DatasheetsPDF.com

SN74FB2040

Texas Instruments
Part Number SN74FB2040
Manufacturer Texas Instruments
Description 8-Bit TTL/BTL Transceiver
Published Dec 22, 2021
Detailed Description SN74FB2040 8-BIT TTL/BTL TRANSCEIVER SCBS173N – NOVEMBER 1991 – REVISED MARCH 2002 D Compatible With IEEE Std 1194.1-1...
Datasheet PDF File SN74FB2040 PDF File

SN74FB2040
SN74FB2040

Overview
SN74FB2040 8-BIT TTL/BTL TRANSCEIVER SCBS173N – NOVEMBER 1991 – REVISED MARCH 2002 D Compatible With IEEE Std 1194.
1-1991 (BTL) D TTL A Port, Backplane Transceiver Logic (BTL) B Port D Open-Collector B-Port Outputs Sink 100 mA D High-Impedance State During Power Up and Power Down D BIAS VCC Pin Minimizes Signal Distortion During Live Insertion or Withdrawal D B-Port Biasing Network Preconditions the Connector and PC Trace to the BTL High-Level Voltage RC PACKAGE (TOP VIEW) AO2 AI1 AO1 VCC BIAS VCC OEA OEB OEB TCK VCC TMS GND B1 GND AI2 AI3 AO3 GND AO4 GND AI4 AI5 AO5 GND AO6 GND 52 51 50 49 48 47 46 45 44 43 42 41 40 1 39 2 38 3 37 4 36 5 35 6 34 7 33 8 32 9 31 10 30 11 29 12 28 13 27 14 15 16 17 18 19 20 21 22 23 24 25 26 GND B2 GND B3 GND B4 GND B5 GND B6 GND B7 GND AI6 GND AO7 BG VCC AI7 BG GND AO8 TDO TDI VCC AI8 GND B8 description The SN74FB2040 is an 8-bit transceiver designed to translate signals between TTL and backplane transceiver logic (BTL) environments.
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 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 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.
The pins TMS, TCK, TDI, and TDO are nonfunctional, i.
e.
, not intended for use with the IEEE Std 1149.
1 (JTAG) test bus.
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.
Please be aware that an important notice concerning a...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)