Texas Instruments SN74HCT645DWR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.41 | $1.41 |
| 15+ | $1.36 | $20.40 |
| 25+ | $1.33 | $33.25 |
| 50+ | $1.26 | $63.00 |
| 100+ | $1.11 | $111.00 |
| N+ | $0.22 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74HCT |
| Packaging | Marketplace | Cut Tape (CT) |
| Part Status | Active |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 6mA, 6mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC |
| ROHS |  |
The SN74HCT645DWR is a high-performance octal bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between two data buses. Operating within a 4.5V to 5.5V supply range, it features non-inverting 3-State outputs and a typical output current of 6mA. Its 74HCT logic family ensures TTL-compatible inputs, making it ideal for 5V systems. This device is commonly used in bus interfacing, memory systems, and industrial control applications where reliable data transfer is critical.
- TTL-Compatible Inputs: Directly interfaces with legacy TTL logic without extra components, simplifying design.
- 3-State Outputs: Allows multiple devices to share a bus safely, preventing data corruption.
- Wide Temperature Range: Operates from -40°C to 85°C, suitable for industrial environments.
- Bidirectional Operation: Reduces component count by handling data flow in both directions with one IC.
5V Bus Interfacing
Use the SN74HCT645DWR to interface between two 5V buses in microprocessor systems. Its 3-State outputs prevent bus contention when multiple devices share the line.
Bidirectional Data Transfer
In memory or peripheral systems, this transceiver enables bidirectional data flow with a single direction control pin, simplifying PCB layout and reducing component count.
Signal Buffering for High-Capacitance Loads
With 6mA output drive, it can buffer signals to drive multiple loads or long traces, maintaining signal integrity in noisy industrial environments.
Level Shifting from TTL to CMOS
As a 74HCT device, it accepts TTL-level inputs and provides CMOS-level outputs, making it perfect for mixed-logic systems.
Automotive ECU Communication
In automotive ECUs, this transceiver handles communication between the main controller and peripheral modules, operating reliably across -40°C to 85°C.
Industrial Control Logic
For PLCs and industrial controllers, it provides robust bidirectional buffering for control signals, ensuring stable operation in harsh conditions.
- Q: What is the logic family of the SN74HCT645DWR?
- A: It belongs to the 74HCT family, which is TTL-compatible and operates at 5V.
- Q: What is the function of this IC?
- A: It is an octal bus transceiver with non-inverting outputs, allowing bidirectional data flow.
- Q: How many channels does it have?
- A: It has 8 channels (1 byte), controlled by a single direction pin.
- Q: What is the output type?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it ideal for 5V systems.
- Q: What package is available?
- A: It comes in a 20-SOIC (7.50mm width) package.
SN74HCT645DWR.pdf
- Q: What is the logic family of the SN74HCT645DWR?
- A: It belongs to the 74HCT family, which is TTL-compatible and operates at 5V.
- Q: What is the function of this IC?
- A: It is an octal bus transceiver with non-inverting outputs, allowing bidirectional data flow.
- Q: How many channels does it have?
- A: It has 8 channels (1 byte), controlled by a single direction pin.
- Q: What is the output type?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it ideal for 5V systems.
- Q: What package is available?
- A: It comes in a 20-SOIC (7.50mm width) package.
