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SN74FB2040

Features: *Compatible With IEEE 1194.1-1991 (BTL) *TTL A Port, Backplane Transceiver Logic (BTL) B Port*Open-Collector B-Port Outputs Sink100 mA*Isolated Logic-Ground and Bus-Ground Pins Reduce Noise*BIAS VCC Pin Minimizes Signal Distortion During Live Insertion/Withdrawal*High-Impedance State Dur...

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SeekIC No. : 004498859 Detail

SN74FB2040: Features: *Compatible With IEEE 1194.1-1991 (BTL) *TTL A Port, Backplane Transceiver Logic (BTL) B Port*Open-Collector B-Port Outputs Sink100 mA*Isolated Logic-Ground and Bus-Ground Pins Reduce Nois...

SN74FB2040 Data Sheet

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Part Number:
SN74FB2040
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

*Compatible With IEEE 1194.1-1991 (BTL)
*TTL A Port, Backplane Transceiver Logic (BTL) B Port
*Open-Collector B-Port Outputs Sink100 mA
*Isolated Logic-Ground and Bus-Ground
  Pins Reduce Noise
*BIAS VCC  Pin Minimizes Signal Distortion
  During Live Insertion/Withdrawal
*High-Impedance State During Power Up
  and Power Down
*BIAS VCC Pin Minimizes Signal Distortion
  During Live Insertion or Withdrawal
*B-Port Biasing Network Preconditions the
  Connector and PC Trace to the BTL
  High-Level Voltage
*Packaged in Plastic Quad Flatpack


Pinout

Connection Diagram


Specifications

Supply voltage range, VCC.................................-0.5 V to 7V
Input voltage range, VI:Except B port ..............-1.2 V to 7V
                                      B port .......................-1.2 V to 3.5V
Voltage range applied to any B output in the disabled
   or power-off state,VO..................................-0.5 V to 3.5V
Voltage range applied to any output in the high state,
                                            VO : A port...........-0.5 V to VCC
Input clamp current, IIK:Except B port .......................-40mA
                                      B port ...................................-18mA
Current applied to any single output in the low state, IO:
                                      A port......................................48mA
                                      B port ...................................200mA
Package thermal impedance, JA................................44/W
Storage temperature range, Tstg....................-65 to 150  


Description

    The SN74FB2040 device is an 8-bit transceiver designed to translate signals between TTL and backplane transceiver logic (BTL) environments.

    The B port of the SN74FB2040 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 high and OEB is low, the B port is active and reflects the inverse of the data present at the A-input pins. When OEB is low, OEB is high, or VCC is less than 2.1 V, the B port is turned off.

    The A port of the SN74FB2040 operates at TTL-signal levels and has separate input and output pins. 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.

    Pins are allocated for the four-wire IEEE Std 1149.1 (JTAG) test bus. TMS and TCK are not connected and TDI is shorted to TDO.




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