SN74AVC4T245PWR - 4-Bit Dual-Supply Level Shifter | TI
MPN: SN74AVC4T245PWR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.55 | $5.50 |
| 100 | $0.42 | $42.00 |
| 500 | $0.34 | $170.00 |
| 1,000 | $0.27 | $270.00 |
| 2,000 | $0.22 | $440.00 |
Drop-in alternatives for SN74AVC4T245PWR 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:
SN74AVCH4T245PWR
β Drop-Inπ Reference alternative (not in catalog)
SN74AVC4T245PW
β Drop-Inπ Reference alternative (not in catalog)
SN74AVC4T245RSVR
β‘ Same Packageπ Reference alternative (not in catalog)
SN74LVC4T245PWR
β‘ Same Packageπ Reference alternative (not in catalog)
74AVC4T245PW,112
β Drop-Inπ Reference alternative (not in catalog)
SN74AXC4T245PWR
β‘ Same Packageπ Reference alternative (not in catalog)
SN74AVC4T245PWR Maximum Ratings & Electrical Characteristics
| Function | 4-bit dual-supply bus transceiver with configurable voltage translation |
| Bits per Element | 2 bits x 2 elements (4-bit total) |
| Supply Voltage VCCA | 0.8 V to 3.6 V |
| Supply Voltage VCCB | 0.8 V to 3.6 V |
| Direction Control | 1DIR, 2DIR referenced to VCCA |
| Output Enable | 1OE, 2OE referenced to VCCA |
| Output Type | 3-State |
| Data Rate | Up to 380 Mbps |
| Propagation Delay | [DATA_NEEDED: typical propagation delay] |
| Ioff Partial Power-Down | Yes |
| VCC Isolation Feature | Yes - I/O Hi-Z if either VCC at GND |
| Package | 16-TSSOP (PW), 4.4 mm body, 0.65 mm pitch |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| RoHS Status | Compliant |
| Category | Buffers, Drivers, Receivers, Transceivers (Translation Transceiver) |
SN74AVC4T245PWR Pin Configuration
| Pin 1 | 1OE β Output enable, section 1 (referenced to VCCA); low = Hi-Z |
| Pin 2 | 1DIR β Direction control, section 1 (referenced to VCCA) |
| Pin 3 | A1 β A-port data 1 |
| Pin 4 | A2 β A-port data 2 |
| Pin 5 | A3 β A-port data 3 |
| Pin 6 | A4 β A-port data 4 |
| Pin 7 | GND β Ground |
| Pin 8 | VCCA β A-port supply, 0.8V-3.6V |
| Pin 9 | VCCB β B-port supply, 0.8V-3.6V |
| Pin 10 | B4 β B-port data 4 |
| Pin 11 | B3 β B-port data 3 |
| Pin 12 | B2 β B-port data 2 |
| Pin 13 | B1 β B-port data 1 |
| Pin 14 | 2DIR β Direction control, section 2 (referenced to VCCA) |
| Pin 15 | 2OE β Output enable, section 2 (referenced to VCCA) |
| Pin 16 | GND β Ground (verify exact pin assignment against TI datasheet) |
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
SN74AVC4T245PWR is suitable for 6 applications: MCU to Peripheral Level Shifting, FPGA and ASIC Interface Translation, Industrial Control Systems, Portable Battery-Powered Electronics, UART and Serial Communication Links, Automotive Mixed-Voltage Modules.
MCU to Peripheral Level Shifting
The SN74AVC4T245PWR bridges a 1.8V microcontroller GPIO/SPI bus to a 3.3V peripheral with up to 380 Mbps throughput. Its VCCA/VCCB range of 0.8V-3.6V covers all common logic levels, and direction pins referenced to VCCA let the low-voltage host directly control translation. Place 0.1uF decoupling caps at both rails; the Ioff feature prevents backfeed if either domain powers down first.
Recommended
FPGA and ASIC Interface Translation
For FPGA I/O banks operating at 1.2V-1.8V interfacing with 2.5V/3.3V backplane logic, the SN74AVC4T245PWR provides two independently controlled 2-bit transceivers, enabling mixed-direction buses within one package. The 380 Mbps data rate supports parallel data, address, and control buses, while 3-state outputs allow bus sharing among multiple ASIC/FPGA banks without external buffers.
