Overview
The SN74LV245ANSRG4 is an octal bus transceiver with 3-state outputs, designed and manufactured by Texas Instruments. This device is part of the LV-A technology family and is optimized for asynchronous communication between data buses. It can transmit data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input allows for disabling the device, effectively isolating the buses. The SN74LV245ANSRG4 supports a wide range of operating voltages from 2 V to 5.5 V, making it versatile for various applications.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC (Supply Voltage) | V | 2 | 5.5 | |
| VIH (High-Level Input Voltage) | V | VCC × 0.7 | VCC × 0.7 | |
| VIL (Low-Level Input Voltage) | V | VCC × 0.3 | VCC × 0.3 | |
| VI (Input Voltage) | V | 0 | 5.5 | |
| VO (Output Voltage) | V | 0 | VCC | |
| tpd (Propagation Delay) at 5 V | ns | 6.5 | ||
| ICC (Quiescent Current) at Nominal Voltage | mA | 0.02 | ||
| Operating Temperature Range | °C | -40 | 125 | |
| Output Drive (IOL/IOH) | mA | -50 | 50 | |
| ESD Protection | V | 2000 (Human-Body Model), 200 (Machine Model), 1000 (Charged-Device Model) |
Key Features
- 2-V to 5.5-V VCC operation, allowing for mixed-mode voltage operation on all ports.
- Maximum propagation delay (tpd) of 6.5 ns at 5 V.
- Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C.
- Typical VOHV (output VOH undershoot) > 2.3 V at VCC = 3.3 V, TA = 25°C.
- Ioff supports partial-power-down mode operation, preventing damaging current backflow when powered down.
- 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).
- Slow edge rates minimize output ringing.
- Allows down voltage translation from 5 V to 3.3 V.
Applications
- Servers
- LED displays
- Network switches
- Telecom infrastructure
- Motor drivers
- I/O expanders
Q & A
- What is the operating voltage range of the SN74LV245ANSRG4? The operating voltage range is from 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.
- What is the typical output ground bounce at VCC = 3.3 V and TA = 25°C? The typical output ground bounce is less than 0.8 V.
- Does the SN74LV245ANSRG4 support partial-power-down mode operation? Yes, it supports partial-power-down mode operation using Ioff.
- What is the latch-up performance of the SN74LV245ANSRG4? The latch-up performance exceeds 250 mA per JESD 17.
- What kind of ESD protection does the SN74LV245ANSRG4 have? It has ESD protection exceeding JESD 22 standards (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- What are the typical applications of the SN74LV245ANSRG4? Typical applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- How does the SN74LV245ANSRG4 handle output ringing? It minimizes output ringing through slow edge rates.
- Can the SN74LV245ANSRG4 perform down voltage translation? Yes, it allows down voltage translation from 5 V to 3.3 V.
- What is the operating temperature range of the SN74LV245ANSRG4? The operating temperature range is from -40°C to 125°C.
