onsemi T30LMXT3V4T245 Dual-Supply Transceiver
onsemi T30LMXT3V4T245 Dual-Supply Transceiver is a high‑speed, 4‑bit configurable dual‑supply translating bidirectional transceiver designed to enable reliable voltage‑level translation between digital interfaces operating at different supply voltages. The device features independent A‑ and B‑ports, powered by separate supply rails (VCCA and VCCB) that can each be set anywhere from 0.9V to 3.6V, allowing seamless bidirectional translation across a wide range of low‑voltage logic levels.
Internally, the onsemi T30LMXT3V4T245 transceiver is organized into two independent 2‑bit groups, each with its own direction (DIR) and output enable (OE) controls, enabling flexible data‑flow management and 3‑state operation on a per‑group basis. Direction control determines whether data flows from A‑to‑B or B‑to‑A, while the OE pins place both ports of a group into high‑impedance when disabled, supporting bus sharing and isolation.
The T30LMXT3V4T245 supports high‑speed operation with balanced propagation delay, achieving data rates up to 400Mbps for higher‑voltage translations, and provides balanced output drive up to ±24mA at 3.0V for strong signal integrity. Additional robustness features include non‑preferential power‑supply sequencing, partial power‑off protection, and outputs that default to 3‑state until valid supply levels are present, helping prevent back‑powering and bus contention during power transitions. Housed in a compact UQFN16 (1.8mm × 2.6mm) lead‑free package, the T30LMXT3V4T245 is well suited for space‑constrained designs such as mobile devices, portable electronics, and automotive systems that require fast, flexible, and reliable dual‑supply voltage translation.
Features
- Wide 0.9V to 3.6V VCCA and VCCB operating range
- ±24mA balanced output drive at 3.0V
- High-speed with balanced propagation delay, 2.3ns maximum from 3.0V to 3.6V
- Input pins OVT to 3.6V
- Non-preferential VCC sequencing
- Outputs at 3-state until the active VCC is reached
- Partial power-off protection
- Outputs switch to 3-state with either VCC at GND
- Typical maximum data rates
- 400Mbps (≥1.8V to 3.3V translation)
- 200Mbps (≥1.1V to [1.8V, 2.5V, 3.3V] translation)
- 150Mbps (≥1.1V to 1.5V translation)
- 100Mbps (≥1.1V to 1.2V translation)
- Small 1.8mm x 2.6mm UQFN16 package
- Lead-free and RoHS-compliant
Applications
- Mobile phones, PDAs, and other portable devices
- Automotive
Specifications
- 0.9V to 3.6V operating positive DC supply voltage range
- -50mA maximum DC input/output diode current
- ±50mA maximum DC output source/sink current
- ±100mA maximum DC supply current per supply pin
- ±100mA maximum DC ground current per ground pin
- 875mW maximum power dissipation in still air
- 142°C/W maximum thermal resistance
- ±100mA maximum latchup performance above VCC and below GND at +25°C
- 0nS/V to 5nS/V input transition rise/fall range
- 2.5pF typical control pin input capacitance
- 5.0pF typical I/O pin input capacitance
- 0.4pF to 12pF power dissipation capacitance range
- -40°C to +125°C operating temperature range
- +150°C maximum junction temperature under bias
- Moisture Sensitivity Level (MSL) 1
- UL 94V-0 flammability rating at 0.125"
- Maximum ESD withstanding voltage
- 2kV Human Body Model (HBM)
- 1kV Charged Device Model (CDM)
Logic Diagrams
