Features: TTL-compatible inputsA Ports have standard 4 mA totem pole outputsTypical input hysteresis of 0.5VB Port high drive source/sink capability of 14 mABidirectional non-inverting buffersSupports IEEE P1284 Level 1 and Level 2 signaling standards for bidirectional parallel communications betw...
74ACT1284: Features: TTL-compatible inputsA Ports have standard 4 mA totem pole outputsTypical input hysteresis of 0.5VB Port high drive source/sink capability of 14 mABidirectional non-inverting buffersSuppor...
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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
Supply Voltage (VCC) | −0.5V to +7.0V |
DC Input Diode Current (IIK) | |
VI = −0.5V | −20 mA |
VI = VCC + 0.5V | +20 mA |
DC Input Voltage (VI) A Side | −0.5V to VCC + 0.5V |
DC Input Voltage (VI) B Side | −2V to +7V |
DC Output Diode Current (IOK) | |
VO = −0.5V | −20 mA |
VO = VCC + 0.5V | +20 mA |
DC Output Voltage (VO) A Side | −0.5V to VCC + 0.5V |
DC Output Voltage (VO) B Side | −2V to +7V |
DC Output Source | |
or Sink Current (IO) | ± 50 mA |
DC VCC or Ground Current | |
per Output Pin (ICC or IGND) | ± 50 mA |
Storage Temperature (TSTG) | −65 to +150 |
Product | Product status | Eco Status | Pricing* | Package type | Leads | Packing method | Package Drawing | Package Marking Convention** |
---|---|---|---|---|---|---|---|---|
74ACT1284MSA | Full Production | RoHS Compliant | $0.90 | SSOP | 20 | RAIL | Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: ACT1284 | |
74ACT1284MSAX | Full Production | RoHS Compliant | $0.90 | SSOP | 20 | TAPE REEL | Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: ACT1284 | |
74ACT1284MTCX | Full Production | RoHS Compliant | $0.52 | TSSOP | 20 | TAPE REEL | Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: ACT1284 | |
74ACT1284SC | Full Production | RoHS Compliant | $0.52 | SOIC-Wide | 20 | RAIL | Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: 74ACT1284 | |
74ACT1284SCX | Full Production | RoHS Compliant | $0.52 | SOIC-Wide | 20 | TAPE REEL | Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: 74ACT1284 |
* Fairchild 1,000 piece Budgetary Pricing |
** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples |
Package marking information for product 74ACT1284 is available. Click here for more information . |
The 74ACT1284 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 74ACT1284 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.