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74LVC543A
General description
The 74LVC543A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families.
The 74LVC543A is an octal registered transceiver containing two sets of D-type latches for temporary storage of the data flow in either direction. Separate latch enable inputs (pins LEAB and LEBA ) and output enable inputs (pins OEAB and OEBA ) are provided for each register to permit independent control of inputting and outputting in either direction of the data flow.
The 74LVC543A 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, as indicated in the ?Function table?. 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
- 3-state non-inverting outputs for bus oriented applications
- 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 |
|---|---|---|---|---|---|---|---|---|
| 74LVC543ABQ | 9352 753 78118 | Volume production | SOT815-1
(DHVQFN24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC543ABQ
| ||
| 74LVC543AD | 74LVC543AD | 9352 458 50112 | Volume production | SOT137-1
(SO24) | Tube | Standard Marking | 74LVC543AD
| week 13, 2005 |
| 74LVC543AD | 74LVC543AD-T | 9352 458 50118 | Volume production | SOT137-1
(SO24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC543AD
| week 13, 2005 |
| 74LVC543ADB | 74LVC543ADB | 9352 458 60112 | Volume production | SOT340-1
(SSOP24) | Tube | Standard Marking | 74LVC543ADB
| week 12, 2005 |
| 74LVC543ADB | 74LVC543ADB-T | 9352 458 60118 | Volume production | SOT340-1
(SSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC543ADB
| week 12, 2005 |
| 74LVC543APW | 74LVC543APW | 9352 458 70112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | 74LVC543APW
| week 10, 2005 |
| 74LVC543APW | 74LVC543APW-T | 9352 458 70118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC543APW
| week 10, 2005 |
Products in the above table are all in production. Some variants are discontinued; click here for information on these variants.
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74LVC543ABQ | 9352 753 78118 | Order samples | ||||||
| 74LVC543AD | 9352 458 50112 | 0.5500 | not available | |||||
| 74LVC543AD | 9352 458 50118 | 0.5500 | Order samples | |||||
| 74LVC543ADB | 9352 458 60112 | 0.5500 | not available | |||||
| 74LVC543ADB | 9352 458 60118 | 0.5500 | Order samples | |||||
| 74LVC543APW | 9352 458 70112 | 0.5500 | not available | |||||
| 74LVC543APW | 9352 458 70118 | 0.5500 | 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 |
|---|---|---|---|---|---|---|---|
| 74LVC543ABQ | SOT815-1
(DHVQFN24) | 3.3V Latched Transceiver; Non-Inverting (3-State) | 3.3@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC543AD | SOT137-1
(SO24) | 3.3V Latched Transceiver; Non-Inverting (3-State) | 3.3@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC543ADB | SOT340-1
(SSOP24) | 3.3V Latched Transceiver; Non-Inverting (3-State) | 3.3@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC543APW | SOT355-1
(TSSOP24) | 3.3V Latched Transceiver; Non-Inverting (3-State) | 3.3@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
Similar products
74LVC543A 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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