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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | 74HCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 7.2mA, 7.2mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP |
| ROHS |  |
The MM74HCT240MTC is a dual-channel inverting buffer from Fairchild Semiconductor, part of the 74HCT logic family. It operates at a supply voltage of 4.5V to 5.5V and provides 3-State outputs for bus-oriented applications. Each output can source or sink 7.2mA, making it suitable for driving moderate loads. The 20-TSSOP package is compact for space-constrained designs. Typical applications include bus interfacing, signal buffering, and level shifting in 5V digital systems.
- TTL-Compatible Inputs: Directly interfaces with 5V TTL logic without additional circuitry, simplifying design.
- 3-State Outputs: Enables bus sharing and multiplexing, reducing the need for external isolation components.
- Wide Temperature Range: Operates from -40°C to 85°C, suitable for industrial and automotive environments.
- Compact TSSOP Package: Saves board space in high-density designs.
5V Bus Interfacing
Use the MM74HCT240MTC to buffer and invert signals between 5V microcontrollers and peripheral devices, ensuring robust signal integrity on data buses.
Memory Address Driving
Drive high-capacitance memory address lines with the 3-State outputs, preventing signal degradation and allowing multiple memory banks to share the bus.
TTL-to-CMOS Level Shifting
With TTL-compatible inputs, this buffer can interface TTL logic levels to CMOS devices operating at 5V, simplifying mixed-logic designs.
Industrial Control Signal Buffering
In industrial PLCs, buffer and invert control signals from sensors to logic controllers, providing isolation and driving capability for longer cable runs.
Test Equipment Channel Isolation
Use the 3-State feature to isolate multiple test channels, preventing back-drive and allowing safe multiplexing of measurement signals.
Automotive ECU Signal Conditioning
Buffer and invert engine control signals in automotive ECUs, operating reliably across the -40°C to 85°C temperature range.
- Q: What logic family does the MM74HCT240MTC belong to?
- A: It belongs to the 74HCT logic family, which is TTL-compatible and operates at 4.5V to 5.5V.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 2 channels, providing signal inversion and buffering.
- Q: What is the output type?
- A: It features 3-State outputs, allowing connection to shared buses with high-impedance states.
- Q: What is the voltage range?
- A: The supply voltage range is 4.5V to 5.5V, making it ideal for 5V systems.
- Q: What is the output current capability?
- A: It can source or sink 7.2mA per output.
- Q: What package is available?
- A: It comes in a 20-TSSOP package (0.173", 4.40mm Width).
MM74HCT240MTC.pdf
- Q: What logic family does the MM74HCT240MTC belong to?
- A: It belongs to the 74HCT logic family, which is TTL-compatible and operates at 4.5V to 5.5V.
- Q: What is the function of this IC?
- A: It is an inverting buffer with 2 channels, providing signal inversion and buffering.
- Q: What is the output type?
- A: It features 3-State outputs, allowing connection to shared buses with high-impedance states.
- Q: What is the voltage range?
- A: The supply voltage range is 4.5V to 5.5V, making it ideal for 5V systems.
- Q: What is the output current capability?
- A: It can source or sink 7.2mA per output.
- Q: What package is available?
- A: It comes in a 20-TSSOP package (0.173", 4.40mm Width).