74F3893 Datasheet | Philips Semiconductors

FEATURES - Quad backplane transceiver - Drives heavily loaded backplanes with equivalent load - Futurebus drivers sink 100m A - Reduced voltage swing (1 volt) produces less noise and reduces power consumption - High speed operation enhances performance of backplane buses and facilitates incident wave switching - patible with IEEE 896 and IEEE 1194.1 Futurebus Standards - Built- in precision band- gap (BG) reference provides accurate receiver thresholds and improved noise immunity - Glitch- free power up/power down operation on all outputs impedances down to 10 ohms much less for BTL, so is its receiver threshold region, therefore noise margins are excellent. BTL offers low power consumption, low ground bounce, EMI and crosstalk, low capacitive loading, superior noise margin and low propagation delays. This results in a high bandwidth, reliable backplane. - Pin and function patible with NSC DS3893 DESCRIPTION The 74F3893 has four TTL outputs (Rn) on the receiver side with a mon receiver enable input (RE). It has four data inputs (Dn) which are also TTL. These data inputs are NANDed with the data enable input (DE). The four I/O pins (bus side) are futurebus patible, sink a minimum of 100m A, and are designed to drive heavily loaded backplanes with load impedances as low as 10 ohms. All outputs are designed to be glitch- free during power up and down. TYPE TYPICAL PROPAGATION DELAY 3.0ns TYPICAL SUPPLY CURRENT( TOTAL) 55m A The 74F3893 is a quad backplane transceivers and is intended to be used in very high speed bus systems. The 74F3893 interfaces to ‘Backplane Transceiver Logic’ (BTL). BTL features a reduced (1V to 2V) voltage swing for lower power consumption and a series diode on the drivers to reduce capacitive loading (< 5p F). Incident wave switching is employed, therefore BTL propagation delays are short. Although the voltage swing is ORDERING INFORMATION DESCRIPTION ORDER CODE MERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F3893A PKG DWG # 20-pin...