFET is turned off. RX

and RX

outputs will follow L and K inputs respectively.

In order to be in transmit mode, TX must be set "low". The TX

signal is then internally inverted and turns the MOSFET on,

causing the K pin to be "low". In transmit mode, the

processor monitors the RX

and TX. When the two mirror

each other there is no fault. In the event of over temperature,

or short circuit to V

BAT

, the Si9243AEY will turn off the K

www.vishay.com

Document Number: 70788

S11-0975-Rev. F, 16-May-11

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT

www.vishay.com/doc?91000

Si9243A

Vishay Siliconix

TEST CIRCUIT AND TIMING DIAGRAMS (TRANSMIT ONLY)

BAT

Si9243AEY

d(off)

d(on)

BAT

min

BAT

80 %

, V

20 %

GND

= 510

, C

= 10 nF, V

BAT

= 6 V to 18 V

= 1 kΩ, C

= 4.7 nF, V

BAT

= 16 V to 36 V

APPLICATIONS CIRCUIT

Diagnostic Tester

ECU

Si9243AEY

L-Line

I/Os

Microcontroller

510

0.4

K-Line

BAT

0.1 µF

50 V

0.1 µF

Bus

ECU = Electronic Control Unit

Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon

Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and

reliability data, see

www.vishay.com/ppg?70788.

Document Number: 70788

S11-0975-Rev. F, 16-May-11

www.vishay.com

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT

www.vishay.com/doc?91000

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