1. General description
The 74ABT16245B is a 16-bit transceiver with 3-state outputs. The device can be used as two 8-bit
transceivers or one 16-bit transceiver. The device features two output enables (1OE and 2OE)
each controlling eight outputs, and two send/receive (1DIR and 2DIR) inputs for direction control.
A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. This device is fully
specified for partial power down applications using IOFF. The IOFF circuitry disables the output,
preventing the potentially damaging backflow current through the device when it is powered down.
2. Features and benefits
• Supply voltage range from 4.5 to 5.5 V
• BiCMOS high speed and output drive
• Direct interface with TTL levels
• 16-bit bidirectional bus interface
• Multiple VCC and GND pins minimize switching noise
• Power-up 3-state
• 3-state buffers
• Output capability: +64 mA and -32 mA
• Live insertion/extraction permitted
• IOFF circuitry provides partial Power-down mode operation
• Latch-up performance exceeds 500 mA per JESD 78 Class II Level B
• ESD protection:
• HBM JESD22-A114E exceeds 2000 V
• CDM JESD22-C101C exceeds 1000 V
• Specified from -40 °C to 85 °C