Overview
The SN74LVC4245AIPWREP is an octal bus transceiver and voltage level translator manufactured by Texas Instruments. This device is designed for asynchronous communication between data buses, allowing for bidirectional translation between 3.3-V and 5-V environments. It features eight noninverting channels and is packaged in a 24-pin TSSOP (Thin Shrink Small Outline Package).
The SN74LVC4245AIPWREP is part of the LVC (Low-Voltage CMOS) family, known for its low power consumption and high performance. It includes two separate supply rails: VCCA for the A port (set at 5 V) and VCCB for the B port (set at 3.3 V), enabling seamless data transmission between these voltage levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TSSOP (PW) | - |
| Pins | 24 | - |
| Operating Temperature Range | -40 to 85 | °C |
| VCCA Supply Voltage Range | 4.5 to 5.5 | V |
| VCCB Supply Voltage Range | 2.7 to 3.6 | V |
| High-Level Input Voltage (VIH) | 2 | V |
| Low-Level Input Voltage (VIL) | 0.8 | V |
| High-Level Output Current (IOH) | -24 | mA |
| Low-Level Output Current (IOL) | 24 | mA |
| Propagation Delay Time (tPHL/tPLH) | 6.1 to 6.7 | ns |
| ESD Protection | 2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model | - |
Key Features
- Bidirectional Voltage Translator: Translates data between 3.3-V and 5-V environments.
- Controlled Baseline: One assembly/test site, one fabrication site.
- Enhanced Diminishing Manufacturing Sources (DMS) Support: Ensures long-term availability.
- Enhanced Product-Change Notification: Provides advance notice of product changes.
- Qualification Pedigree: Meets JEDEC and industry standards for reliability.
- Latch-Up Performance: Exceeds 250 mA per JESD 17.
- ESD Protection: Exceeds JESD 22 standards (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- 3-State Outputs: Allows for output enable/disable functionality.
- Pin Compatibility: Compatible with conventional 20-pin '245 devices without board re-layout.
Applications
- Data Bus Translation: Ideal for translating data between different voltage level systems in various electronic devices.
- Mixed Voltage Systems: Suitable for use in systems that require communication between 3.3-V and 5-V components.
- Embedded Systems: Used in embedded systems where voltage level translation is necessary.
- Industrial Automation: Applied in industrial automation systems that require reliable data transmission across different voltage levels.
- Consumer Electronics: Found in consumer electronics such as smartphones, tablets, and other portable devices that may require voltage level translation.
Q & A
- What is the primary function of the SN74LVC4245AIPWREP?
The primary function is to act as an octal bus transceiver and voltage level translator between 3.3-V and 5-V environments.
- What package type does the SN74LVC4245AIPWREP come in?
It comes in a 24-pin TSSOP (Thin Shrink Small Outline Package).
- What is the operating temperature range of the SN74LVC4245AIPWREP?
The operating temperature range is from -40°C to 85°C.
- What are the supply voltage ranges for VCCA and VCCB?
VCCA ranges from 4.5 V to 5.5 V, and VCCB ranges from 2.7 V to 3.6 V.
- Does the SN74LVC4245AIPWREP have ESD protection?
Yes, it exceeds JESD 22 standards with 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model protection.
- Can the SN74LVC4245AIPWREP be used in place of a conventional 20-pin '245 device?
Yes, it is pin-compatible with conventional 20-pin '245 devices without requiring board re-layout.
- What is the purpose of the DIR and OE inputs?
The DIR input controls the direction of data transmission, and the OE input can be used to disable the device, effectively isolating the buses.
- What are some common applications of the SN74LVC4245AIPWREP?
Common applications include data bus translation in mixed voltage systems, embedded systems, industrial automation, and consumer electronics.
- Does the SN74LVC4245AIPWREP meet any specific industry standards?
Yes, it meets JEDEC and industry standards for reliability and qualification.
- How many channels does the SN74LVC4245AIPWREP have?
It has eight bidirectional channels.
