Specifications
| Type | Description |
|---|---|
| Part Number | SN74LVC2T45 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | DCT (SM8, 8) 2.95mm x 4mm; DCU (VSSOP, 8) 2mm x 3.1mm; YZP (DSBGA, 8) 1.5mm x 0.5mm |
| Supply Voltage Range | 1.65-5.5 V |
| Supply Voltage Range | 1.65-5.5 V |
| Voltage Translation Nodes | 1.8 V, 2.5 V, 3.3 V, 5 V |
| Maximum ICC | 4 uA max |
| Output Drive Current | +/-24 mA |
| Maximum Data Rate | 420 Mbps |
| Maximum Data Rate | 210 Mbps |
| Maximum Data Rate | 140 Mbps |
| Maximum Data Rate | 75 Mbps |
| VCC Isolation | Both ports high-impedance |
| Direction Control Reference | DIR referenced to VCCA |
| Partial-Power-Down Support | Ioff supported |
| Latch-Up Performance | >100 mA |
| HBM ESD Rating | +/-4000 V |
| Machine Model ESD Rating | 200 V |
| CDM ESD Rating | +/-1000 V |
| Absolute Maximum Supply Voltage | -0.5 to 6.5 V |
| Absolute Maximum Input Voltage | -0.5 to 6.5 V |
| High-Impedance or Power-Off Output Voltage Range | -0.5 to 6.5 V |
| Output Voltage Range | -0.5 to VCCA + 0.5 V |
| Output Voltage Range | -0.5 to VCCB + 0.5 V |
| Input Clamp Current | -50 mA |
| Output Clamp Current | -50 mA |
| Continuous Output Current | -50 to 50 mA |
| Continuous Current Through VCC or GND | -100 to 100 mA |
| Junction Temperature | 150 degC |
| Storage Temperature | -65 to 150 degC |
| Recommended Input Voltage | 0 to 5.5 V |
| Recommended Output Voltage | 0 to VCCO V |
| Operating Free-Air Temperature | -40 to 85 degC |
| High-Level Data Input Voltage | VCCI x 0.65 min |
| High-Level Data Input Voltage | 1.7 V min |
| High-Level Data Input Voltage | 2 V min |
| High-Level Data Input Voltage | VCCI x 0.7 min |
| Low-Level Data Input Voltage | VCCI x 0.35 max |
| Low-Level Data Input Voltage | 0.7 V max |
| Low-Level Data Input Voltage | 0.8 V max |
| Low-Level Data Input Voltage | VCCI x 0.3 max |
| High-Level Output Current | -4 mA |
| High-Level Output Current | -8 mA |
| High-Level Output Current | -24 mA |
| High-Level Output Current | -32 mA |
| Low-Level Output Current | 4 mA |
| Low-Level Output Current | 8 mA |
| Low-Level Output Current | 24 mA |
| Low-Level Output Current | 32 mA |
| Input Transition Rise/Fall Rate | 20 ns/V max |
| Input Transition Rise/Fall Rate | 10 ns/V max |
| Input Transition Rise/Fall Rate | 5 ns/V max |
| Junction-to-Ambient Thermal Resistance | 246.4 degC/W |
| Junction-to-Ambient Thermal Resistance | 195.3 degC/W |
| Junction-to-Ambient Thermal Resistance | 105.8 degC/W |
| DIR Input Leakage Current | +/-1 uA typ, +/-2 uA max |
| Power-Off Leakage Current | +/-1 uA typ, +/-2 uA max |
| Power-Off Leakage Current | +/-1 uA typ, +/-2 uA max |
| High-Impedance Output Leakage Current | +/-1 uA typ, +/-2 uA max |
| Total Supply Current | 4 uA max |
| Input Capacitance | 2.5 pF typ |
| I/O Capacitance | 6 pF typ |
| Datasheet Status | request_only |
Product Overview
The device uses a DIR control input referenced to VCCA, with the DIR input circuit supplied by VCCA. If either VCC input is at GND, both ports enter a high-impedance state. Partial-power-down operation is supported through Ioff, disabling outputs to help prevent current backflow when powered down.
Electrical limits include 4 uA maximum total supply current, +/-24 mA output drive at 3.3 V, and maximum data rates of 420 Mbps 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 options are DCT SM8 8-pin, DCU VSSOP 8-pin, and YZP DSBGA 8-pin. The operating free-air temperature range is -40 to 85 degC.
Key Features
- Dual-bit dual-supply bus transceiver architecture
- VCCA and VCCB each support 1.65-5.5 V
- Translates 1.8 V, 2.5 V, 3.3 V, and 5 V nodes
- 420 Mbps maximum for 3.3-V to 5-V translation
- 4 uA maximum total supply current
- DIR input is referenced to VCCA
- Both ports high-impedance when either VCC is grounded
- Ioff support disables outputs during power-down
- +/-24 mA output drive at 3.3 V
- -40 to 85 degC operating free-air temperature
Typical Applications
- 1.8 V logic translation
- 2.5 V logic translation
- 3.3 V logic interfaces
- 5 V logic interfaces
- Bidirectional two-bit bus translation
- Partial-power-down signal paths
- Mixed-supply digital interfaces
Procurement Notes
When requesting a quote for SN74LVC2T45, 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 supply rails does SN74LVC2T45 support?
SN74LVC2T45 supports independent VCCA and VCCB supply rails from 1.65 V to 5.5 V. The extracted datasheet facts list both rails with the same operating supply voltage range.
What data rates are specified for SN74LVC2T45 translation?
The maximum data rate is 420 Mbps for 3.3-V to 5-V translation. Other listed rates are 210 Mbps when translating to 3.3 V, 140 Mbps when translating to 2.5 V, and 75 Mbps when translating to 1.8 V.
What happens if a VCC input is grounded?
The datasheet facts specify VCC isolation: if either VCC input is at GND, both ports are placed in a high-impedance state. This behavior is separate from the listed Ioff partial-power-down support.
Which packages are listed for SN74LVC2T45?
The listed package options are DCT SM8 8-pin at 2.95mm x 4mm, DCU VSSOP 8-pin at 2mm x 3.1mm, and YZP DSBGA 8-pin at 1.5mm x 0.5mm.
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.