Overview
The 74HC245BQ-Q100X, produced by Nexperia USA Inc., is an 8-bit transceiver with 3-state outputs. This device is part of the 74HC and 74HCT series, known for their versatility in digital logic applications. It features an output enable (OE) and a send/receive (DIR) pin for direction control, allowing for bidirectional data transfer between two buses. The 3-state outputs can be set to a high-impedance OFF-state when the OE pin is HIGH, making it suitable for various bus interface applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC | 2.0 | 6.0 | V | ||
| VIH (HIGH-level input voltage) | VCC = 4.5 V to 5.5 V | 2.0 | 1.6 | 2.0 | V |
| VIL (LOW-level input voltage) | VCC = 4.5 V to 5.5 V | -1.2 | 0.8 | 0.8 | V |
| VOH (HIGH-level output voltage) | IO = -6 mA, VCC = 4.5 V | 3.98 | 4.32 | 3.84 | V |
| tpd (Propagation delay) | VCC = 4.5 V, CL = 15 pF | 9 | 18 | 23 | ns |
| fmax (Maximum frequency) | 36 | MHz | |||
| Operating Temperature | -40 | 125 | °C | ||
| Package | 20-DHVQFN (4.5x2.5) |
Key Features
- Octal Bidirectional Bus Interface: Allows for data transfer in both directions between two buses.
- 3-State Outputs: Outputs can be set to a high-impedance OFF-state when the OE pin is HIGH.
- Output Enable (OE) and Send/Receive (DIR) Control: Enables direction control of data transfer.
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V.
- CMOS Low Power Dissipation: Low power consumption.
- High Noise Immunity: Complies with JEDEC standards for noise immunity.
- ESD Protection: HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- Automotive Qualification: Qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
Applications
The 74HC245BQ-Q100X is suitable for a wide range of applications, including:
- Automotive Systems: Qualified to AEC-Q100 standards, making it suitable for automotive electronics.
- Industrial Control Systems: Used in various industrial control and automation systems.
- Consumer Electronics: Found in consumer devices requiring bidirectional bus interfaces.
- Computing and Networking: Used in computing and networking equipment for data transfer and bus management.
Q & A
- What is the primary function of the 74HC245BQ-Q100X?
The primary function is to act as an 8-bit transceiver with 3-state outputs, enabling bidirectional data transfer between two buses.
- What is the supply voltage range for the 74HC245BQ-Q100X?
The device operates from 2.0 V to 6.0 V.
- What are the key control pins on the 74HC245BQ-Q100X?
The key control pins are the output enable (OE) and the send/receive (DIR) pins.
- What is the significance of the 3-state outputs?
The 3-state outputs can be set to a high-impedance OFF-state when the OE pin is HIGH, allowing for bus interface management.
- Does the 74HC245BQ-Q100X have ESD protection?
Yes, it has ESD protection: HBM exceeds 2000 V and CDM exceeds 1000 V.
- What are the operating temperature ranges for the 74HC245BQ-Q100X?
The device operates from -40°C to +125°C.
- Is the 74HC245BQ-Q100X qualified for automotive applications?
Yes, it is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
- What is the package type of the 74HC245BQ-Q100X?
The package type is 20-DHVQFN (4.5x2.5).
- What are the input levels for the 74HC245BQ-Q100X?
For 74HC245: CMOS level, For 74HCT245: TTL level.
- What is the maximum frequency of operation for the 74HC245BQ-Q100X?
The maximum frequency is 36 MHz.
