74ACT244MTCX

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74ACT244MTCX

IC BUF NON-INVERT 5.5V 20TSSOP

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規格

Supplier onsemi,Rochester Electronics, LLC
Package Tape & Reel (TR),Cut Tape (CT),Bulk
Series 74ACT
ProductStatus Active
LogicType Buffer, Non-Inverting
NumberofElements 2
NumberofBitsperElement 4
OutputType 3-State
Current-OutputHighLow 24mA, 24mA
Voltage-Supply 4.5V ~ 5.5V
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 20-TSSOP (0.173, 4.40mm Width)

概述

Description

74ACT244MTCX is an octal buffer/line driver with tri-state outputs (two 4‑bit sections) in the 74ACT family. It buffers data from inputs to outputs and can place outputs in high impedance when not enabled. Supplied from 4.5–5.5 V (typical 5 V) with TTL-compatible input levels, it delivers fast operation for 5V logic. Each 4-bit section has its own active‑low output enable (1OE and 2OE); when OE is low, the corresponding inputs (A0–A3 and A4–A7) are copied to the outputs (Y0–Y3 and Y4–Y7); when OE is high, those outputs go high impedance. Common uses include bus buffering, data/address line interfacing between CPUs/memory and peripherals, and isolating subsystems in a 5V system. The MTCX suffix denotes a specific package/ordering variant (check the datasheet for exact dimensions and package type, typically MSOP/SOIC in a 20-pin package).

Features

- Octal buffer/driver (A inputs to Y outputs) with 3-state outputs
- Two 4-bit buffers (groups) with independent output-enable inputs (OE1, OE2)
- Outputs go high-impedance when enabled inputs deactivate (tri-state)
- Advanced CMOS logic (74ACT family): high speed, low power
- Supply voltage: 4.5 V to 5.5 V (typical 5.0 V)
- TTL-compatible input thresholds for easy interfacing
- Suitable for bus buffering, data buffering, and inter-chip interfacing
Note: MTCX denotes packaging/lot code variations; function remains as above.

Package

The 74ACT244MTCX is a 20‑pin surface-mount device in a SOIC (Small Outline IC) package.

Pinout

Pin count: 20 pins (DIP/SMD package variants).
Function: 74ACT244MTCX is an octal buffer/line driver with 3-state outputs (two 4-bit buffers). It has inputs A0–A7 and outputs Y0–Y7 with two independent active-low enables (/G1 and /G2) to enable/tri-state the corresponding 4-bit groups. When enables are low, data from A is passed to Y; when high, the outputs are high-impedance. Non-inverting buffers used to drive buses.

Manufacturer

- Manufacturer: Texas Instruments (TI)
- Company type: American multinational corporation that designs and manufactures semiconductors and integrated circuits.

Application

- Octal buffer/driver with two 4-bit sections and tri-state outputs
- Buffers for CPU/memory/address/data buses
- Bus isolation and sharing on backplanes and inter-board buses
- Reduces fan-out/load in high-speed digital circuits
- Peripheral interfacing requiring controlled enable/disable of bus lines

Equivalent

Equivalent parts (octal buffer/line driver with 3-state outputs):
- SN74ACT244 (Texas Instruments)
- 74ACT244 (NXP/Philips)
- uPD74ACT244 (Renesas)
- 74ACT244 (ON Semiconductor)
These are drop-in style cross-references within the 74ACT family. Ensure matching Vcc (typ. 4.5–5.5 V) and identical pinout/package.

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