L9637
Active
Design Win
Monolithic bus driver with ISO9141 Interface

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Product overview

Description

The L9637 is a monolithic integrated circuit containing standard ISO 9141 compatible interface functions.

  • All features

    • Defined OFF output status in undervoltage condition and VS or GND interruption
    • K output current limitation, typ. IK = 60 mA
    • High input impedance for open VS or GND connection
    • Controlled output slope for low EMI
    • Defined K output OFF for TX input open
    • Defined output ON status of LO or RX for open LI or K inputs
    • EMI robustness optimized
    • Integrated pull up resistors for TX, RX and LO
    • Overtemperature shut down function Selective to K-I/O pin
    • Bidirectional K-I/O pin with supply voltage dependent input threshold
    • Operating power supply voltage range 4.5 V ≤ VS ≤ 36 V (40 V for transients)
    • Standby mode with very low current consumption ISSB ≤ 1 mA @ VCC ≤ 0.5 V
    • Reverse supply (battery) protected down to VS ≥ -24 V
    • TTL compatible TX input
    • Wide input and output voltage range -24 V ≤ VK ≤ VS
    • Low quiescent current in off condition ISOFF = 120 µA

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L9637

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3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Longevity Commitment Longevity Starting Date Material Declaration**
E-L9637D
Active
SO-8 Automotive Ecopack2 - -
E-L9637D013TR
Active
SO-8 Automotive Ecopack2 - -

E-L9637D

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

E-L9637D013TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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Budgetary Price (US$)*/Qty
min
max
E-L9637D Available at 2 distributors

Distributor availability ofE-L9637D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 510 1 Buy from Distributor
Farnell Element14 EUROPE 2241 1 Buy from Distributor

Distributor reported inventory date: 2026-10-24

Distributor Name

DIGIKEY

Stock

510

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

2241

Min.Order

1

Distributor reported inventory date: 2026-10-24

Active
SO-8 Tube SINGAPORE EAR99 NEC -40 150
E-L9637D013TR Available at 3 distributors

Distributor availability ofE-L9637D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3262 1 Buy from Distributor
MOUSER WORLDWIDE 9 1 Buy from Distributor
Farnell Element14 EUROPE 1043 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

3262

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

9

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1043

Min.Order

1

Distributor reported inventory date: 2026-10-25

Active
SO-8 Tape and Reel SINGAPORE EAR99 NEC -40 150

E-L9637D Active

Part Number:

E-L9637D

Packing Type:

Tube

RoHS:

Country of Origin:

SINGAPORE

ECCN (EU):

NEC

Operating Temperature (°C)

Min:

-40

Max:

150

Distributor availability ofE-L9637D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 510 1 Buy from Distributor
Farnell Element14 EUROPE 2241 1 Buy from Distributor

Distributor reported inventory date: 2026-10-24

Distributor Name

DIGIKEY

Stock

510

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

2241

Min.Order

1

Distributor reported inventory date: 2026-10-24

E-L9637D013TR Active

Part Number:

E-L9637D013TR

Packing Type:

Tape and Reel

RoHS:

Country of Origin:

SINGAPORE

ECCN (EU):

NEC

Operating Temperature (°C)

Min:

-40

Max:

150

Distributor availability ofE-L9637D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3262 1 Buy from Distributor
MOUSER WORLDWIDE 9 1 Buy from Distributor
Farnell Element14 EUROPE 1043 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

3262

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

9

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1043

Min.Order

1

Distributor reported inventory date: 2026-10-25

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors