SN74AVC4T245QPWRQ1 - 4-Bit Auto Level Shifter 380Mbps | TI
MPN: SN74AVC4T245QPWRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.29 | $129.00 |
| 500 | $1.06 | $530.00 |
| 1,000 | $0.85 | $850.00 |
Drop-in alternatives for SN74AVC4T245QPWRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74AVC4T245PWR
β Drop-Inβ In Stock
$0.42 / Unit
View Datasheet βSN74AVC4T234PWR
β Drop-Inπ Reference alternative (not in catalog)
74AVC4T245PW,112
β Drop-Inπ Reference alternative (not in catalog)
SN74AVC4T245QPWRQ1 Maximum Ratings & Electrical Characteristics
| Logic Family | AVC (Automotive Q1) |
| Function | 4-bit dual-supply bus transceiver with configurable voltage translation |
| Bits per Element | 4 |
| VCCA Supply Range | 1.2 V to 3.6 V |
| VCCB Supply Range | 1.2 V to 3.6 V |
| Max Data Rate | 380 Mbps |
| Output Type | 3-State |
| Direction Control | 1DIR, 2DIR (referenced to VCCA) |
| Output Enable | 1OE, 2OE (referenced to VCCA) |
| Ioff Partial Power Down | Yes |
| Automotive Qualification | AEC-Q100 Qualified |
| Package | 16-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (automotive range) |
| Polarity | Non-Inverting |
| RoHS Status | Compliant |
SN74AVC4T245QPWRQ1 Pin Configuration
| Pin 1 | 1OE β Output enable, bank 1 (referenced to VCCA); high = outputs enabled |
| Pin 2 | 1DIR β Direction control, bank 1 (referenced to VCCA) |
| Pin 3 | 1A1 β A-port data I/O, bank 1 bit 1 |
| Pin 4 | 2A2 β A-port data I/O, bank 2 bit 2 |
| Pin 5 | 1A2 β A-port data I/O, bank 1 bit 2 |
| Pin 6 | 2A1 β A-port data I/O, bank 2 bit 1 |
| Pin 7 | GND β Ground |
| Pin 8 | 2OE β Output enable, bank 2 (referenced to VCCA) |
| Pin 9 | 2DIR β Direction control, bank 2 (referenced to VCCA) |
| Pin 10 | 2B1 β B-port data I/O, bank 2 bit 1 |
| Pin 11 | 1B2 β B-port data I/O, bank 1 bit 2 |
| Pin 12 | 2B2 β B-port data I/O, bank 2 bit 2 |
| Pin 13 | 1B1 β B-port data I/O, bank 1 bit 1 |
| Pin 14 | VCCB β B-port supply, 1.2V to 3.6V |
| Pin 15 | GND β Ground |
| Pin 16 | VCCA β A-port supply, 1.2V to 3.6V |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74AVC4T245QPWRQ1 is suitable for 6 applications: Automotive Infotainment Level Shifting, Automotive Body Electronics and Gateway Modules, MCU-to-Peripheral SPI/I2C Translation, Industrial PLC and Automation Interfaces, Test and Measurement Instrument Backplanes, Battery-Powered Portable and Telematics Devices.
Automotive Infotainment Level Shifting
In automotive infotainment and cluster modules, a 1.8V SoC frequently must drive 3.3V displays, touch controllers, and audio codecs. The SN74AVC4T245QPWRQ1 bridges these domains bidirectionally at up to 380Mbps, comfortably handling SPI at tens of MHz. Its AEC-Q100 qualification covers the -40C to +125C cabin and under-dash environment, and Ioff protection allows safe communication during partial power-down when the SoC rail collapses but the display rail remains powered. Placing the transceiver with 0.1uF decoupling on both VCCA and VCCB rails provides a robust, low-skew translation path that preserves signal integrity across the wiring harness-driven voltage droop common in vehicles.
Recommended
Automotive Body Electronics and Gateway Modules
Body control modules and gateways mix 1.8V microcontroller I/O with 3.3V sensors, LIN/CAN transceiver logic, and switch inputs. The SN74AVC4T245QPWRQ1 provides four bidirectional channels with direction control referenced to VCCA, so a single MCU GPIO can steer the whole port. The 3-state outputs let multiple modules share a common bus, and the Ioff feature prevents backfeed into a powered-down ECU during sleep modes - critical for quiescent-current budgets in vehicles. Its 380Mbps capability far exceeds body-bus speed requirements, giving headroom for future firmware-driven faster protocols without PCB changes.
