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SI9243A_11

更新时间：2025-07-10 12:13:08

品牌：VISHAY

描述：Single-Ended Bus Transceiver

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SI9243A_11 概述

Single-Ended Bus Transceiver 单端总线收发器

SI9243A_11 数据手册

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Si9243A

Vishay Siliconix

Single-Ended Bus Transceiver

DESCRIPTION

FEATURES

•

Operating Power Supply Range

6 V  V_BAT 36 V

Reverse Battery Protection Down to V_BAT- 24 V

Standby Mode With Very Low Current Consumption

I_BAT(SB)= 1 µA at V_DD= 0.5 V

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_BATvoltage.

•

Low Quiescent Current in OFF Condition

I_BAT= 120 µA and I_DD 10 A

ISO 9141 Compatible

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

load.

•

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

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.

2 kV ESD

Typical Transmit Speeds of 200 kBaud

PIN CONFIGURATION AND FUNCTIONAL BLOCK DIAGRAM

GND

DD BAT

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

STATE

VARIABLE

OUTPUT

TABLE

INPUTS

RX_KRX_L

Comments

Power On

A = 1

A = 0

Over Temp TX

Short Circuit

HiZ

Over Temp

B = 1

B = 0

Power On

Short Circuit

Receive Mode

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

Limit

- 24 to 45

Unit

Voltages Referenced to Ground

Voltage On V_BAT

- 16 to (V_BAT+ 1)

Voltage K, L

Voltage Difference V_{(VBAT, K, L)}

Voltage On Any Pin (Except V_BAT, K, L) or Max. Current

Voltage on V_DD

- 0.3 V to (V_DD+ 0.3 V) or 10

K Pin Only, Short Circuit Duration (to V_BATor GND)

Operating Temperature (T_A)

Continuous

- 40 to 125

- 55 to 150

125

°C

Junction and Storage Temperature

Thermal Impedance (_JA

)

°C/W

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

Limit

Unit

Voltages Referenced to Ground

V_DD

4.5 to 5.5

V_BAT

6 to 36

K, L

0 to V_DD

Digital Inputs

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

Test Conditions Unless Specified

_DD= 4.5 V to 5.5 V

Limits

- 40 to 125 °C

Parameter

Symbol

Unit

Temp.^a

Min.^b

Typ.^c

Max.^b

V_BAT= 6 V to 36 V

Transmitter and Logic Levels

TX Input Low Voltage

V_ILT

V_IHT

C_INT

R_TX

Full

1.5

TX Input High Voltage

3.5

TX Input Capacitance^d

TX Input Pull-up Resistance

V_DD= 5.5 V, TX = 1.5 V, 3.5 V

k

K Transmit

R_L= 510  5 %, V_BAT= 6 to 18

R_L= 1 k 5 %, V_BAT= 16 to 36

R_L= 510  5 %, V_BAT= 4.5

R_L= 510  5 %, V_BAT= 4.5 to 18

R_L= 1 k 5 %, V_BAT= 16 to 36

See Test Circuit

0.2 V_BAT

1.2

Full

V_OLK

K Output Low Voltage

0.95 V_BAT

V_OHK

K Output High Voltage

t_r, _tf

Rsi

C_O

K Rise, Fall Times

9.6

110

µs



K Output Sink Resistance

TX = 0 V

K Output Capacitance^d

Receiver

V_IH

V_HYS

I_IH

0.65 V_BAT

L and K Input High Voltage

L and K Input Hysteresis^{c, d}

L and K Input Currents

Full

0.05 V_BAT

_IH= V_BAT

0.4

µA

TX = 4

V_ILK, V_ILL= 0.35 V_BAT

I_OLR= 1 mA

RX_Land RX_KOutput Low Voltage

RX_Land RX_KPull-up Resistance

V_OLR

R_RX

Full

k

R_L= 510  5 %, V_BAT= 6 V to 18 V

C_L= 10 nF, See Test Circuit

RX_KTurn On Delay

RX_KTurn Off Delay

t_d(on)

R_L= 1 k 5 %, V_BAT= 16 V to 36 V

Full

C_L= 4.7 nF, See Test Circuit

µs

R_L= 510  5 %, V_BAT= 6 V to 18 V

C_L= 10 nF, See Test Circuit

t_d(off)

R_L= 1 k 5 %, V_BAT= 16 V to 36 V

C_L= 4.7 nF, See Test Circuit

Supplies

I_BAT(on)

