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74LVC1284
General description
The 74LVC1284 parallel interface chip is designed to provide an asynchronous, 4-bit, bi-directional, parallel printer interface for personal computers. Three additional lines are included to provide handshaking signals between the host and the peripheral. The part is designed to match IEEE 1284 standard.
The 4 transceiver pins (A/B 1-4) 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 Y5-Y7 lines have totem pole or open drain style outputs depending on the state of the high drive enable pin HD. The A bus only has totem pole style outputs. All inputs are TTL compatible with at least 300mV of input hysteresis at VCC = 3.3V.
Features
- Asynchronous operation
- 4-Bit transceivers
- 3 additional buffer/driver lines
- TTL compatible inputs
- ESD protection exceeds 1000V per MIL STD 883 Method 3015 and 200V per Machine Model
- Input Hysteresis
- Low Noise Operation
- Center Pin VCC & GND
- IEEE 1284 Compliant Level 1 & 2
- Overvoltage Protection on B side
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74LVC1284D | 74LVC1284D | 9352 136 50112 | Volume production | SOT163-1
(SO20) | Tube | Standard Marking | 74LVC1284D
| week 30, 2004 |
| 74LVC1284D | 74LVC1284D-T | 9352 136 50118 | Volume production | SOT163-1
(SO20) | Tape reel smd | Standard Marking | 74LVC1284D
| week 30, 2004 |
| 74LVC1284DB | 74LVC1284DB | 9352 136 60112 | Volume production | SOT339-1
(SSOP20) | Tube | Standard Marking | 74LVC1284DB
| week 13, 2005 |
| 74LVC1284DB | 74LVC1284DB-T | 9352 136 60118 | Volume production | SOT339-1
(SSOP20) | Reel Pack, SMD, 13" | Standard Marking | 74LVC1284DB
| week 13, 2005 |
| 74LVC1284PW | 74LVC1284PW | 9352 136 70112 | Volume production | SOT360-1
(TSSOP20) | Tube | Standard Marking | 74LVC1284PW
| week 7, 2005 |
| 74LVC1284PW | 74LVC1284PW-T | 9352 136 70118 | Volume production | SOT360-1
(TSSOP20) | Reel Pack, SMD, 13" | Standard Marking | 74LVC1284PW
| week 7, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74LVC1284D | 9352 136 50112 | 0.6300 | NA | DIGI-KEY CORPORATION | 1,470 | 8/28/2008 | Buy online | not available |
| 74LVC1284D | 9352 136 50118 | 0.6300 | Order samples | |||||
| 74LVC1284DB | 9352 136 60112 | 0.6300 | NA | DIGI-KEY CORPORATION | 924 | 8/28/2008 | Buy online | not available |
| 74LVC1284DB | 9352 136 60118 | 0.6300 | Order samples | |||||
| 74LVC1284PW | 9352 136 70112 | 0.6300 | NA | DIGI-KEY CORPORATION | 1,429 | 8/28/2008 | Buy online | Order samples |
| 74LVC1284PW | 9352 136 70118 | 0.6300 | Order samples |
Technical documents
Application Notes
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| 74LVC1284D | SOT163-1
(SO20) | 3.3V Parallel Printer Interface Transceiver/Buffer | 15@3.3V | 3.0-3.6 | Low Power or Battery Applications | TTL | +/- 14 mA |
| 74LVC1284DB | SOT339-1
(SSOP20) | 3.3V Parallel Printer Interface Transceiver/Buffer | 15@3.3V | 3.0-3.6 | Low Power or Battery Applications | TTL | +/- 14 mA |
| 74LVC1284PW | SOT360-1
(TSSOP20) | 3.3V Parallel Printer Interface Transceiver/Buffer | 15@3.3V | 3.0-3.6 | Low Power or Battery Applications | TTL | +/- 14 mA |
Similar products
74LVC1284 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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