Part # 74ACT1284 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: High speed IEEE1284 transceiver

Part Details:

74ACT1284 HIGH SPEED IEEE1284 TRANSCEIVER s HIGH SPEED:TPD = 6.5 ns (Max. 85°C) at VCC = 4.5V s LOW POWER DISSIPATION:ICC = 80 µA (MAX.) at VCC = 5.5V T = 85 °C s TTL COMPATIBLE INPUTSVIH = 2V (Min.) VIL = 0.8V (Max.) s OPERATING VOLTAGE RANGE: SOP TSSOP VCC (OPR.) = 4.5V to 5.5V s A Port have standard 4mA totem pole output s B Port high drive source/sink capability of ORDER CODES 14mA PACKAGE TUBE T & R s Support IEEE Std 1284-I (level 1 type) andIEEE Std 1284-II (level 2 type) for bidirectional SOP 74ACT1284M 74ACT1284MTR parallel communications between personal TSSOP 74ACT1284TTR computer and printing peripherals. PIN CONNECTION DESCRIPTIONThe 74ACT1284 contains four high-speed non-in-verting bidirectional buffers and three non-invert-ing buffers with open drain outputs fabricated insilicon gate C2MOS technology.It s intended to provide a standard signaling meth-od for a bidirection parallel peripheral in an Ex-tended Capabilities Port mode (ECP).The HD (active High) input pin enables the B portsto switch from Open Drain to a high drive totempole output, capable of sourcing 14mA on all sev-en buffers. The DIR input determines the directionof data flow on the bidirectional buffers.DIR (active High) enables data flow from A Port toB Port. DIR (active Low) enables data flow from BPort to A Port.ESD protection is greater than 2000V per Method3015.7 of MIL-STD-883B. It s available in thecommercial temperature ranges. Obsolete Product(s) - Obsolete Product(s) July 2003 1/11 74ACT1284 LOGIC DIAGRAM PIN DESCRIPTION PIN N. SYMBOL NAME AND FUNCTION 1 - 4 A1 - A4 Side A Input or Output 5, 6 GND Ground 7 - 9 A5 - A7 Side A Input 10 DIR Direction Control Input

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74ACT1284.pdf Datasheet