DP8303N Am 7303 Am 8303 Am 8303
CHARACTERISTICS
• 8-bit bidirectional data flow reduces system package count
• 3-state inputs/outputs for interfacing with bus-oriented systems
• PNP inputs reduce input loading
• Vcc -1.1SV VoH interfaces with TTL, MOS and CMOS
• 48mA, 300pF bus drive capability
• Am73/8303 inverting transceivers
• Am73/8304B noninverting transceivers
• Transmit/Receive and Chip Disable simplify contrai logie
• 20-pin ceramic and molded DIP package
• Low power - 8mA per bidirectional bit
• Advanced Schottky processing
• Bus port stays in hi-impedance state during power up/down
• 100% produci assurance screeninglo MIL-STD-883 requirements
FUNCTIONAL DESCRIPTION
The DP8303N Am73/8303 and Am73/8304B are 8-bit 3-State Schottky transceivers. They previde bidirectional drive for bus-oriented microprocessor and digitai communications systems. Straight through bidirectional transceivers are featured, with 16mA drive capability on the A ports and 48mA bus drive capability on the B ports. PNP inputs are incorporateci to reduce input loading.
One input, TransmiVReceive determines the direction of logie signals through the bidirectional transceiver. The Chip Disable input disables both A and B ports by placing them in a 3-state condition. Chip Disable is functionally the same as an active LOW chip select.
The output high voltage (VoH) is specified at Vcc -1.1SV minimum to allow interfacing with MOS, CMOS, TTL, ROM, RAM, or microprocessors.
