Product details

Technology family FB Applications GTL Rating Catalog Operating temperature range (°C) 0 to 70
Technology family FB Applications GTL Rating Catalog Operating temperature range (°C) 0 to 70
HLQFP (PCA) 100 256 mm² 16 x 16
  • Compatible With IEEE Std 1194.1-1991 (BTL)
  • TTL A Port, Backplane Transceiver Logic (BTL) B\ Port
  • Open-Collector B\-Port Outputs Sink 100 mA
  • BIAS VCC Minimizes Signal Distortion During Live Insertion or Withdrawal
  • High-Impedance State During Power Up and Power Down
  • B\-Port Biasing Network Preconditions the Connector and PC Trace to the BTL High-Level Voltage
  • TTL-Input Structures Incorporate Active Clamping to Aid in Line Termination

  • Compatible With IEEE Std 1194.1-1991 (BTL)
  • TTL A Port, Backplane Transceiver Logic (BTL) B\ Port
  • Open-Collector B\-Port Outputs Sink 100 mA
  • BIAS VCC Minimizes Signal Distortion During Live Insertion or Withdrawal
  • High-Impedance State During Power Up and Power Down
  • B\-Port Biasing Network Preconditions the Connector and PC Trace to the BTL High-Level Voltage
  • TTL-Input Structures Incorporate Active Clamping to Aid in Line Termination

The SN74FB1650 contains two 9-bit transceivers designed to translate signals between TTL and backplane transceiver-logic (BTL) environments. The device is designed specifically to be compatible with IEEE Std 1194.1-1991.

The B\ port operates at BTL-signal levels. The open-collector B\ ports are specified to sink 100 mA. Two output enables (OEB and OEB\) are provided for the B\ outputs. When OEB is low, OEB\ is high, or VCC is less than 2.1 V, the B\ port is turned off.

The A port operates at TTL-signal levels. The A outputs reflect the inverse of the data at the B\ port when the A-port output enable (OEA) is high. When OEA is low or when VCC is less than 2.1 V, the A outputs are in the high-impedance state.

BIAS VCC establishes a voltage between 1.62 V and 2.1 V on the BTL outputs when VCC is not connected.

BG VCC and BG GND are the supply inputs for the bias generator.

The SN74FB1650 contains two 9-bit transceivers designed to translate signals between TTL and backplane transceiver-logic (BTL) environments. The device is designed specifically to be compatible with IEEE Std 1194.1-1991.

The B\ port operates at BTL-signal levels. The open-collector B\ ports are specified to sink 100 mA. Two output enables (OEB and OEB\) are provided for the B\ outputs. When OEB is low, OEB\ is high, or VCC is less than 2.1 V, the B\ port is turned off.

The A port operates at TTL-signal levels. The A outputs reflect the inverse of the data at the B\ port when the A-port output enable (OEA) is high. When OEA is low or when VCC is less than 2.1 V, the A outputs are in the high-impedance state.

BIAS VCC establishes a voltage between 1.62 V and 2.1 V on the BTL outputs when VCC is not connected.

BG VCC and BG GND are the supply inputs for the bias generator.

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Technical documentation

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Type Title Date
* Data sheet SN74FB1650 datasheet (Rev. O) 10 Mar 2004
Application note Schematic Checklist - A Guide to Designing with Auto-Bidirectional Translators PDF | HTML 12 Jul 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices 10 May 2002
Selection guide Advanced Bus Interface Logic Selection Guide 09 Jan 2001
Application note GTL/BTL: A Low-Swing Solution for High-Speed Digital Logic (Rev. A) 01 Mar 1997
Application note Next-Generation BTL/Futurebus Transceivers Allow Single-Sided SMT Manufacturing (Rev. C) 01 Mar 1997
Application note Understanding Advanced Bus-Interface Products Design Guide 01 May 1996

Design & development

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Simulation model

SN74FB1650 IBIS Model (Rev. B)

SCBM009B.ZIP (11 KB) - IBIS Model
Package Pins CAD symbols, footprints & 3D models
HLQFP (PCA) 100 Ultra Librarian

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