Specifications
| Type | Description |
|---|---|
| Part Number | SN74AXC8T245 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | PW (TSSOP-24) 7.8 mm x 6.4 mm; RHL (VQFN-24) 5.5 mm x 3.5 mm; RJW (UQFN-24) 4 mm x 2 mm |
| Function | 8-bit non-inverting dual-supply bus transceiver with configurable voltage translation and tri-state outputs |
| A-port supply voltage range | 0.65 to 3.6 V |
| B-port supply voltage range | 0.65 to 3.6 V |
| Operating free-air temperature | -40 to 125 °C |
| Maximum data rate | Up to 380 Mbps, translating from 1.8 V to 3.3 V |
| Direction control inputs reference | VCCA for DIR1 and DIR2 control pins |
| Output enable input reference | VCCA for OE control pin |
| Output enable behavior | Pull OE to GND to enable all outputs; pull OE to VCCA for high-impedance outputs |
| VCC isolation threshold | Outputs disabled and high impedance if either VCC input supply is below 100 mV |
| A-port I/O reference | VCCA for A1 through A8 pins |
| B-port I/O reference | VCCB for B1 through B8 pins |
| Absolute maximum VCCA | -0.5 to 4.2 V |
| Absolute maximum VCCB | -0.5 to 4.2 V |
| Absolute maximum input voltage | -0.5 to 4.2 V for A-port, B-port, and control inputs |
| Absolute maximum output voltage, high-impedance or power-off state | -0.5 to 4.2 V for A-port and B-port outputs |
| Absolute maximum continuous output current | -50 to 50 mA |
| Absolute maximum continuous VCC or GND current | -100 to 100 mA through VCCA, VCCB, or GND |
| Absolute maximum junction temperature | 150 °C |
| Storage temperature range | -65 to 150 °C |
| ESD rating, human-body model | ±8000 V, ANSI/ESDA/JEDEC JS-001 |
| ESD rating, charged-device model | ±1000 V, JEDEC JESD22-C101 |
| High-level input voltage threshold | 0.70 x VCCI for data inputs, VCCI = 0.65 V to 1.0 V |
| High-level input voltage threshold | 0.65 x VCCI for data inputs, VCCI = 1.1 V to 1.95 V |
| High-level input voltage threshold | 1.6 V minimum for data inputs, VCCI = 2.3 V to 2.7 V |
| High-level input voltage threshold | 2.0 V minimum for data inputs, VCCI = 3.0 V to 3.6 V |
| Low-level input voltage threshold | 0.30 x VCCI maximum for data inputs, VCCI = 0.65 V to 1.0 V |
| Low-level input voltage threshold | 0.35 x VCCI maximum for data inputs, VCCI = 1.1 V to 1.95 V |
| Low-level input voltage threshold | 0.7 V maximum for data inputs, VCCI = 2.3 V to 2.7 V |
| Low-level input voltage threshold | 0.8 V maximum for data inputs, VCCI = 3.0 V to 3.6 V |
| Input voltage operating range | 0 to 3.6 V |
| Output voltage operating range, active state | 0 to VCCO |
| Output voltage operating range, tri-state | 0 to 3.6 V |
| Input transition rise or fall rate | 10 ns/V maximum |
| VOH | VCCO - 0.1 V minimum; VI = VIH, IOH = -100 µA, VCCA/VCCB = 0.7 V to 3.6 V, TA = -40 °C to 125 °C |
| VOL | 0.1 V maximum; VI = VIL, IOL = 100 µA, VCCA/VCCB = 0.7 V to 3.6 V, TA = -40 °C to 125 °C |
| Control input leakage current | -1 to 1 µA; VI = VCCA or GND, VCCA/VCCB = 0.65 V to 3.6 V, TA = -40 °C to 125 °C |
| Partial power-down current, A port | -8 to 8 µA; VI or VO = 0 V to 3.6 V, VCCA = 0 V, VCCB = 0 V to 3.6 V, TA = -40 °C to 125 °C |
| Partial power-down current, B port | -8 to 8 µA; VI or VO = 0 V to 3.6 V, VCCA = 0 V to 3.6 V, VCCB = 0 V, TA = -40 °C to 125 °C |
| High-impedance output current | -8 to 8 µA; VO = VCCO or GND, VI = VCCI or GND, OE = VIH, VCCA = 3.6 V, VCCB = 3.6 V, TA = -40 °C to 125 °C |
