Specifications
| Type | Description |
|---|---|
| Part Number | SN74AVC4T245 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | D SOIC-16 9.9mm x 6mm; DGV TVSOP-16 3.6mm x 6.4mm; PW TSSOP-16 5mm x 6.4mm; RGY WQFN-16 4mm x 3.5mm; RSV UQFN-16 2.6mm x 1.8mm; BQB WQFN-16 3.5mm x 2.5mm; DYY SOT-16 4.2mm x 2mm |
| Function | 4-bit noninverting bus transceiver with configurable voltage translation and 3-state outputs; device description |
| A-port supply voltage | 1.2 to 3.6 V; recommended operating conditions, VCCA |
| B-port supply voltage | 1.2 to 3.6 V; recommended operating conditions, VCCB |
| Optimized operating supply range | 1.4 to 3.6 V; VCCA/VCCB |
| Operational minimum supply voltage | 1.2 V; VCCA/VCCB |
| Supported translation nodes | 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V; bidirectional voltage translation |
| I/O tolerance | 4.6 V tolerant; I/O pins |
| Maximum data rate | 380 Mbps; 1.8 V to 3.3 V translation |
| Maximum data rate | 200 Mbps; <1.8 V to 3.3 V translation |
| Maximum data rate | 200 Mbps; translate to 2.5 V or 1.8 V |
| Maximum data rate | 150 Mbps; translate to 1.5 V |
| Maximum data rate | 100 Mbps; translate to 1.2 V |
| Control input reference | Referenced to VCCA; DIR and OE inputs |
| Output enable behavior | OE high places outputs in 3-state mode; 1OE and 2OE pins |
| Direction control behavior | A bus to B bus when B-port outputs are activated; B bus to A bus when A-port outputs are activated; DIR-controlled operation |
| Partial power-down support | Ioff circuitry disables outputs to prevent damaging current backflow; powered-down operation |
| VCC isolation behavior | Both ports high-impedance if either VCC input is at GND; VCC isolation feature |
| Absolute maximum supply voltage | -0.5 to 4.6 V; VCCA or VCCB |
| Absolute maximum input voltage | -0.5 to 4.6 V; A-port, B-port, and control inputs |
| Absolute maximum high-impedance or power-off output voltage | -0.5 to 4.6 V; A-port or B-port output |
| Absolute maximum active output voltage | -0.5 to VCCA + 0.5 V; A-port output in high or low state |
| Absolute maximum active output voltage | -0.5 to VCCB + 0.5 V; B-port output in high or low state |
| Input clamp current | -50 mA; VI < 0 V |
| Output clamp current | -50 mA; VO < 0 V |
| Continuous output current | ±50 mA; any output |
| Continuous current through supply or ground | ±100 mA; VCCA, VCCB, or GND |
| Storage temperature | -65 to 150 °C; absolute maximum rating |
| ESD rating HBM | 8 kV; ANSI/ESDA/JEDEC JS-001, all pins |
| ESD rating CDM | 1 kV; JEDEC JESD22-C101, all pins |
| ESD rating machine model | 150 V; machine model |
| High-level input voltage | 0.65 x VCCI min; data inputs, VCCI = 1.2 V to 1.95 V |
| High-level input voltage | 1.6 V min; data inputs, VCCI = 1.95 V to 2.7 V |
| High-level input voltage | 2 V min; data inputs, VCCI = 2.7 V to 3.6 V |
| Low-level input voltage | 0.35 x VCCI max; data inputs, VCCI = 1.2 V to 1.95 V |
| Low-level input voltage | 0.7 V max; data inputs, VCCI = 1.95 V to 2.7 V |
| Low-level input voltage | 0.8 V max; data inputs, VCCI = 2.7 V to 3.6 V |
| Input voltage range | 0 to 3.6 V; recommended operating conditions, VI |
| Output voltage range | 0 to VCCO V; active state |
| Output voltage range | 0 to 3.6 V; 3-state |
| High-level output current | -3 mA; VCCO = 1.2 V |
| High-level output current | -6 mA; VCCO = 1.4 V to 1.6 V |
| High-level output current | -8 mA; VCCO = 1.65 V to 1.95 V |
| High-level output current | -9 mA; VCCO = 2.3 V to 2.7 V |
| High-level output current | -12 mA; VCCO = 3 V to 3.6 V |
| Low-level output current | 3 mA; VCCO = 1.1 V to 1.2 V |
| Low-level output current | 6 mA; VCCO = 1.4 V to 1.6 V |
| Low-level output current | 8 mA; VCCO = 1.65 V to 1.95 V |
| Low-level output current | 9 mA; VCCO = 2.3 V to 2.7 V |
| Low-level output current | 12 mA; VCCO = 3 V to 3.6 V |
| Input transition rise or fall rate | 5 ns/V max; recommended operating conditions |
| Operating free-air temperature | -40 to 85 °C; recommended operating conditions |
| Output high voltage | VCCO - 0.2 V min; IOH = -100 uA, VCCA/VCCB = 1.2 V to 3.6 V, VI = VIH |
| Output high voltage | 0.95 V min; IOH = -3 mA, VCCA/VCCB = 1.2 V, VI = VIH |
| Output high voltage | 1.05 V min; IOH = -6 mA, VCCA/VCCB = 1.4 V, VI = VIH |
| Output high voltage | 1.2 V min; IOH = -8 mA, VCCA/VCCB = 1.65 V, VI = VIH |
| Output high voltage | 1.75 V min; IOH = -9 mA, VCCA/VCCB = 2.3 V, VI = VIH |
| Output high voltage | 2.3 V min; IOH = -12 mA, VCCA/VCCB = 3 V, VI = VIH |
| Output low voltage | 0.2 V max; IOL = 100 uA, VCCA/VCCB = 1.2 V to 3.6 V, VI = VIL |
| Output low voltage | 0.25 V max; IOL = 3 mA, VCCA/VCCB = 1.2 V, VI = VIL |
