74ACT1284SC

Number of Channels per Chip :
Input Level :
Output Level :
Output Type :
High Level Output Current :
Low Level Output Current :
Propagation Delay Time :
Supply Voltage - Max :
Supply Voltage - Min :
Packaging : Tube
Package / Case : SOIC-20
Maximum Operating Temperature : 85 C
Logic Type : Standard Transceivers
Logic Family : 74ACT


Features:

TTL-compatible inputs
A Ports have standard 4 mA totem pole outputs
Typical input hysteresis of 0.5V
B Port high drive source/sink capability of 14 mA
Bidirectional non-inverting buffers
Supports IEEE P1284 Level 1 and Level 2 signaling standards for bidirectional parallel communications between personal computers and printing peripherals
B Port outputs in High Impedance mode during power down
Guaranteed 4000V minimum ESD protection

Pinout




Specifications

Supply Voltage (V_CC)....................... −0.5V to +7.0V
DC Input Diode Current (I_IK)
    V_I = −0.5V ............................................... −20 mA
    V_I = VCC + 0.5V....................................... +20 mA
DC Input Voltage (V_I) ...............−0.5V to V_CC + 0.5V
DC Output Diode Current (I_OK)
    V_O = −0.5V..............................................  −20 mA
    V_O = V_CC + 0.5V +20 mA
DC Output Voltage (V_O)B Side...−0.5V to V_CC + 0.5V
DC Output Voltage (V_O)B Side...−0.5V to V_CC + 0.5V
DC Output Source
    or Sink Current (I_O).................................. ±50 mA
DC V_CC or Ground Current
    per Output Pin (I_CC or I_GND)..................... ±50 mA
Storage Temperature (T_STG)......... −65°C to +150°C


Description

The 74ACT1284SC contains four non-inverting bidirectional buffers and three non-inverting buffers with open Drain outputs and high drive capability on the B Ports. It is intended to provide a standard signaling method for a bi-direction parallel peripheral in an Extended Capabilities Port mode (ECP).

The HD (active HIGH) input pin of the 74ACT1284SC enables the B Ports to switch from open Drain to a high drive totem pole output, capable of sourcing 14 mA on all seven buffers. The DIR input determines the direction of data flow on the bidirectional buffers. DIR (active HIGH) enables data flow from A Ports to B Ports. DIR (active LOW) enables data flow from B Ports to A Ports.

Parameters:

Technical/Catalog Information	74ACT1284SC
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
Logic Type	IEEE STD 1284 Translation Transceiver
Mounting Type	Surface Mount
Package / Case	20-SOIC
Supply Voltage	4.5 V ~ 5.5 V
Packaging	Tube
Operating Temperature	-40°C ~ 85°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	74ACT1284SC 74ACT1284SC