Select site:
- English
74LVC544A
General description
The 74LVC544A is a high-performance, low-power, low-voltage, Si-gate CMOS device superior to most advanced CMOS compatible TTL families.
The 74LVC544A is an octal registered inverting transceiver containing two sets of D-type latches for temporary storage of the data flow in either direction. Separate latch enable inputs (LEAB and LEBA) and output enable inputs (OEAB and OEBA) are provided for each register to permit independent control of inputting and outputting in either direction of the data flow.
The 74LVC544A contains eight D-type latches, with separate inputs and controls for each set. For data flow from pins A to B, for example, the A to B enable input (pin EAB) must be LOW in order to enter data from pins A0 to A7 or take data from pins B0 to B7. With pin EAB LOW, a LOW signal on the A to B latch enable input (pin LEAB) makes the A to B latches transparent; a subsequent LOW-to-HIGH transition on pin LEAB puts the A data into the latches where it is stored and the B outputs no longer change with the A inputs. With pins EAB and OEAB both LOW, the 3-state B output buffers are active and display the data present at the outputs of the A latches.
Features
- 5 V tolerant inputs/outputs for interfacing with 5 V logic
- Supply voltage range from 1.2 V to 3.6 V
- Complies with JEDEC standard JESD8-B/JESD36
- CMOS low-power consumption
- Direct interface with TTL levels
- 8-bit octal transceiver with D-type latch
- Back-to-back registers for storage
- Separate controls for data flow in each direction
- Supports partial power-down applications; inputs/outputs are high-impedance when VCC = 0 V
- ESD protection:
- HBM EIA/JESD22-A114-B exceeds 2000 V
- MM EIA/JESD22-A115-A exceeds 200 V.
- Specified from -40 Cel to +85 Cel and -40 Cel to +125 Cel.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74LVC544AD | 74LVC544AD | 9352 505 40112 | Volume production | SOT137-1
(SO24) | Tube | Standard Marking | 74LVC544AD
| week 13, 2005 |
| 74LVC544AD | 74LVC544AD-T | 9352 505 40118 | Volume production | SOT137-1
(SO24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC544AD
| week 13, 2005 |
| 74LVC544ADB | 74LVC544ADB | 9352 505 60112 | Volume production | SOT340-1
(SSOP24) | Tube | Standard Marking | 74LVC544ADB
| week 12, 2005 |
| 74LVC544ADB | 74LVC544ADB-T | 9352 505 60118 | Volume production | SOT340-1
(SSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC544ADB
| week 12, 2005 |
| 74LVC544APW | 74LVC544APW | 9352 505 70112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | 74LVC544APW
| week 10, 2005 |
| 74LVC544APW | 74LVC544APW-T | 9352 505 70118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC544APW
| week 10, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74LVC544AD | 9352 505 40112 | 0.5900 | not available | |||||
| 74LVC544AD | 9352 505 40118 | 0.5900 | Order samples | |||||
| 74LVC544ADB | 9352 505 60112 | 0.5900 | not available | |||||
| 74LVC544ADB | 9352 505 60118 | 0.5900 | Order samples | |||||
| 74LVC544APW | 9352 505 70112 | 0.5900 | not available | |||||
| 74LVC544APW | 9352 505 70118 | 0.5900 | 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 |
|---|---|---|---|---|---|---|---|
| 74LVC544AD | SOT137-1
(SO24) | 3.3V Latched Transceiver; Inverting (3-State) | 4.0@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC544ADB | SOT340-1
(SSOP24) | 3.3V Latched Transceiver; Inverting (3-State) | 4.0@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC544APW | SOT355-1
(TSSOP24) | 3.3V Latched Transceiver; Inverting (3-State) | 4.0@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
Similar products
74LVC544A 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.
Disclaimer
The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.
The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.
As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.
- http://www.philips.semiconductors.com use http://www.nxp.com
- http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
- sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)
The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-
If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.