Part # 74ACT1284 datasheet

Part Manufacturer: Fairchild Semiconductor

Fairchild Semiconductor

Part Description: 74ACT1284 IEEE 1284 Transceiver

Part Details:

74AC June 1996 Revised November 2000 T1284 I 74ACT1284 EEE 128 IEEE 1284 Transceiver General Description Features 4 T The 74ACT1284 contains four non-inverting bidirectional s TTL-compatible inputs buffers and three non-inverting buffers with open Drain out- r s A Ports have standard 4 mA totem pole outputs anscei puts and high drive capability on the B Ports. It is intended s Typical input hysteresis of 0.5V to provide a standard signaling method for a bi-directionparallel peripheral in an Extended Capabilities Port mode s B Port high drive source/sink capability of 14 mA (ECP). s Bidirectional non-inverting buffers ver The HD (active HIGH) input pin enables the B Ports to s Supports IEEE P1284 Level 1 and Level 2 signaling switch from open Drain to a high drive totem pole output, standards for bidirectional parallel communications capable of sourcing 14 mA on all seven buffers. The DIR between personal computers and printing peripherals input determines the direction of data flow on the bidirec- s B Port outputs in High Impedance mode during power tional buffers. DIR (active HIGH) enables data flow from down A Ports to B Ports. DIR (active LOW) enables data flow s Guaranteed 4000V minimum ESD protection from B Ports to A Ports. Ordering Code: Order Number Package Number Package Description 74ACT1284SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74ACT1284MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 74ACT1284MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code. Logic Symbol Connection Diagram Pin Descriptions Pin Names

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