Specifications
| Type | Description |
|---|---|
| Part Number | SN74LVC1T45 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Inferred Category | Signal_Chain |
| Component Type | Other |
| Package / Case | DRL (SOT-6) 1.6mm x 1.6mm; DBV (SOT-23-6) 2.9mm x 2.8mm; DCK (SC70-6) 2mm x 2.1mm; DPK (USON-6) 1.6mm x 1.6mm; YZP (DSBGA-6) 1mm x 0.5mm |
| Function | Single-bit noninverting bus transceiver with configurable voltage translation and 3-state outputs |
| VCCA Supply Voltage Range | 1.65-5.5 V |
| VCCB Supply Voltage Range | 1.65-5.5 V |
| Voltage Translation Nodes | 1.8 V, 2.5 V, 3.3 V, and 5 V |
| Direction Control Reference | DIR input referenced to VCCA |
| Direction Control Logic | DIR low selects B-port to A-port direction |
| VCC Isolation Feature | Both ports high-impedance if either VCC input is at GND |
| Maximum ICC | 4 uA max; ICCA + ICCB, VI = VCCI or GND, IO = 0 |
| Maximum Data Rate | 420 Mbps; 3.3 V to 5 V translation |
| Maximum Data Rate | 210 Mbps; translate to 3.3 V |
| Maximum Data Rate | 140 Mbps; translate to 2.5 V |
| Maximum Data Rate | 75 Mbps; translate to 1.8 V |
| Output Drive Current | +/-24 mA at 3.3 V |
| Absolute Maximum Supply Voltage | -0.5 to 6.5 V; VCCA or VCCB |
| Absolute Maximum Input Voltage | -0.5 to 6.5 V; any input |
| Absolute Maximum High-Impedance Output Voltage | -0.5 to 6.5 V; any output in high-impedance or power-off state |
| Absolute Maximum A-Port Output Voltage | -0.5 V to VCCA + 0.5 V; output in high or low state |
| Absolute Maximum B-Port Output Voltage | -0.5 V to VCCB + 0.5 V; output in high or low state |
| Input Clamp Current | -50 mA; VI < 0 |
| Output Clamp Current | -50 mA; VO < 0 |
| Continuous Output Current | +/-50 mA absolute maximum |
| Continuous Current Through VCC or GND | +/-100 mA absolute maximum |
| Junction Temperature | 150 °C max |
| Storage Temperature | -65 to 150 °C |
| Operating Free-Air Temperature | -40 to 85 °C |
| HBM ESD Rating | +/-2000 V; ANSI/ESDA/JEDEC JS-001 |
| CDM ESD Rating | +/-1000 V; JEDEC JESD22-C101 |
| Machine Model ESD Rating | +/-200 V |
| VIH Data Input | VCCI x 0.65 min; VCCI = 1.65 to 1.95 V |
| VIH Data Input | 1.7 V min; VCCI = 2.3 to 2.7 V |
| VIH Data Input | 2 V min; VCCI = 3 to 3.6 V |
| VIH Data Input | VCCI x 0.7 min; VCCI = 4.5 to 5.5 V |
| VIL Data Input | VCCI x 0.35 max; VCCI = 1.65 to 1.95 V |
| VIL Data Input | 0.7 V max; VCCI = 2.3 to 2.7 V |
| VIL Data Input | 0.8 V max; VCCI = 3 to 3.6 V |
| VIL Data Input | VCCI x 0.3 max; VCCI = 4.5 to 5.5 V |
| Output Voltage Range | 0 to VCCO V |
| Input Voltage Range | 0 to 5.5 V |
| High-Level Output Current | -4 mA; VCCO = 1.65 to 1.95 V |
| High-Level Output Current | -8 mA; VCCO = 2.3 to 2.7 V |
| High-Level Output Current | -24 mA; VCCO = 3 to 3.6 V |
| High-Level Output Current | -32 mA; VCCO = 4.5 to 5.5 V |
| Low-Level Output Current | 4 mA; VCCO = 1.65 to 1.95 V |
| Low-Level Output Current | 8 mA; VCCO = 2.3 to 2.7 V |
| Low-Level Output Current | 24 mA; VCCO = 3 to 3.6 V |
| Low-Level Output Current | 32 mA; VCCO = 4.5 to 5.5 V |
| VOH | VCCO - 0.1 V min; IOH = -100 uA, VCCA/VCCB = 1.65 to 4.5 V |
| VOH | 1.2 V min; IOH = -4 mA, VCCA = 1.65 V, VCCB = 1.65 V |
| VOH | 1.9 V min; IOH = -8 mA, VI = VIH, VCCA = 2.3 V, VCCB = 2.3 V |
| VOH | 2.4 V min; IOH = -24 mA, VCCA = 3 V, VCCB = 3 V |
| VOH | 3.8 V min; IOH = -32 mA, VCCA = 4.5 V, VCCB = 4.5 V |
| VOL | 0.1 V max; IOL = 100 uA, VCCA/VCCB = 1.65 to 4.5 V |
| VOL | 0.45 V max; IOL = 4 mA, VCCA = 1.65 V, VCCB = 1.65 V |
| VOL | 0.3 V max; IOL = 8 mA, VI = VIL, VCCA = 2.3 V, VCCB = 2.3 V |
| VOL | 0.55 V max; IOL = 24 mA, VCCA = 3 V, VCCB = 3 V |
| VOL | 0.55 V max; IOL = 32 mA, VCCA = 4.5 V, VCCB = 4.5 V |
| DIR Input Leakage Current | +/-2 uA max; II, VI = VCCA or GND, VCCA/VCCB = 1.65 to 5.5 V, TA = -40 to 85 °C |
