The Texas Instruments SN74AXC8T245QPWRQ1 is an 8-bit automotive dual-supply non-inverting bus transceiver with bidirectional voltage-level translation. It uses independent VCCA and VCCB supply rails to interface devices operating at different low-voltage logic levels. The device is AEC-Q100 qualified, and TI currently lists the exact orderable part as Active Production.
Both VCCA and VCCB operate from 0.65V to 3.6V, allowing translation between low-voltage nodes such as 0.7V, 0.8V, and 0.9V and common 1.8V, 2.5V, and 3.3V logic systems. Ports A1 through A8 track VCCA, while ports B1 through B8 track VCCB.
The eight channels are divided into two independently direction-controlled 4-bit groups using DIR1 and DIR2. This architecture allows simultaneous up-translation and down-translation. An OE input places the outputs into a high-impedance state to isolate the two buses when required.
Data rates of up to 380Mbps are supported when translating from 1.8V to 3.3V. At a 3V output supply, the electrical specifications include output-drive test conditions up to approximately ±12mA. TI lists a maximum combined supply current of 60µA in its device parameters.
Integrated Ioff partial-power-down protection and VCC isolation help prevent unwanted backflow current during power sequencing. If either VCC supply falls below approximately 100mV, all translator outputs are disabled and placed into a high-impedance state. The device is rated for ±8kV HBM and ±1kV CDM ESD, with latch-up performance above 100mA.
The exact SN74AXC8T245QPWRQ1 is supplied in a 24-pin TSSOP (PW) package, approximately 7.8 × 6.4mm, and is rated for -40°C to +125°C operation. It comes in a 2,000-piece large tape-and-reel, uses NiPdAu lead finish, and carries an MSL Level 1 rating.
Key Features:
- Manufacturer: Texas Instruments
- Part Number: SN74AXC8T245QPWRQ1
- Family: SN74AXC8T245-Q1
- Device Type: Voltage Level Translator / Bus Transceiver
- Channels: 8 Bit
- Logic: Non-Inverting
- Supply Architecture: Dual Supply
- VCCA Range: 0.65V to 3.6V
- VCCB Range: 0.65V to 3.6V
- Translation Direction: Bidirectional
- Direction Control: DIR1 and DIR2
- Channel Groups: 2 × 4 Bit
- Output Type: 3-State
- Maximum Data Rate: 380Mbps at 1.8V to 3.3V
- Output Drive: Up to Approx. ±12mA at 3V Test Conditions
- Maximum Combined Supply Current: 60µA
- Ioff Partial Power Down: Supported
- VCC Isolation: Supported
- Output Enable: Supported
- HBM ESD: ±8kV
- CDM ESD: ±1kV
- Latch-Up: >100mA
- AEC-Q100 Qualified
- Operating Temperature: -40°C to +125°C
- Package: TSSOP-24 / PW
- Package Size: Approx. 7.8 × 6.4mm
- Packaging: Large Tape & Reel
- Reel Quantity: 2,000 pcs
- MSL: Level 1
- Lead Finish: NiPdAu
- RoHS / REACH Compliant
- Product Status: Active Production.
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