Overview
The Texas Instruments SN74AHCT245DBR is an octal bus transceiver designed for asynchronous two-way communication between data buses. This device is part of the SNx4AHCT245 series and is optimized for high-speed data transfer applications. It operates within a voltage range of 4.5 V to 5.5 V, making it forgiving of 5-V power supply rail accuracy. The SN74AHCT245DBR features advanced logic integration, fast switching speeds, and compact packaging, making it suitable for various industries such as industrial control, automotive, and telecommunications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | - | 5.5 | V |
| Number of Channels | 8 | - | - | - |
| Output Drive at 5 V | ±6 | - | - | mA |
| Propagation Delay (tpd) at 5 V, CL = 50 pF | 14 | - | 30 | ns |
| Input Current | - | - | 1 | µA |
| Static Supply Current (ICC) | - | - | 80 | µA |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | SSOP (DB) | - |
Key Features
- Advanced logic integration for high-speed data transfer applications.
- Fast switching speed with typical propagation delay of 14 ns at 5 V and CL = 50 pF.
- Compact package design, available in SSOP (DB) package.
- TTL-voltage compatible inputs.
- High-current 3-state outputs capable of driving up to 15 LSTTL loads.
- Low power consumption with a maximum static supply current of 80 µA.
- Active low output enable and direction control for flexible data transmission.
- Center VCC and GND pin configurations to minimize high-speed switching noise.
- Voltage operating range from 4.5 V to 5.5 V, allowing for voltage translation from 3.3 V to 5 V.
Applications
- Factory Automation and Control
- Grid Infrastructure
- Electronic Point of Sale
- Multi-Function Printers
- Motor Drives
- Storage
- Telecom Infrastructure
- Industrial Control
- Automotive
Q & A
- What is the operating voltage range of the SN74AHCT245DBR?
The operating voltage range is from 4.5 V to 5.5 V.
- How many channels does the SN74AHCT245DBR have?
The device has 8 channels.
- What is the typical propagation delay of the SN74AHCT245DBR at 5 V and CL = 50 pF?
The typical propagation delay is 14 ns.
- What is the maximum static supply current of the SN74AHCT245DBR?
The maximum static supply current is 80 µA.
- What type of package is the SN74AHCT245DBR available in?
The device is available in an SSOP (DB) package.
- Are the inputs of the SN74AHCT245DBR TTL-voltage compatible?
- Can the SN74AHCT245DBR drive LSTTL loads?
- How does the SN74AHCT245DBR minimize high-speed switching noise?
- What is the purpose of the direction control and output enable inputs in the SN74AHCT245DBR?
The direction control input determines the direction of data transmission between the A and B buses, while the output enable input can be used to disable the device and isolate the buses.
- In what temperature range can the SN74AHCT245DBR operate?
