Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | 16-bit dual-supply bidirectional level-translating transceiver |
| VCC(A) | 1.5 V to 5.5 V |
| VCC(B) | 1.5 V to 3.6 V |
| Output drive | ±24 mA class |
| Outputs | 3-state |
| Partial power-down | I/OFF support |
| Package | TSSOP48 / SOT362-1 |
| Product status | Active |
Product Overview
The 74ALVC164245DGG:11 is Nexperia’s active TSSOP48 orderable for a 16-bit bidirectional bus transceiver with separate A-side and B-side supplies. It is intended for level translation between independently powered logic domains while providing direction control and 3-state isolation.
The supply relationship is a critical design rule. Nexperia requires VCC(B) to be at least VCC(A) in normal operation, except for defined suspend conditions, so it should not be treated as a fully arbitrary two-way voltage translator.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Bus width | 16 bit |
| Direction | Bidirectional |
| VCC(A) range | 1.5 V to 5.5 V |
| VCC(B) range | 1.5 V to 3.6 V |
| Logic | CMOS/LVTTL |
| Output drive | ±24 mA class |
| Propagation delay | 2.9 ns parametric reference |
| Outputs | 3-state |
| Partial power-down | I/OFF circuitry |
| Operating ambient | -40°C to +85°C |
| HBM ESD | >2 kV |
| CDM ESD | >1 kV |
| Package | TSSOP48, 0.5 mm pitch |
Design Considerations
When one supply is at 0 V, place the affected outputs in high impedance as required by the power-down truth table. This prevents back-powering through the bus pins and preserves the intended I/OFF behavior.
Because the B-side supply has a lower maximum than the A side, verify supply sequencing and rail tolerances. A 5 V B-side rail is outside the specified VCC(B) operating range even though A can operate at 5.5 V.
Related Engineering Resources
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Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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