| Output low voltage | 0.35 V max; IOL = 6 mA, VCCA/VCCB = 1.4 V, VI = VIL |
| Output low voltage | 0.45 V max; IOL = 8 mA, VCCA/VCCB = 1.65 V, VI = VIL |
| Output low voltage | 0.55 V max; IOL = 9 mA, VCCA/VCCB = 2.3 V, VI = VIL |
| Output low voltage | 0.7 V max; IOL = 12 mA, VCCA/VCCB = 3 V, VI = VIL |
| Control input leakage current | ±0.025 uA typ, ±0.25 uA max at 25°C, ±1 uA max over temperature; VI = VCCA or GND, VCCA/VCCB = 1.2 V to 3.6 V |
| Power-off leakage current | ±0.1 uA typ, ±1 uA max at 25°C, ±5 uA max over temperature; A or B port, VI or VO = 0 to 3.6 V, one supply = 0 V |
| 3-state output leakage current | ±0.5 uA typ, ±2.5 uA max at 25°C, ±5 uA max over temperature; A or B port, VO = VCCO or GND, VI = VCCI or GND, OE = VIH, VCCA/VCCB = 3.6 V |
| VCCA supply current | 8 uA max; VI = VCCI or GND, IO = 0, VCCA/VCCB = 1.2 V to 3.6 V |
| VCCB supply current | 8 uA max; VI = VCCI or GND, IO = 0, VCCA/VCCB = 1.2 V to 3.6 V |
| Total supply current | 16 uA max; ICCA + ICCB, VI = VCCI or GND, IO = 0, VCCA/VCCB = 1.2 V to 3.6 V |
| Control input capacitance | 3.5 pF typ, 4.5 pF max; VI = 3.3 V or GND, VCCA/VCCB = 3.3 V |
| A/B port capacitance | 6 pF typ, 7 pF max; VO = 3.3 V or GND, VCCA/VCCB = 3.3 V |
| Latch-up performance | >100 mA; per JESD 78, Class II |
| Datasheet Status | request_only |
Product Overview
SN74AVC4T245 is a Texas Instruments Signal_Chain voltage-translation bus transceiver for mixed-voltage digital interfaces. The device is described as a 4-bit noninverting bus transceiver with configurable voltage translation and 3-state outputs. Its A-port and B-port supplies are independently specified from 1.2 V to 3.6 V, with optimized operation over 1.4 V to 3.6 V and an operational minimum supply voltage of 1.2 V.
The translator supports bidirectional operation among 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V nodes. Maximum data rate depends on translation condition: 380 Mbps for 1.8 V to 3.3 V translation, 200 Mbps for below-1.8 V to 3.3 V or translation to 2.5 V or 1.8 V, 150 Mbps to 1.5 V, and 100 Mbps to 1.2 V.
Control inputs DIR and OE are referenced to VCCA. OE high places outputs in 3-state mode, while DIR selects A-to-B or B-to-A transfer when the corresponding outputs are active. Ioff circuitry supports partial power-down by disabling outputs to prevent damaging current backflow, and both ports become high-impedance if either VCC input is at GND. Package options include SOIC-16, TVSOP-16, TSSOP-16, WQFN-16, UQFN-16, and SOT-16 formats for board assembly constraints.
Key Features
- 4-bit noninverting bus transceiver with 3-state outputs
- Configurable bidirectional voltage translation between A and B ports
- A-port and B-port supplies operate from 1.2 to 3.6 V
- Optimized VCCA/VCCB operation from 1.4 to 3.6 V
- Supports 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V nodes
- 4.6 V tolerant I/O pins
- Up to 380 Mbps for 1.8 V to 3.3 V translation
- OE high places outputs in 3-state mode
- DIR and OE control inputs referenced to VCCA
- Ioff circuitry supports partial power-down operation
- VCC isolation sets both ports high-impedance at GND supply
- -40 to 85 °C operating free-air temperature
Typical Applications
- Mixed-voltage digital buses
- Bidirectional logic-level translation
- 1.2 V to 3.3 V interfaces
- 3-state bus isolation
- Partial power-down systems
- Multi-supply signal chains
- Direction-controlled data paths
Procurement Notes
When requesting a quote for SN74AVC4T245, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What function does the SN74AVC4T245 provide?
SN74AVC4T245 is described as a 4-bit noninverting bus transceiver with configurable voltage translation and 3-state outputs. It supports bidirectional translation between A and B buses under DIR control.
What supply voltages are supported on the A and B ports?
The A-port supply VCCA and B-port supply VCCB are each specified from 1.2 V to 3.6 V in recommended operating conditions. The optimized operating supply range is 1.4 V to 3.6 V.
How fast can the device translate signals?
Maximum data rate depends on the translation condition: 380 Mbps for 1.8 V to 3.3 V, 200 Mbps for below-1.8 V to 3.3 V or translation to 2.5 V or 1.8 V, 150 Mbps to 1.5 V, and 100 Mbps to 1.2 V.
What happens when OE is driven high?
For the 1OE and 2OE pins, OE high places the outputs in 3-state mode. DIR and OE control inputs are referenced to VCCA.
Does the device support powered-down bus protection?
Yes. The extracted facts specify Ioff circuitry that disables outputs to prevent damaging current backflow during powered-down operation. The VCC isolation feature also makes both ports high-impedance if either VCC input is at GND.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.