사양
| 속성 | 가치 |
| 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) |
개요
Description
74ACT244MTCX is an octal buffer/driver (3-state) from the 74ACT family. It provides two 4‑bit, non‑inverting buffers with tri‑state outputs, buffering data from inputs A0–A7 to outputs Y0–Y7.
- Enable control: two active-low enables (G1 and G2). When both are low, all eight outputs follow the inputs; if either enable is high, the corresponding 4 outputs go high impedance, enabling shared-bus operation.
- Specs: operates on a single 4.5–5.5 V supply; TTL-compatible input thresholds; high-speed CMOS performance.
- Packaging: MTCX denotes a specific package variant (check datasheet for exact pinout, typically a small-outline package such as SOIC/TSSOP).
- Pinout basics (variant-dependent): A0–A7, Y0–Y7, G1, G2, Vcc, Gnd.
- Uses: buffer or isolate 8-bit data/address buses, level-shifting between devices, reduce load on drivers.
Note: always consult the manufacturer datasheet for the exact pinout and package details for your MTCX variant.
- Enable control: two active-low enables (G1 and G2). When both are low, all eight outputs follow the inputs; if either enable is high, the corresponding 4 outputs go high impedance, enabling shared-bus operation.
- Specs: operates on a single 4.5–5.5 V supply; TTL-compatible input thresholds; high-speed CMOS performance.
- Packaging: MTCX denotes a specific package variant (check datasheet for exact pinout, typically a small-outline package such as SOIC/TSSOP).
- Pinout basics (variant-dependent): A0–A7, Y0–Y7, G1, G2, Vcc, Gnd.
- Uses: buffer or isolate 8-bit data/address buses, level-shifting between devices, reduce load on drivers.
Note: always consult the manufacturer datasheet for the exact pinout and package details for your MTCX variant.
Equivalent
Equivalent parts (octal buffer/line driver, 3-state) to 74ACT244MTCX include:
- SN74ACT244 (Texas Instruments)
- SN54ACT244 (TI military/commercial cross-ref)
- DM74ACT244 (TI military)
- MC74ACT244 (ON Semiconductor)
- 74ACT244 (Nexperia)
These are functionally the same; verify packaging (MTCX) and temperature/rating in datasheets for pinout and specs.
- SN74ACT244 (Texas Instruments)
- SN54ACT244 (TI military/commercial cross-ref)
- DM74ACT244 (TI military)
- MC74ACT244 (ON Semiconductor)
- 74ACT244 (Nexperia)
These are functionally the same; verify packaging (MTCX) and temperature/rating in datasheets for pinout and specs.
Features
Key features of 74ACT244MTCX:
- Octal buffer/line driver with 3-state outputs (two 4-bit buffers)
- Non-inverting data path (I to Y)
- Independent, active-low output enables: OE1 and OE2
- 5V tolerant TTL/CMOS input compatibility
- Supply voltage: typically 4.5V to 5.5V
- High-speed Advanced CMOS (ACT) family performance
- Outputs can be driven high or low and placed in high-impedance for bus sharing
- Suitable for buffering/address/data buses and isolating devices
- Package: 20-pin device in MTCX (Tape-and-Reel/SMD variant) form factor
Note: Exact propagation delays and drive specs depend on the device variant and operating conditions.
- Octal buffer/line driver with 3-state outputs (two 4-bit buffers)
- Non-inverting data path (I to Y)
- Independent, active-low output enables: OE1 and OE2
- 5V tolerant TTL/CMOS input compatibility
- Supply voltage: typically 4.5V to 5.5V
- High-speed Advanced CMOS (ACT) family performance
- Outputs can be driven high or low and placed in high-impedance for bus sharing
- Suitable for buffering/address/data buses and isolating devices
- Package: 20-pin device in MTCX (Tape-and-Reel/SMD variant) form factor
Note: Exact propagation delays and drive specs depend on the device variant and operating conditions.
Pinout
- Pin count: 20 pins (DIP-20/SOIC-20, as used in 74ACT244MTCX).
- Function: Octal buffer/driver with 3-state (tri-state) outputs. It provides eight buffering paths from A0–A7 to Y0–Y7. It has two active-low enable inputs (G1 and G2); when both enables are low, data passes to the outputs; when either enable is high, the outputs are high-impedance.
- Function: Octal buffer/driver with 3-state (tri-state) outputs. It provides eight buffering paths from A0–A7 to Y0–Y7. It has two active-low enable inputs (G1 and G2); when both enables are low, data passes to the outputs; when either enable is high, the outputs are high-impedance.
Manufacturer
Manufacturer: Nexperia. It is a Dutch multinational semiconductor company focused on discrete components, logic devices, and power devices (originating from Philips/NXP Semiconductors).
Application
74ACT244MTCX is an octal buffer/line driver with 3-state outputs. Typical applications:
- Interface and buffer microprocessor address/data buses and memory/I/O peripherals
- Isolate and gate signals on shared buses using enable lines
- Increase drive capacity and improve signal integrity when driving multiple loads
- Buffer between TTL/CMOS devices to improve noise immunity and fan-out
- Used in backplanes, motherboards, and digital instruments for fast, reliable data transfer
- Interface and buffer microprocessor address/data buses and memory/I/O peripherals
- Isolate and gate signals on shared buses using enable lines
- Increase drive capacity and improve signal integrity when driving multiple loads
- Buffer between TTL/CMOS devices to improve noise immunity and fan-out
- Used in backplanes, motherboards, and digital instruments for fast, reliable data transfer
Package
20-pin Plastic Small-Outline (SOIC) package. The MTCX suffix indicates TI’s 0.300" wide, 20‑lead SOIC (tape/reel option).
