Overview
The SN74LVC245AN, produced by Texas Instruments, is an octal bus transceiver with 3-state outputs designed for asynchronous communication between data buses. This device operates within a voltage range of 1.65 V to 3.6 V, making it versatile for various applications. It is capable of transmitting data from the A bus to the B bus or from the B bus to the A bus, controlled by the direction-control (DIR) input. The SN74LVC245AN supports mixed-mode signal operation on all ports, allowing for 5-V input/output voltage with a 3.3-V VCC, and features partial-power-down mode and back drive protection.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Supply Voltage Range | -0.5 to 6.5 | V | |
| Input Voltage Range | -0.5 to 6.5 | V | |
| Operating Temperature Range | -40 to 125 | °C | |
| Propagation Delay Time (tpd) at 3.3 V | 6.3 | ns | |
| Output Ground Bounce (VOLP) at VCC = 3.3 V, TA = 25°C | < 0.8 | V | |
| Output VOH Undershoot (VOHV) at VCC = 3.3 V, TA = 25°C | > 2 | V | |
| ESD Protection | 2000-V Human-Body Model, 1000-V Charged-Device Model | ||
| Latch-Up Performance | > 250 mA per JESD 17 |
Key Features
- Operates from 1.65 V to 3.6 V
- Inputs accept voltages to 5.5 V
- Maximum propagation delay time of 6.3 ns at 3.3 V
- Typical output ground bounce (VOLP) < 0.8 V at VCC = 3.3 V, TA = 25°C
- Typical output VOH undershoot (VOHV) > 2 V at VCC = 3.3 V, TA = 25°C
- Supports live insertion, partial-power-down mode, and back drive protection
- Supports mixed-mode signal operation on all ports (5-V input/output voltage with 3.3-V VCC)
- ESD protection exceeds JESD 22 – 2000-V Human-Body Model and 1000-V Charged-Device Model
- Latch-up performance exceeds 250 mA per JESD 17
Applications
- Cable Modem Termination Systems
- Servers
- LED Displays
- Network Switches
- Telecom Infrastructure
- Motor Drivers
- I/O Expanders
Q & A
- What is the operating voltage range of the SN74LVC245AN?
The SN74LVC245AN operates from 1.65 V to 3.6 V.
- What is the maximum propagation delay time at 3.3 V?
The maximum propagation delay time at 3.3 V is 6.3 ns.
- What is the typical output ground bounce (VOLP) at VCC = 3.3 V, TA = 25°C?
The typical output ground bounce (VOLP) is less than 0.8 V at VCC = 3.3 V, TA = 25°C.
- Does the SN74LVC245AN support mixed-mode signal operation?
Yes, it supports mixed-mode signal operation on all ports (5-V input/output voltage with 3.3-V VCC).
- What is the ESD protection level of the SN74LVC245AN?
The ESD protection exceeds JESD 22 – 2000-V Human-Body Model and 1000-V Charged-Device Model.
- What are some common applications of the SN74LVC245AN?
Common applications include cable modem termination systems, servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the latch-up performance of the SN74LVC245AN?
The latch-up performance exceeds 250 mA per JESD 17.
- Does the SN74LVC245AN support partial-power-down mode?
Yes, it supports live insertion, partial-power-down mode, and back drive protection.
- What are the available package types for the SN74LVC245AN?
The available packages include PDIP (N), VQFN, SSOP, TSSOP, TVSOP, and SOIC.
- What is the operating temperature range of the SN74LVC245AN?
The operating temperature range is -40°C to 125°C.
