74ALS620A-1

INTEGRATED CIRCUITS 74ALS620A/74ALS620A–1 74ALS623A/74ALS623A–1 Transceivers Product specification IC05 Data Handbook 1991 Feb 08 Philips Semiconductors Philips Semiconductors Product specification Transceivers 74ALS620A/74ALS620A-1 74ALS623A/74ALS623A-1 74ALS620A/74ALS620A-1 Octal bus transceiver, inverting (3-State) 74ALS623A/74ALS623A-1 Octal bus transceiver, non-inverting (3-State) FEATURES Octal bidirectional bus interface 3-State buffer outputs sink 24mA and source 15mA The -1 version sinks 48mA IOL within the +5% VCC range TYPE 74ALS620A/620A-1 74ALS623A/623A-1 TYPICAL PROPAGATION DELAY 4.0ns 4.0ns TYPICAL SUPPLY CURRENT (TOTAL) 33mA 38mA DESCRIPTION The 74ALS620A and 74ALS623A are octal transceiver featuring 3-State bus compatible outputs in both transmit and receive directions. The 74ALS620A is an inverting version of the 74ALS623A. The outputs are capable of sinking 24mA and sourcing up to 15mA, providing very good capacitive drive characteristics. The outputs for the 74ALS620A-1 and 74ALS623A are capable of sinking up to 48mA when within the ±5% VCC range. These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control function implementation allows for maximum flexibility in timing. These devices allow data transmission from the A bus to the B bus or from B bus to A bus, depending on the logic levels at the enable inputs (OEBA and OEAB). The enable inputs can be used to disable the device so that the ...