The SN74FB2031 is a 9-bit transceiver 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 VCC is less than 2.1 V, the A outputs are in the high-impedance state.

Pins are allocated for the four-wire IEEE Std 1149.1 (JTAG) test bus, although currently there are no plans to release a JTAG-featured version. TMS and TCK are not connected and TDI is shorted to TDO.

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.

• 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
• High-Impedance State During Power Up and Power Down
• BIAS VCC Minimizes Signal Distortion During Live Insertion or Withdrawal
• 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

• TM4C1236H6PM - Tiva C Series Microcontroller
• TPS65100-Q1 - 汽车类 LCD 电源，具有升压转换器、双电荷泵、LDO 控制器和 VCOM 缓冲器
• LMZ12003 - 具有 20V 最大输入电压的 3A SIMPLE SWITCHER? 电源模块
• LM140L - 串联 3 端子负电压稳压器
• SN74AUP1G74 - 低功耗单路上升沿 D 类触发器
• MSP430F4260 - 16 位超低功耗 MCU、24kB 闪存、256B RAM、16 位 Σ-Δ A/D、12 位 D/A、LCD 驱动器
• SN74AVC32T245 - 具有可配置电压转换和 3 态输出的 32 位双电源总线收发器
• DM3725 - 数字媒体处理器
• DRV103 - 用于电磁、线圈、阀、发热器和灯的 PWM 低侧驱动器 (1.5A/3A)
• SN74LVC86A - 四路 2 输入异或门