1. General description

The PDI1284P11 parallel interface chip is designed to provide an asynchronous, 8-bit, bidirectional,

parallel interface for personal computers. The PDI1284P11 includes all 19 signal lines defined by

the IEEE 1284 interface specification for Byte, Nibble, EPP, and ECP modes. The PDI1284P11 is

designed for hosts or peripherals operating at 3.3 V to interface 3.3 V or 5.0 V devices.

The eight transceiver pairs (A/B 1 to 8) allow data transmission from the A-bus to the B-bus, or

from the B-bus to the A-bus, depending on the state of the direction pin DIR.

The B-bus and the Y9 to Y13 lines have either totem pole or resistor pull-up outputs, depending on

the state of the high drive enable pin HD. The A-bus has only totem pole style outputs. All inputs

are TTL compatible with at least 400 mV of input hysteresis at VCC = 3.3 V.

2. Features and benefits

• Asynchronous operation

• 8-bit transceivers

• Six additional buffer/driver lines peripheral to cable

• Five additional control lines from cable

• 5 V tolerant

• ESD protection:

• HBM JESD22-A114E exceeds 2000 V

• MM JESD22-A115-A exceeds 200 V

• Latch-up current protection exceeds 500 mA per JEDEC Std 19

• Input hysteresis

• Low-noise operation

• IEEE 1284 compliant level 1 and 2

• Overvoltage protection on B/Y side for off-state

• A side 3-state option

• B side active or resistive pull-up option

• Cable side supply voltage for 5 V or 3 V operation

PDI1284P11属于集成电路（IC） > 专用。安世半导体(中国)有限公司制造生产的PDI1284P11专用该系列产品可提供所需的功能，用以将信息源/信宿连到各种复杂或范围狭窄应用中的传感器、变送器、致动器、传输介质或其他此类端点。例如，汽车安全气囊驱动器、车身控制和信息娱乐总线、自适应电缆均衡器、智能卡等等。