I_BAT(off)

TX = 0 V, V_BAT 16 V

Bat Supply Current On

Full

1.2

µA

V_IHT V_TX, V_IHK V_K, V_IHL V_L

V_BAT 12 V

Bat Supply Current Off

120

220

I_BAT(SB)

I_DD(on)

V_DD 0.5 V, V_BAT 12 V

V_DD 5.5 V, TX = 0 V

Bat Supply Current Standby

Logic Supply Current On

Full

< 1

1.4

2.3

µA

V_IHT V_TX, V_IHK V_K, V_IHL V_L

V_BAT 12 V

I_DD(off)

Logic Supply Current Off

Full

Miscellaneous

BR_T

BR_R

R_L= 510 , C_L= 10 nF

TX Transmit Baud Rate

Full

10.4

kBaud

RX_Land RX_KReceive Baud Rate^c

Transmission Frequency

TX Minimum Pulse Width^{d, e}

Over Temperature Shutdown^d

Temperature Shutdown Hysteresis^c

6 V < V_BAT< 16 V, C_RX= 20 pF

200

f_K-RXK6 V < V_BAT< 16 V, R_K= 510 , C_K 1.3 nF

kHz

µs

t_TX

T_SHUT

T_HYST

Temperature Rising

160

180

°C

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

ORDERING INFORMATION

Part Number

Temperature Range

Si9243AEY-T1

BAT

- 40 to 125 °C

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

GND

Top View

PIN DESCRIPTION

Pin Number

Symbol

Description

RX_K

K Receiver, Output

L Receiver, Output

RX_L

V_DD

Positive Power Supply

Transmit, Input

GND

Ground Connection

K Transmit/Receive, Bidirectional

Battery Power Supply

L Transmit, Input

V_BAT

FUNCTIONAL DESCRIPTION

The Si9243AEY can be either in transmit or receive mode

and it contains over temperature, and short circuit V_BATfault

detection circuits.

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

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

is toggled high. RX_K, RX_Land TX pins have internal pull up

resistor to V_DDwhile K and L pins have internal pull down

resistors. When any one of the TX, V_BATor GND pins is open

the K output is off.

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

V_BAT/2. If the voltage on the K or L pin is less than V_BAT/2then

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

pin is greater than V_BAT/2then RX_Kor RX_Loutput will be

"high".

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

mode and the internal MOSFET is turned off. RX_Land RX_K

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_Kand 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)

min

BAT

80 %

20 %

V , V

GND

= 510 Ω, C = 10 nF, V

= 6 V to 18 V

= 16 V to 36 V

BAT

= 1 kΩ, C = 4.7 nF, V

APPLICATIONS CIRCUIT

Diagnostic Tester

ECU

Si9243AEY

L-Line

510 Ω

Microcontroller

I/Os

0.4 Ω

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

Package Information

Vishay Siliconix

SOIC (NARROW): 8-LEAD

JEDEC Part Number: MS-012

h x 45

0.25 mm (Gage Plane)

All Leads

0.101 mm

0.004"

MILLIMETERS

Max

INCHES

DIM

Min

Max

1.35

0.10

0.35

0.19

4.80

3.80

1.75

0.20

0.51

0.25

5.00

4.00

0.053

0.004

0.014

0.0075

0.189

0.150

0.069

0.008

0.020

0.010

0.196

0.157

A₁

1.27 BSC

0.050 BSC

5.80

0.25

0.50

0°

6.20

0.50

0.93

8°

0.228

0.010

0.020

0°

0.244

0.020

0.037

8°

0.44

0.64

0.018

0.026

ECN: C-06527-Rev. I, 11-Sep-06

DWG: 5498

Document Number: 71192

11-Sep-06

www.vishay.com

Legal Disclaimer Notice

Vishay

Disclaimer

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE

RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,

“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other

disclosure relating to any product.

Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or

the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all

liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,

consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular

purpose, non-infringement and merchantability.

Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical

requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements

about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular

product with the properties described in the product specification is suitable for use in a particular application. Parameters

provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All

operating parameters, including typical parameters, must be validated for each customer application by the customer’s

technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,

including but not limited to the warranty expressed therein.

Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining

applications or for any other application in which the failure of the Vishay product could result in personal injury or death.

Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree

to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and

damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay

or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to

obtain written terms and conditions regarding products designed for such applications.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by

any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.

Document Number: 91000

Revision: 11-Mar-11

www.vishay.com

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