| Combined supply current | 55 µA maximum; VI = VCCI or GND, IO = 0 mA, VCCA/VCCB = 0.65 V to 3.6 V, TA = -40 °C to 125 °C |
| Control input capacitance | 4.5 pF typical; control inputs DIR and OE, VI = 3.3 V or GND, VCCA = 3.3 V, VCCB = 3.3 V |
| Data I/O capacitance | 5 pF typical; ports A and B, OE = VCCA, VO = 1.65 V DC + AC, VCCA = 3.3 V, VCCB = 3.3 V |
| Thermal resistance RθJA, TSSOP-24 | 92.0 °C/W for PW package |
| Thermal resistance RθJA, VQFN-24 | 35.0 °C/W for RHL package |
| Thermal resistance RθJA, UQFN-24 | 123.1 °C/W for RJW package |
| Datasheet Status | request_only |
Product Overview
The SN74AXC8T245 is an 8-bit non-inverting dual-supply bus transceiver from Texas Instruments. It provides configurable voltage translation between an A port referenced to VCCA and a B port referenced to VCCB, with both supply rails specified for 0.65 to 3.6 V operation.
Direction control is handled through DIR1 and DIR2 inputs referenced to VCCA. The OE input is also referenced to VCCA; pulling OE to GND enables all outputs, while pulling OE to VCCA places the outputs in a high-impedance state. The device also disables outputs and places them in high impedance if either VCC input supply is below 100 mV.
The device supports operation from -40 to 125 °C and data rates up to 380 Mbps for 1.8 V to 3.3 V translation. Package options include PW TSSOP-24, RHL VQFN-24, and RJW UQFN-24, with corresponding RθJA values of 92.0 °C/W, 35.0 °C/W, and 123.1 °C/W.
Key Features
- 8-bit non-inverting dual-supply bus transceiver
- Configurable voltage translation with tri-state outputs
- A-port supply range from 0.65 to 3.6 V
- B-port supply range from 0.65 to 3.6 V
- Up to 380 Mbps for 1.8 V to 3.3 V translation
- DIR1 and DIR2 inputs referenced to VCCA
- OE input referenced to VCCA
- OE high places outputs in high impedance
- VCC isolation below 100 mV on either supply
- -40 to 125 °C operating free-air temperature
- 55 µA maximum combined supply current
- PW, RHL, and RJW 24-pin package options
Typical Applications
- Dual-supply bus voltage translation
- 8-bit digital bus transceiving
- Tri-state output bus isolation
- A-port to B-port level shifting
- 1.8 V to 3.3 V translation
- Mixed-supply signal-chain interfaces
- Power-off high-impedance isolation
Procurement Notes
When requesting a quote for SN74AXC8T245, 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 type of device is the SN74AXC8T245?
The SN74AXC8T245 is an 8-bit non-inverting dual-supply bus transceiver with configurable voltage translation and tri-state outputs. Its A-port I/O is referenced to VCCA, while its B-port I/O is referenced to VCCB.
What supply voltage ranges does SN74AXC8T245 support?
Both the A-port supply VCCA and B-port supply VCCB are specified for recommended operation from 0.65 to 3.6 V. The input voltage operating range is 0 to 3.6 V.
How is output enable controlled on SN74AXC8T245?
The OE control pin is referenced to VCCA. Pulling OE to GND enables all outputs, while pulling OE to VCCA places the outputs in a high-impedance state.
What happens when a supply is below 100 mV?
The VCC isolation feature disables the outputs and places them in a high-impedance state if either VCC input supply is below 100 mV.
Which package options are specified for SN74AXC8T245?
The specified package options are PW TSSOP-24 measuring 7.8 mm x 6.4 mm, RHL VQFN-24 measuring 5.5 mm x 3.5 mm, and RJW UQFN-24 measuring 4 mm x 2 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 8, 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.