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FBL22041 Datasheet(PDF) 2 Page - NXP Semiconductors |
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FBL22041 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 14 page Philips Semiconductors Product specification FBL22041 3.3V BTL 7-bit Futurebus+ transceiver (standard A-port) 2 1998 Aug 12 853-2039 19863 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 Ω. • 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 I CC current • Tight output skew • Supports live insertion • Pins for the optional JTAG boundary scan function are provided • High density packaging in plastic Quad Flatpack • 5V compatible I/O on A-port • The A port includes a series resistor of 30Ω making external terminating resistors unnecessary DESCRIPTION The FBL22041 is a 7-bit bidirectional BTL transceiver and is intended to provide the electrical interface to a high performance wired-OR bus. The FBL22041 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. The FBL22041 is designed with a 30 Ω series resistance in both the HIGH and LOW states of the output. The FBL22041 is pin and function compatible with FB2041 but operates at a 3.3V supply voltage, greatly reducing power consumption. QUICK REFERENCE DATA SYMBOL PARAMETER TYPICAL UNIT tPLH Propagation delay 4.1 ns tPHL AIn to Bn 3.6 ns tPLH Propagation delay 5.2 ns tPHL Bn to AOn 5.1 ns COB Output capacitance (B0 - B6 only) 6 pF IOL Output current (B0 - B6 only) 100 mA Standby 6.0 I Supply Current AIn to Bn (outputs Low or High) 5.1 mA ICC Supply Current Bn to AOn (outputs Low) 13.4 mA Bn to AOn (outputs High) 10.6 ORDERING INFORMATION PACKAGE COMMERCIAL RANGE VCC = 3.3V±10%; Tamb = 0 to +70°C DWG No. 52-pin Plastic Quad Flatpack FBL22041BB SOT379-1 |
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