Overview
The SN74LV245APWR is an octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed for asynchronous communication between data buses, allowing data transmission from the A bus to the B bus or vice versa based on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device, effectively isolating the buses. The SN74LV245APWR operates over a wide voltage range of 2 V to 5.5 V, making it versatile for various applications.
Key Specifications
| Parameter | Unit | Min | Max |
|---|---|---|---|
| Supply Voltage (VCC) | V | 2 | 5.5 |
| High-Level Input Voltage (VIH) | V | VCC × 0.7 | VCC × 0.7 |
| Low-Level Input Voltage (VIL) | V | VCC × 0.3 | VCC × 0.3 |
| Propagation Delay (tpd) | ns | 6.5 (at 5 V) | |
| Output Ground Bounce (VOLP) | V | <0.8 (at VCC = 3.3 V, TA = 25°C) | |
| Output VOH Undershoot (VOHV) | V | >2.3 (at VCC = 3.3 V, TA = 25°C) | |
| ESD Protection | 2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model | ||
| Operating Temperature Range | °C | -40 | 125 |
| Package Type | TSSOP (PW) with 20 pins |
Key Features
- Operates over a wide voltage range of 2 V to 5.5 V
- Maximum propagation delay of 6.5 ns at 5 V
- Supports mixed-mode voltage operation on all ports
- Ioff supports partial-power-down mode operation
- Latch-up performance exceeds 250 mA per JESD 17
- ESD protection exceeds JESD 22 standards
- Allows down voltage translation from 5 V to 3.3 V
- Slow edge rates minimize output ringing
Applications
- Servers
- LED displays
- Network switches
- Telecom infrastructure
- Motor drivers
- I/O expanders
Q & A
- What is the operating voltage range of the SN74LV245APWR?
The SN74LV245APWR operates over a voltage range of 2 V to 5.5 V. - What is the maximum propagation delay at 5 V?
The maximum propagation delay at 5 V is 6.5 ns. - Does the SN74LV245APWR support mixed-mode voltage operation?
Yes, it supports mixed-mode voltage operation on all ports. - What is the ESD protection level of the SN74LV245APWR?
The ESD protection exceeds JESD 22 standards, including 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model. - What is the purpose of the Ioff feature?
The Ioff feature supports partial-power-down mode operation, preventing damaging current backflow through the device when it is powered down. - What are the typical applications of the SN74LV245APWR?
Typical applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders. - How does the SN74LV245APWR minimize output ringing?
The device minimizes output ringing through slow edge rates. - What is the operating temperature range of the SN74LV245APWR?
The operating temperature range is from -40°C to 125°C. - What type of package does the SN74LV245APWR come in?
The SN74LV245APWR comes in a TSSOP (PW) package with 20 pins. - Can the SN74LV245APWR perform down voltage translation?
Yes, it allows down voltage translation from 5 V to 3.3 V.