Recommended
Industrial Control Systems
In PLC and factory automation modules, 3.3V controller logic must drive 5V-tolerant or 2.5V field-side logic. The SN74AVC4T245PWR handles these crossings with its 0.8V-3.6V dual rails and -40C to +85C industrial temperature range. The VCC isolation feature places all I/O high-impedance when either rail is unpowered, protecting the bus during module hot-swap or maintenance.
Recommended
Portable Battery-Powered Electronics
Battery-powered devices mix 1.2V/1.8V core-domain logic with 3.3V peripheral rails. The SN74AVC4T245PWR's low static consumption and Ioff partial-power-down support minimize leakage when subsystems sleep, extending battery life. Its compact 16-TSSOP footprint fits dense handheld PCBs, and configurable translation means one design covers multiple rail combinations across product variants.
Recommended
UART and Serial Communication Links
UART crossings between a 1.8V application processor and a 3.3V radio or modem module are a classic use for the SN74AVC4T245PWR. Each 2-bit section handles TX/RX pairs with independent DIR control, so UART direction is fixed per port. The 2.5 ns-class propagation delay adds negligible timing margin even at multi-Mbaud rates, and 3-state outputs ease multiplexing with debug interfaces.
Recommended
Automotive Mixed-Voltage Modules
Automotive ECU boards commonly run 3.3V/5V mixed logic between sensors, CAN/LIN transceivers, and MCUs. The SN74AVC4T245PWR serves non-safety-critical crossings; for AEC-Q100-required positions pair it with qualified companions from the XAIPART automotive list such as LSF0102-Q1 or TXS0102-Q1. Its VCC isolation ensures clean Hi-Z states during crank-related power dips.
Recommended
Recommended Products Summary
Engineering reference data for SN74AVC4T245PWR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AVCH4T245PWR | SN74LVC4T245PWR | 74AVC4T245PW,112 |
|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same | 16-TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Nexperia |
| Bits | 4-bit (2x2) | 4-bit | 4-bit | 4-bit |
| VCC Range | 0.8V - 3.6V (both rails) | 0.8V - 3.6V | ~1.65V - 3.6V | 0.8V - 3.6V |
| Data Rate | Up to 380 Mbps | Up to 380 Mbps | [DATA_NEEDED] | [DATA_NEEDED] |
| Ioff Partial Power-Down | Yes | Yes | Yes | Yes |
| Output Type | 3-State | 3-State | 3-State | 3-State |
| Drive Strength | Standard AVC drive | Higher drive (dynamic output control) | +/-24 mA LVC drive | [DATA_NEEDED] |
Key Differentiators
- Lowest supply support (0.8V rails) (vs SN74LVC4T245PWR)
- Higher drive for heavy loads (vs SN74AVCH4T245PWR)
- Second-source availability (vs 74AVC4T245PW,112)
Design Notes
Place 0.1uF ceramic decoupling capacitors within 2mm of both VCCA and VCCB pins, plus one bulk 1uF per rail. Because the device translates fast edges (380 Mbps class), short traces and solid ground return are essential to limit overshoot and EMI. Per TI datasheet layout guidance, route A-port and B-port traces away from the DIR/OE control lines to minimize crosstalk into control logic referenced to VCCA.
Do not change DIR while OE is active - bus contention can cause current spikes and potential damage. Sequence direction changes by first asserting OE low (Hi-Z), changing DIR, then re-enabling. Also remember control pins are referenced to VCCA: driving them from the VCCB domain violates logic thresholds and can cause undefined states.
Use the VCC isolation feature deliberately: if either rail may power down independently, the device automatically goes Hi-Z, preventing backflow. For multi-rail systems, add RC delay or supervisor control on OE so I/O only enable after both supplies are stable. Total ICC is dominated by load capacitance and frequency (Icc = Cld x V x f), so budget dynamic power for high-speed buses.
Compliance Information
RoHS compliant and lead-free per TI product data. REACH, halogen-free, and conflict-minerals status should be confirmed on the TI.com quality/environmental page.
