SN74LXC2T45DTTR Texas Instruments Integrated Circuit (Other) In Stock
SN74LXC2T45DTTR is a dual-supply bidirectional bus transceiver from Texas Instruments supporting voltage translation between 1.2 V and 5.5 V rails. It features two independent channels with a common direction control pin and propagation delays under 5 ns. Available in an 8-pin UQFN package with RoHS-compliant e4 finish.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- SN74LXC2T45DTTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4207(MOQ 500)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional voltage translation between 1.2 V and 5.5 V supply domains with a single common OE/DIR control pin
- Ultra-low propagation delay of less than 5 ns enables high-speed 100 MHz+ interface bridging
- 8-pin UQFN (2x2 mm) package minimizes PCB footprint for space-constrained designs
Applications
SN74LXC2T45DTTR is widely used to bridge I2C, SPI, and UART signals between 3.3 V microcontrollers and 1.8 V or 5 V peripherals in portable consumer electronics and industrial sensor nodes. Its dual-supply architecture suits battery-powered IoT devices where different functional blocks operate at different voltage levels. The part also fits automotive infotainment modules and wearable designs that demand low-power bidirectional level shifting in a compact 2 x 2 mm footprint.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | LXC |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.032A |
| Number of Bits | 2 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.04,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.006mA |
| Prop. Delay@Nom-Sup | 54ns |
| Propagation Delay (tpd) | 11ns |
| Schmitt Trigger | YES |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 0.44V |
| Supply Voltage-Nom (Vsup) | 1.2V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74LXC2T45DTTR:
Bus Transceiver, LXC Series, 1-Func, 1-Bit, True Output, CMOS, PDSO6
Bus Transceiver, LXC Series, 1-Func, 1-Bit, True Output, CMOS, PDSO6
Frequently Asked Questions
What supply voltage range does SN74LXC2T45DTTR support for the A and B ports?
SN74LXC2T45DTTR supports independent supply voltages from 1.2 V to 5.5 V on both the VCCA and VCCB rails, allowing bidirectional translation across any combination of 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V logic families without external resistors or additional components.
How fast can SN74LXC2T45DTTR translate signals, and what is its propagation delay specification?
The device achieves a typical propagation delay of less than 5 ns at 3.3 V supply, making it suitable for interfacing SPI buses running at up to 50 MHz and I2C fast-mode plus at 1 MHz. This enables reliable high-speed communication bridging between mixed-voltage subsystems in embedded designs.
In which designs is SN74LXC2T45DTTR preferred over single-supply logic level shifters?
SN74LXC2T45DTTR is preferred when the two interfacing voltage rails vary independently, for example when a 3.3 V microcontroller talks to a 1.8 V sensor while both rails can fluctuate ±5%. Its 1.2 V to 5.5 V dual-supply tolerance, 32 mA output current capability, and 8-pin UQFN footprint make it a better fit than resistor dividers or single-supply translators in such scenarios.
How many channels does SN74LXC2T45DTTR provide, and how is direction controlled?
SN74LXC2T45DTTR provides 2 bidirectional translation channels controlled by a single shared direction (DIR) pin. Setting DIR high transfers data from A-port to B-port, while DIR low reverses the flow, keeping control logic simple and reducing the GPIO count required on the host processor.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $0.4810 | $240.50 |
| 2500+ | $0.4600 | $1150.00 |
| 5000+ | $0.4340 | $2170.00 |
| 10000+ | $0.4252 | $4252.30 |
| 15000+ | $0.4207 | $6310.35 |
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