 
74LVT16543A
3.3 V 16-bit registered transceiver; 3-state
The 74LVT16543A is a 16-bit registered transceiver with 3-state outputs. The device can be used as two 8-bit transceivers or one 16-bit transceiver.
Data flow in each direction is controlled by intput enable (nEAB and nEBA), latch enable (nLEAB and nLEBA), and output enable (nOEAB and nOEBA) inputs. For A to B data flow, the device operates in the transparent mode when (nEAB) and (nLEAB) are LOW. A subsequent LOW-to-HIGH transition of the nLEAB input latches the data and the outputs no longer change with the inputs. A HIGH on either nEAB or nOEAB causes the outputs to assume a high-impedance OFF-state.
Control of data flow from B to A is similar, but using the nEBA, nLEBA, and nOEBA inputs. Bus hold data inputs eliminate the need for external pull-up resistors to define unused inputs
Features and benefits
- 16-bit universal bus interface 
- 3-state buffers 
- Wide supply voltage range from 2.7 V to 3.6 V 
- Input and output interface capability to systems at 5 V supply 
- Overvoltage tolerant inputs to 5.5 V 
- Direct interface with TTL levels 
- BiCMOS high speed and output drive 
- Output capability: +64 mA/-32 mA 
- Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs 
- Live insertion/extraction permitted 
- Power-up 3-state 
- Power-up reset 
- No bus current loading when output is tied to 5 V bus 
- IOFF circuitry provides partial Power-down mode operation 
- Latch-up performance exceeds 500 mA per JESD 78 Class II Level B 
- Complies with JEDEC standards - JESD8C (2.7 V to 3.6 V) 
 
- ESD protection: - HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V 
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V 
 
- Specified from -40 °C to +85 °C 
Parametrics
| Type number | VCC(A) (V) | VCC(B) (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Nr of bits | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Package name | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LVT16543ADGG | n.a. | n.a. | TTL | -32/64 | 2.2 | 16 | 150 | medium | -40~85 | 93 | TSSOP56 | 
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing | 
|---|---|---|---|---|---|---|---|
| 74LVT16543ADGG | 74LVT16543ADGG,118 (935203040118) | Active | LVT16543A |   TSSOP56 (SOT364-1) | SOT364-1 | SSOP-TSSOP-VSO-WAVE | SOT364-1_118 | 
All type numbers in the table below are discontinued.
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing | 
|---|---|---|---|---|---|---|---|
| 74LVT16543ADL | 74LVT16543ADL,512 (935182750512) | Obsolete | LVT16543A |   SSOP56 (SOT371-1) | SOT371-1 | SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Not available | 
| 74LVT16543ADL,518 (935182750518) | Obsolete | LVT16543A | Not available | ||||
| 74LVT16543ADL,112 (935182750112) | Obsolete | LVT16543A | Not available | ||||
| 74LVT16543ADL,118 (935182750118) | Obsolete | LVT16543A | Not available | 
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator | 
|---|---|---|---|---|
| 74LVT16543ADGG | 74LVT16543ADGG,118 | 74LVT16543ADGG |  |   | 
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator | 
|---|---|---|---|---|
| 74LVT16543ADL | 74LVT16543ADL,512 | 74LVT16543ADL |  |   | 
| 74LVT16543ADL | 74LVT16543ADL,518 | 74LVT16543ADL |  |   | 
| 74LVT16543ADL | 74LVT16543ADL,112 | 74LVT16543ADL |   | |
| 74LVT16543ADL | 74LVT16543ADL,118 | 74LVT16543ADL |   | 
Documentation (11)
| File name | Title | Type | Date | 
|---|---|---|---|
| 74LVT16543A | 3.3 V 16-bit registered transceiver; 3-state | Data sheet | 2024-07-08 | 
| AN90063 | Questions about package outline drawings | Application note | 2025-10-22 | 
| sh00039 | Block diagram: 74ALVT16543DGG, 74ALVT16543DL, 74LVT16543ADGG, 74LVT16543ADL | Block diagram | 2009-11-03 | 
| SOT364-1 | 3D model for products with SOT364-1 package | Design support | 2020-01-22 | 
| lvt16543a | lvt16543a IBIS model | IBIS model | 2013-04-09 | 
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 | 
| SOT364-1 | plastic, thin shrink small outline package; 56 leads; 0.5 mm pitch; 14 mm x 6.1 mm x 1.2 mm body | Package information | 2022-06-23 | 
| SOT371-1 | plastic, shrink small outline package; 56 leads; 0.635 mm pitch; 18.45 mm x 7.5 mm x 2.8 mm body | Package information | 2020-04-21 | 
| SSOP-TSSOP-VSO-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 | 
| lvt16 | lvt16 Spice model | SPICE model | 2013-05-07 | 
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 | 
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