描述 Description

DESCRIPTION
The FB2041 is a 7-bit bidirectional BTL transceiver and is intended to provide the electrical interface to a high performance wired-OR bus. The FB2041 is an inverting transceiver.
The B-port drivers are Low-capacitance open collectors with controlled ramp and are designed to sink 100mA. Precision band gap references on the B-port insure very good noise margins by limiting the switching threshold to a narrow region centered at 1.55V.FEATURES
?7-bit BTL transceiver
?Separate I/O on TTL A-port
?Inverting
?Three separate pairs of driver enables in a 1 bit, 3 bit, 3 bit arrangement
?Drives heavily loaded backplanes with equivalent load impedances down to 10?.
?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 ICCcurrent
?Tight output skew
?Supports live insertion
?Pins for the optional JTAG boundary scan function are provided
?High density packaging in plastic Quad Flatpack

特性 Features

?7-bit BTL transceiver
?Separate I/O on TTL A-port
?Inverting
?Three separate pairs of driver enables in a 1 bit, 3 bit, 3 bit arrangement
?Drives heavily loaded backplanes with equivalent load impedances down to 10?.
?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 ICCcurrent
?Tight output skew
?Supports live insertion
?Pins for the optional JTAG boundary scan function are provided
?High density packaging in plastic Quad Flatpack