ISO9141 Interface

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

Key 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


0 下载




Description Version Size
DS0212 DS0212: Monolithic bus driver with ISO 9141 interface 8.0 201 KB


型号 Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
E-L9637D SO-8 Tube - - Active 0.71 1000 NEC EAR99 MALAYSIA MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY
E-L9637D013TR SO-8 Tape And Reel - - Active 0.71 1000 NEC EAR99 MALAYSIA MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY

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


型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
E-L9637D ActiveSO-8AutomotiveEcopack1 (*) 0
E-L9637D013TR ActiveSO-8AutomotiveEcopack2 (**) 0 0

(**) The Material Declaration forms available on 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.