Overview
The 74HC245D is a high-speed CMOS octal bus transceiver fabricated with silicon gate C2MOS technology. It is designed for two-way asynchronous communication between data buses and is part of the 74HC CMOS logic IC series. This device is known for its high speed operation, similar to equivalent LSTTL, while maintaining the low power dissipation characteristic of CMOS technology. The 74HC245D is produced by Toshiba Semiconductor and Storage and is widely available from various distributors.
Key Specifications
| Characteristics | Symbol | Condition | Value | Unit |
|---|---|---|---|---|
| Supply voltage (Max) | VCC | - | 6 | V |
| Supply voltage (Min) | VCC | - | 2 | V |
| Operating temperature | Topr | - | -40 to 125 | ℃ |
| Propagation delay time (Typ.) | tpd_tpz | VCC=5V | 10 | ns |
| Power Dissipation | PD | - | 500 | mW |
| Package | - | - | SOIC20 | - |
| Pins | - | - | 20 | - |
| Mounting | - | - | Surface Mount | - |
| Dimensions (mm) | - | - | 13.1×10.3×2.25 | - |
Key Features
- High Speed Operation: Achieves high speed similar to LSTTL while maintaining low power dissipation of CMOS technology.
- Low Power Dissipation: Maximum quiescent supply current of 4.0 µA at 25°C.
- Wide Operating Voltage Range: Operates from 2V to 6V.
- Balanced Propagation Delays: Symmetrical output impedance with tPLH ≈ tPHL.
- 3-State Output: Non-inverting 3-state outputs for bus isolation.
- High Noise Immunity: Ensures data integrity with high immunity to noise.
- Bidirectional Communication: Supports two-way asynchronous communication between data buses.
Applications
- Data Communication: Suitable for various data communication applications.
- Control Systems: Used in control systems requiring high-speed and low-power logic operations.
- Microprocessor Bus Interfaces: Ideal for interfacing microprocessors with other components.
- Computer Memory Routing: Used in computer memory routing and other bus-oriented applications).
Q & A
- What is the primary function of the 74HC245D? The 74HC245D is an octal bus transceiver designed for two-way asynchronous communication between data buses.
- What is the operating voltage range of the 74HC245D? The device operates from 2V to 6V).
- What is the typical propagation delay time of the 74HC245D? The typical propagation delay time is 10 ns at VCC=5V).
- What type of package does the 74HC245D come in? The 74HC245D comes in a SOIC20 package).
- What is the operating temperature range of the 74HC245D? The device operates from -40°C to 125°C).
- Is the 74HC245D RoHS compliant? Yes, the 74HC245D is RoHS compliant).
- What are the key features of the 74HC245D? Key features include high speed operation, low power dissipation, balanced propagation delays, and high noise immunity).
- What are some common applications of the 74HC245D? Common applications include data communication, control systems, microprocessor bus interfaces, and computer memory routing).
- How many pins does the 74HC245D have? The 74HC245D has 20 pins).
- What is the mounting type of the 74HC245D? The 74HC245D is a surface mount device).
