規格
| 屬性 | 價值 |
| Supplier | Toshiba Semiconductor and Storage |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | TC74LCX |
| Part Status | Obsolete |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| 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 |
概述
Description
74LCX541FT is an octal D-type latch with tri-state outputs in the 74LCX CMOS family. It buffers eight data lines (D0–D7) to eight outputs (Q0–Q7). A latch-enable (LE) input makes the device transparent (Q follows D) when asserted; when LE is deasserted, it holds the last latched value. An output-enable (OE) input tri-states the eight outputs, allowing a common bus to be shared with other devices. The LCX family provides low-power, high-speed operation at a typical supply range around 2.0–3.6 V and TTL-compatible input thresholds. Common uses include buffering data between a microcontroller and peripherals, bus isolation, and expanding data-bus drive capability in digital systems.
Equivalent
Equivalents to 74LCX541FT (8-bit transparent latch with 3-state outputs) include: TI SN74LCX541, SN74LVC541, SN74HC541, SN74HCT541, SN74ALS541; NXP/Philips 74AHC541, 74AHCT541; and On Semiconductor 74ALVC541 / 74LVC541 variants. Check supply voltage (3.3/5V) and timing; pinout is typically compatible.
Pinout
- Pin count: 20 pins (DIP or equivalent 20‑pin package, e.g., SOIC/TSSOP variants like FT suffix devices).
- Function: Octal buffer/line driver with 3‑state outputs. It buffers 8 data inputs (A0–A7) to 8 outputs (Y0–Y7) with a global output‑enable input that tri‑states all outputs when asserted. It is non‑inverting (Y follows A when enabled).
- Function: Octal buffer/line driver with 3‑state outputs. It buffers 8 data inputs (A0–A7) to 8 outputs (Y0–Y7) with a global output‑enable input that tri‑states all outputs when asserted. It is non‑inverting (Y follows A when enabled).
Manufacturer
Manufacturer: Nexperia (formerly part of Philips/NXP; now an independent global semiconductor company).
What kind of company: A Dutch-based, global supplier of semiconductors, specializing in logic, discrete, and protection devices and related ICs.
What kind of company: A Dutch-based, global supplier of semiconductors, specializing in logic, discrete, and protection devices and related ICs.
Application
74LCX541FT is an octal (8-bit) transparent latch with 3-state outputs. Typical applications:
- 8-bit data/address buffering and storage in digital systems
- Bus interfacing between microprocessors/microcontrollers and peripherals or memory
- Glue logic for decoding, timing, and decoupling between devices
- Memory address latching and gating to display drivers or other peripherals
Why it’s useful: provides temporary storage with tri-state outputs to share a common bus. Features enabling use: latch enable and 3-state output enable.
- 8-bit data/address buffering and storage in digital systems
- Bus interfacing between microprocessors/microcontrollers and peripherals or memory
- Glue logic for decoding, timing, and decoupling between devices
- Memory address latching and gating to display drivers or other peripherals
Why it’s useful: provides temporary storage with tri-state outputs to share a common bus. Features enabling use: latch enable and 3-state output enable.
Package
It comes in a 20-pin surface-mount package, specifically a TSSOP-20 (Pb-free).
