Overview
The CD74HCT00ME4 is a high-speed CMOS logic quad 2-input NAND gate integrated circuit produced by Texas Instruments. This device is part of the CD74HCT series, which is designed to be compatible with both LSTTL (Low-power Schottky Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) input logic. It operates within a voltage range of 4.5 V to 5.5 V and has a wide operating temperature range from -55°C to +125°C, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage | 4.5 to 5.5 | V |
| Operating Temperature | -55 to +125 | °C |
| Input Logic Compatibility | LSTTL and CMOS | |
| Input Current (II) | ≤ 1 µA at VOL, VOH | |
| Propagation Delay (tpd) | 20 to 30 ns (CL = 50 pF, VCC = 4.5 V) | ns |
| Transition Time (tt) | 15 to 22 ns (CL = 50 pF, VCC = 4.5 V) | ns |
| Input Capacitance (Ci) | 10 pF | pF |
| Package Types | SOIC (14 pins), PDIP (14 pins), CDIP (14 pins) | |
| Thermal Resistance (RθJA) | 62.8 (PDIP), 91.4 (SOIC) | °C/W |
Key Features
- Buffered inputs for improved signal integrity.
- Significant power reduction compared to LSTTL logic ICs.
- Supports fanout up to 10 LSTTL loads.
- High-speed CMOS logic with low power consumption.
- Wide operating temperature range and voltage compatibility.
Applications
- Alarm and tamper detect circuits.
- S-R latch circuits.
- General logic functions in digital systems.
- Industrial control systems requiring high reliability and temperature stability.
Q & A
- What is the operating voltage range of the CD74HCT00ME4?
The operating voltage range is 4.5 V to 5.5 V. - What are the compatible input logic types for this IC?
The CD74HCT00ME4 is compatible with both LSTTL and CMOS input logic. - What is the propagation delay of the CD74HCT00ME4?
The propagation delay is typically between 20 to 30 ns for a load capacitance of 50 pF at 4.5 V. - What are the package types available for this IC?
The IC is available in SOIC (14 pins), PDIP (14 pins), and CDIP (14 pins) packages. - What is the thermal resistance of the SOIC package?
The thermal resistance (RθJA) for the SOIC package is 91.4 °C/W. - What is the input current (II) at VOL and VOH?
The input current (II) is ≤ 1 µA at VOL and VOH. - What are some typical applications of the CD74HCT00ME4?
Typical applications include alarm and tamper detect circuits, S-R latch circuits, and general logic functions in digital systems. - Is the CD74HCT00ME4 RoHS compliant?
Yes, the CD74HCT00ME4 is RoHS compliant. - What is the fanout capability of the CD74HCT00ME4?
The IC supports fanout up to 10 LSTTL loads. - What is the transition time (tt) of the CD74HCT00ME4?
The transition time (tt) is typically between 15 to 22 ns for a load capacitance of 50 pF at 4.5 V.
