사양
| 속성 | 가치 |
| Supplier | Texas Instruments |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74AXC |
| Part Status | Active |
| Logic Type | Translation Transceiver |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High Low | 12mA, 12mA |
| Voltage - Supply | 0.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
개요
Description
SN74AXC4T245RSVR is a 4-bit bidirectional buffer/level-translator (transceiver) from TI with tri-state outputs. It provides a 4-bit bus that can transfer data in either direction between two voltage domains.
How it works:
- Direction control (DIR) selects A→B or B→A data flow.
- Output enable (OE) tri-states the outputs when asserted.
- Separate supplies on each side (VCCA and VCCB) enable level shifting between two logic voltages.
Voltage and compatibility:
- Dual-supply operation: VCCA and VCCB typically in the 1.65 V to 3.6 V range, allowing translation between different domains (e.g., 1.8 V and 3.3 V).
Package and use:
- 20-pin package; delivered in tape-and-reel (RSVR) packaging.
- RoHS-compliant.
- Applications include interfacing microcontrollers, FPGAs, and memories across different logic levels, and buffering a shared bus.
In short: a compact, flexible 4-bit, dual-supply bus transceiver suitable for level-shifting and buffering between heterogeneous digital components.
How it works:
- Direction control (DIR) selects A→B or B→A data flow.
- Output enable (OE) tri-states the outputs when asserted.
- Separate supplies on each side (VCCA and VCCB) enable level shifting between two logic voltages.
Voltage and compatibility:
- Dual-supply operation: VCCA and VCCB typically in the 1.65 V to 3.6 V range, allowing translation between different domains (e.g., 1.8 V and 3.3 V).
Package and use:
- 20-pin package; delivered in tape-and-reel (RSVR) packaging.
- RoHS-compliant.
- Applications include interfacing microcontrollers, FPGAs, and memories across different logic levels, and buffering a shared bus.
In short: a compact, flexible 4-bit, dual-supply bus transceiver suitable for level-shifting and buffering between heterogeneous digital components.
Features
- 4-bit bidirectional bus transceiver with direction control (DIR) and tri-state outputs (OE active-low)
- Dual-supply voltage translation between A (VCCA) and B (VCCB) sides for level shifting between logic domains
- Data can flow A→B or B→A depending on DIR
- Outputs go high impedance when OE is deasserted (low-active enable)
- Ioff supports partial-power-down to prevent back-powering when a side is powered down
- 5-V tolerant I/O with fast CMOS performance; suitable for high-speed bus applications
- ESD protection and robust operation over wide temperature range
Note: Packaging for SN74AXC4T245RSVR is TI’s RS package variant; features apply across typical 4-bit transceiver use cases.
- Dual-supply voltage translation between A (VCCA) and B (VCCB) sides for level shifting between logic domains
- Data can flow A→B or B→A depending on DIR
- Outputs go high impedance when OE is deasserted (low-active enable)
- Ioff supports partial-power-down to prevent back-powering when a side is powered down
- 5-V tolerant I/O with fast CMOS performance; suitable for high-speed bus applications
- ESD protection and robust operation over wide temperature range
Note: Packaging for SN74AXC4T245RSVR is TI’s RS package variant; features apply across typical 4-bit transceiver use cases.
Pinout
- Pin count: 20 pins (TSSOP/SOIC style; RSVR indicates reel packaging)
- Function: 4-bit bidirectional bus transceiver with 3-state outputs. It connects A0–A3 to B0–B3 with data flow controlled by DIR (direction) and OE (output enable, active low). Uses dual supplies: VCCA and VCCB.
- Function: 4-bit bidirectional bus transceiver with 3-state outputs. It connects A0–A3 to B0–B3 with data flow controlled by DIR (direction) and OE (output enable, active low). Uses dual supplies: VCCA and VCCB.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and digital integrated circuits and related components; one of the world’s largest semiconductor makers.
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and digital integrated circuits and related components; one of the world’s largest semiconductor makers.
Application
SN74AXC4T245RSVR is a 4-bit bidirectional level-shifting bus transceiver with tri-state outputs. Applications include:
- Interfaces between devices on different voltage rails (VCCA vs VCCB), e.g., 3.3V ↔ 1.8V/2.5V
- 4-bit data/bus buffering and I/O expansion for MCUs, FPGAs, DSPs, memories, and peripherals
- Interfacing in mixed-signal systems (sensors, displays, peripherals)
- Automotive/industrial applications requiring multi-rail voltage level translation
- Prototyping/test rigs to bridge signals across voltage domains
- Interfaces between devices on different voltage rails (VCCA vs VCCB), e.g., 3.3V ↔ 1.8V/2.5V
- 4-bit data/bus buffering and I/O expansion for MCUs, FPGAs, DSPs, memories, and peripherals
- Interfacing in mixed-signal systems (sensors, displays, peripherals)
- Automotive/industrial applications requiring multi-rail voltage level translation
- Prototyping/test rigs to bridge signals across voltage domains
Package
It’s a 20-pin VSSOP package (VSSOP-20), supplied in Tape & Reel (suffix RSVR).
