Overview
The SN74AHC245DWR is an octal bus transceiver with 3-state outputs, designed by Texas Instruments. This component is part of the SN74AHC245 series and is packaged in a 20-pin SOIC (Small Outline Integrated Circuit) package. It is optimized for asynchronous two-way communication between data buses, making it versatile for various digital systems.
The device operates within a voltage range of 2V to 5.5V, ensuring compatibility with a wide range of digital logic systems. It features high latch-up performance and is designed to meet stringent requirements, including those specified by MIL-PRF-38535 for certain products.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage Range) | –0.5 | 7 | V | |
| VI (Input Voltage Range) | –0.5 | 7 | V | |
| VO (Output Voltage Range) | –0.5 | VCC + 0.5 | V | |
| IOH (Continuous Output Current) | ±25 | mA | ||
| ICC (Continuous Current through VCC or GND) | ±75 | mA | ||
| Tstg (Storage Temperature Range) | –65 | 150 | °C | |
| RθJA (Junction-to-Ambient Thermal Resistance) | 96.2 | °C/W |
Key Features
- Operating voltage range: 2V to 5.5V
- High latch-up performance exceeding 250mA per JESD 17
- 3-state outputs for bus driving or signal isolation
- Output enable (OE) and direction (DIR) control pins
- Low power consumption and high speed operation
- Available in various packages including SOIC, SSOP, TVSOP, PDIP, TSSOP, VSSOP, and VQFN
Applications
- Servers and data centers
- PCs and notebooks
- Network switches and routers
- Wearable health and fitness devices
- Telecom infrastructures
- Electronic points of sale (POS) systems
Q & A
- What is the operating voltage range of the SN74AHC245DWR?
The operating voltage range is from 2V to 5.5V.
- What is the purpose of the DIR and OE pins?
The DIR pin controls the direction of data flow, and the OE pin enables or disables the output.
- What are the thermal characteristics of the SN74AHC245DWR?
The junction-to-ambient thermal resistance (RθJA) is 96.2°C/W for the SOIC package.
- What are the maximum continuous output and input currents?
The maximum continuous output current is ±25 mA, and the maximum continuous current through VCC or GND is ±75 mA.
- What is the storage temperature range for the SN74AHC245DWR?
The storage temperature range is from –65°C to 150°C.
- What are some common applications of the SN74AHC245DWR?
Common applications include servers, PCs, network switches, wearable devices, telecom infrastructures, and electronic POS systems.
- What packages are available for the SN74AHC245?
The component is available in SOIC, SSOP, TVSOP, PDIP, TSSOP, VSSOP, and VQFN packages.
- Does the SN74AHC245DWR meet any specific military standards?
Yes, it meets the requirements specified by MIL-PRF-38535 for certain products.
- What is the latch-up performance of the SN74AHC245DWR?
The latch-up performance exceeds 250mA per JESD 17.
- How many pins does the SN74AHC245DWR have?
The component has 20 pins.