| Power-Off Leakage Current | +/-2 uA max; Ioff, A port, VCCA = 0 V, VCCB = 0 to 5.5 V, VI or VO = 0 to 5.5 V, TA = -40 to 85 °C |
| High-Impedance Output Leakage Current | +/-2 uA max; IOZ, A or B port, VO = VCCO or GND, VCCA/VCCB = 1.65 to 5.5 V, TA = -40 to 85 °C |
| DIR Input Capacitance | 2.5 pF typ; CI, VI = VCCA or GND, VCCA = 3.3 V, VCCB = 3.3 V, TA = 25 °C |
| A or B Port I/O Capacitance | 6 pF typ; Cio, VO = VCCA/B or GND, VCCA = 3.3 V, VCCB = 3.3 V, TA = 25 °C |
| Latch-Up Performance | Exceeds 100 mA; JESD78 Class II |
| Datasheet Source | Manufacturer technical datasheet |
| Datasheet Status | request_only |
Product Overview
SN74LVC1T45 is a Texas Instruments single-bit noninverting bus transceiver with configurable voltage translation and 3-state outputs. The device is intended for single-bit bidirectional signal translation across VCCA and VCCB domains, with both supplies specified from 1.65 V to 5.5 V.
The device supports universal low-voltage bidirectional translation among 1.8 V, 2.5 V, 3.3 V, and 5 V nodes. Direction is controlled by a DIR input referenced to VCCA; a low level on DIR selects B-port to A-port transfer. If either VCC input is at GND, both ports are held in a high-impedance state.
Performance limits include 420 Mbps maximum data rate for 3.3 V to 5 V translation, 210 Mbps when translating to 3.3 V, 140 Mbps to 2.5 V, and 75 Mbps to 1.8 V. Package choices include DRL SOT-6, DBV SOT-23-6, DCK SC70-6, DPK USON-6, and YZP DSBGA-6 footprints for compact assembly options.
Key Features
- Single-bit noninverting bus transceiver with 3-state outputs
- Configurable translation across VCCA and VCCB domains
- VCCA and VCCB each support 1.65-5.5 V
- Supports 1.8 V, 2.5 V, 3.3 V, and 5 V nodes
- DIR input is referenced to VCCA
- DIR low selects B-port to A-port direction
- Both ports high-impedance if either VCC input is grounded
- 4 uA maximum ICC under specified static conditions
- 420 Mbps maximum for 3.3 V to 5 V translation
- ±24 mA output drive current at 3.3 V
- -40 to 85 °C operating free-air temperature
- Latch-up performance exceeds 100 mA per JESD78 Class II
Typical Applications
- Single-bit voltage translation
- Bidirectional bus-level shifting
- 1.8 V to 5 V logic interfaces
- DIR-controlled signal direction paths
- Power-domain isolation with high-impedance ports
- Compact translated signal routing
- 3-state output signal gating
Procurement Notes
When requesting a quote for SN74LVC1T45, 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 SN74LVC1T45?
SN74LVC1T45 is a Texas Instruments single-bit noninverting bus transceiver with configurable voltage translation and 3-state outputs. It is categorized as a Signal_Chain component and uses separate VCCA and VCCB supply domains.
What voltage ranges do VCCA and VCCB support?
Both VCCA and VCCB are specified for 1.65 V to 5.5 V under recommended operating conditions. The device supports translation nodes at 1.8 V, 2.5 V, 3.3 V, and 5 V.
How is signal direction controlled on this device?
Direction is controlled by the DIR input, which is referenced to VCCA. According to the pin function information, a low level on DIR selects the B-port to A-port signal direction.
What happens if either supply input is grounded?
The device includes a VCC isolation feature. If either VCC input is at GND, both ports are placed in a high-impedance state according to the extracted device feature description.
What package options are listed for SN74LVC1T45?
Package options include DRL SOT-6 at 1.6 mm x 1.6 mm, DBV SOT-23-6 at 2.9 mm x 2.8 mm, DCK SC70-6 at 2 mm x 2.1 mm, DPK USON-6 at 1.6 mm x 1.6 mm, and YZP DSBGA-6 at 1 mm x 0.5 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 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.