仕様
| 属性 | 値 |
| Supplier | Toshiba Semiconductor and Storage |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | TC74LCX |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 1 |
| Output Type | 3-State |
| Current - Output High Low | 24mA, 24mA |
| Voltage - Supply | 1.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概要
Description
74LCX125FT is a 4-channel buffer with tri-state outputs in the low‑voltage LCX CMOS family. It buffers four inputs (A1–A4) to four outputs (Y1–Y4). Each buffer has its own active-low enable input (1OE, 2OE, 3OE, 4OE). When an OE pin is low, the corresponding output follows the input; when OE is high, that output is high-impedance, enabling multiple devices to share a bus without fights. The LCX family operates at a low supply (typically about 2.3–3.6 V) with low static power and fast switching, making it suitable for modern microcontroller and logic designs. Common uses include buffering and isolating data/address lines, level shifting between voltage domains, and protecting devices on a shared bus. The FT suffix refers to a specific packaging/lot variant offered by vendors (e.g., tape‑and‑reel or lead-free options); always check the exact datasheet for pinout, voltage, and timing details.
Equivalent
74LCX125FT is a 4-bit buffer/3-state device (74xx125). Equivalents include:
- TI: SN74LCX125, SN74LVC125A
- NXP: 74LCX125, 74LVC125
- ON Semiconductor: MC74LCX125, MC74LVC125
These are functionally the same quad buffer with 3-state outputs in similar logic families.
- TI: SN74LCX125, SN74LVC125A
- NXP: 74LCX125, 74LVC125
- ON Semiconductor: MC74LCX125, MC74LVC125
These are functionally the same quad buffer with 3-state outputs in similar logic families.
Features
Key features of 74LCX125FT:
- Quad buffer with 3-state outputs (four non-inverting buffers)
- Output-enable control to tri-state all outputs (bus-sharing capability)
- TTL/CMOS input compatibility
- Wide supply voltage range (typical 2.0 V to 3.6 V)
- Low static and dynamic power (CMOS technology)
- Fast switching suitable for low-voltage logic
- Available in FT package; RoHS-compliant
Useful for buffering and level-shifting between low-voltage domains while keeping outputs high-impedance when disabled.
- Quad buffer with 3-state outputs (four non-inverting buffers)
- Output-enable control to tri-state all outputs (bus-sharing capability)
- TTL/CMOS input compatibility
- Wide supply voltage range (typical 2.0 V to 3.6 V)
- Low static and dynamic power (CMOS technology)
- Fast switching suitable for low-voltage logic
- Available in FT package; RoHS-compliant
Useful for buffering and level-shifting between low-voltage domains while keeping outputs high-impedance when disabled.
Pinout
- Pin count: 14 pins (14-pin package variants such as DIP/SOIC/TSSOP)
- Function: Quad buffer/line driver with 3-state outputs (four non-inverting buffers). Each buffer has an input (A1–A4), an output (Y1–Y4), and an enable input (OE1–OE4). When the corresponding OE is active (high), the input passes to the output; when OE is inactive, the output is high-impedance.
- Function: Quad buffer/line driver with 3-state outputs (four non-inverting buffers). Each buffer has an input (A1–A4), an output (Y1–Y4), and an enable input (OE1–OE4). When the corresponding OE is active (high), the input passes to the output; when OE is inactive, the output is high-impedance.
Manufacturer
Manufacturer: NXP Semiconductors (formerly Philips Semiconductors).
What kind of company: A Dutch multinational that designs and manufactures semiconductors and related components for automotive, industrial, consumer, and communications markets.
What kind of company: A Dutch multinational that designs and manufactures semiconductors and related components for automotive, industrial, consumer, and communications markets.
Application
74LCX125FT is a Quad Buffer/Line Driver with 3-State outputs. Typical applications:
- Buffering/isolation of data, address, or control lines between microprocessors, memories, and peripherals
- Shared-bus interfaces with OE control for multiplexing or bus arbitration
- Level shifting in low-voltage digital designs (interfacing different logic families/voltages)
- Noise reduction and fan-out enhancement
- Backplanes, memory and peripheral interfaces, and simple I/O expansion
These use cases leverage its tri-state outputs and fast CMOS performance in low-voltage systems.
- Buffering/isolation of data, address, or control lines between microprocessors, memories, and peripherals
- Shared-bus interfaces with OE control for multiplexing or bus arbitration
- Level shifting in low-voltage digital designs (interfacing different logic families/voltages)
- Noise reduction and fan-out enhancement
- Backplanes, memory and peripheral interfaces, and simple I/O expansion
These use cases leverage its tri-state outputs and fast CMOS performance in low-voltage systems.
Package
14-pin Small Outline IC (SOIC) package.