Recommended
MCU-to-Peripheral SPI/I2C Translation
Low-voltage MCUs (1.8V core/I/O) often need to talk to 3.3V flash, ADCs, and PMICs. The SN74AVC4T245QPWRQ1 is used as a 4-bit translator for SPI (SCLK, MOSI, MISO, CS) with DIR steered per transfer direction, or split as two 2-bit banks for mixed SPI/GPIO duty. At 380Mbps, it supports SPI clocks well beyond 50MHz with minimal added propagation delay and low channel-to-channel skew, keeping setup/hold margins healthy. Because control pins track VCCA, connecting VCCA to the MCU rail makes OE and DIR control directly compatible with 1.8V GPIO logic without extra buffering.
Recommended
Industrial PLC and Automation Interfaces
Industrial controllers combine low-voltage processors with legacy 3.3V field-side logic. The SN74AVC4T245QPWRQ1, though automotive-qualified, is equally suited to industrial temperature environments (-40C to +125C rating exceeds most factory needs). Its dual-supply design tolerates the 1.2V to 3.6V range on either side, accommodating FPGA banks at 1.5V or 1.8V talking to 3.3V I/O cards. The 3-state outputs enable backplane bus sharing between multiple processor boards, and configurable translation means one BOM line covers several rail combinations, simplifying procurement across product variants in automation hardware.
Recommended
Test and Measurement Instrument Backplanes
Bench instruments and rack modules frequently interconnect FPGA logic (1.5V-1.8V) with card-edge or rear-panel I/O at 3.3V. The SN74AVC4T245QPWRQ1 provides deterministic, direction-controlled translation with low skid at high toggle rates - its 380Mbps rating supports clocked parallel data and high-rate status buses. The dual 2-bit structure lets designers route two independent buses through one package, saving board area versus discrete 1-bit translators. Ioff partial-power-down allows a module to be hot-inserted with its local rail off while the backplane stays live, preventing latch-up paths through the translator.
Recommended
Battery-Powered Portable and Telematics Devices
Telematics units, trackers, and portable diagnostic tools combine a low-voltage wireless module (1.8V UART/SPI) with 3.3V sensors and storage. The SN74AVC4T245QPWRQ1's low-voltage capability (operational to 1.2V) and Ioff protection suit designs where the application processor powers down between transmissions while peripherals remain on standby. Its configurable translation covers any rail pair in the 1.2V-3.6V envelope, so one design accommodates module generations with differing I/O voltages. The 16-TSSOP package is hand- and reflow-solderable, and 380Mbps throughput leaves ample margin for high-speed SPI flash and module interfaces.
Recommended
Recommended Products Summary
Engineering reference data for SN74AVC4T245QPWRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AVC4T245PW | SN74AVC4T234PWR | 74AVC4T245PW,112 |
|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | TSSOP-16 - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Nexperia |
| Bit Width | 4-bit | 4-bit | 4-bit (2+2 split) | 4-bit |
| Supply Range (VCCA/VCCB) | 1.2V to 3.6V | 1.2V to 3.6V | 1.2V to 3.6V | 1.2V to 3.6V |
| Max Data Rate | 380 Mbps | 380 Mbps | [DATA_NEEDED] | [DATA_NEEDED] |
| Automotive Grade (AEC-Q100) | Yes (Q1) | No (standard grade) | No (standard grade) | No (standard grade) |
| Ioff Partial Power Down | Yes | Yes | Yes | Yes |
| Output Type | 3-State | 3-State | 3-State | 3-State |
| Price (1 pc, as of 2026-08-29) | ~1.85 USD | [DATA_NEEDED] (typically lower) | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- AEC-Q100 automotive qualification (vs SN74AVC4T245PW)
- 380Mbps performance with direction control (vs TXB0104QRUTRQ1)
- Second-source availability from Nexperia (vs 74AVC4T245PW,112)
Design Notes
Decouple VCCA and VCCB independently with 0.1uF ceramic capacitors placed within 2mm of each pin, plus one bulk capacitor per rail. Because translation quality depends on rail integrity, avoid sharing the translator VCCB with noisy load switches. TI recommends VCCA ramp before or together with VCCB; while Ioff tolerates 0V on either rail, neither supply should float - tie unused supply pins only per datasheet power-up sequencing guidance.
Route A-side and B-side traces on separate layers or with ground guard where possible to prevent crosstalk at 380Mbps operation. Keep each translation channel as a short, matched-length pair for SPI clock/data. The 16-TSSOP thermal pad requirements are minimal since dissipation is dominated by dynamic switching; a solid ground plane under the device provides both return path and thermal relief.
Control pins (1DIR, 2DIR, 1OE, 2OE) are referenced to VCCA - driving them from a 3.3V controller while VCCA is 1.8V can violate input specifications, so level-match control logic to VCCA. Do not use this part for 5V translation: VCCA/VCCB max is 3.6V. Unused OE pins should not float; tie them to define output state at power-up to avoid bus contention.
Compliance Information
AEC-Q100 qualified per -Q1 designation on TI product page. RoHS status compliant per TI listing; REACH/halogen details [DATA_NEEDED] from TI product page.
