DESCRIPTION
The FBL22040 is an 8-bit bidirectional BTL transceiver and is intended to provide the electrical interface to a high performance wired-OR bus. The FBL22040 is an inverting transceiver.

FEATURES
• Resistor version of FB2040
• 8-bit BTL transceivers
• Separate I/O on TTL A-port
• Inverting
• Drives heavily loaded backplanes with equivalent load impedances down to 10Ω.
• High drive 100mA BTL open collector drivers on B-port
• Allows incident wave switching in heavily loaded backplane buses
• Reduced BTL voltage swing produces less noise and reduces power consumption
• Built-in precision band-gap reference provides accurate receiver thresholds and improved noise immunity
• Compatible with IEEE Futurebus+ or proprietary BTL backplanes
• Controlled output ramp and multiple GND pins minimize ground bounce
• Each BTL driver has a dedicated Bus GND for a signal return
• Glitch-free power up/power down operation
• Low ICC current
• Tight output skew
• Supports live insertion
• Pins for the optional JTAG boundary scan function are provided
• High density packaging in plastic Quad Flat Pack
• Same pin and function as FBL2040 except for a 30Ω series termination resistor
• The A outputs include a series resistor of 30Ω making external terminating resistors unnecessary