Overview
The SN74LVTH373PWR is a 3.3-V ABT (Advanced BiCMOS Technology) octal transparent D-type latch produced by Texas Instruments. This component is designed for low-voltage (3.3-V) operation but can also provide a TTL interface to a 5-V system environment. The device features eight latches with 3-state outputs, making it suitable for various digital logic applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP (PW), 20 pins |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage Range (VCC) | -0.5 V to 4.6 V |
| Input Voltage Range (VI) | -0.5 V to 7 V |
| Output Voltage Range (VO) in High-Impedance or Power-Off State | -0.5 V to 7 V |
| Minimum Operating Voltage | 2.7 V |
| Latch-Up Performance | Exceeds 500 mA per JESD 17 |
| ESD Protection | 2000-V Human-Body Model (A114-A), 200-V Machine Model (A115-A) |
Key Features
- Supports mixed-mode signal operation (5-V input and output voltages with 3.3-V VCC)
- Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C
- Supports unregulated battery operation down to 2.7 V
- Ioff and power-up 3-state support for hot insertion
- Bus hold on data inputs eliminates the need for external pullup/pulldown resistors
- Buffered output-enable (OE) input for 3-state outputs
- Active bus-hold circuitry holds unused or undriven inputs at a valid logic state
Applications
The SN74LVTH373PWR is suitable for a variety of digital logic applications, including:
- Low-voltage digital systems requiring TTL compatibility
- Hot-insertion applications where devices need to be powered up or down without causing damage
- Systems requiring bus-hold and 3-state output capabilities
- Battery-operated devices where voltage regulation is not strict
Q & A
- What is the operating voltage range of the SN74LVTH373PWR?
The operating voltage range is from 2.7 V to 3.6 V, with a supply voltage range of -0.5 V to 4.6 V.
- What type of package does the SN74LVTH373PWR come in?
The device comes in a TSSOP (PW) package with 20 pins.
- What is the operating temperature range of the SN74LVTH373PWR?
The operating temperature range is from -40°C to 85°C.
- Does the SN74LVTH373PWR support hot insertion?
Yes, it supports hot insertion with Ioff and power-up 3-state capabilities.
- What is the purpose of the bus-hold circuitry in the SN74LVTH373PWR?
The bus-hold circuitry holds unused or undriven inputs at a valid logic state, eliminating the need for external pullup/pulldown resistors.
- How does the output-enable (OE) input function in the SN74LVTH373PWR?
The OE input can place the eight outputs in either a normal logic state or the high-impedance state, without affecting the internal operations of the latches.
- What level of ESD protection does the SN74LVTH373PWR offer?
The device offers ESD protection exceeding 2000-V Human-Body Model (A114-A) and 200-V Machine Model (A115-A).
- Can the SN74LVTH373PWR operate with unregulated battery power?
Yes, it supports unregulated battery operation down to 2.7 V).
- What is the typical output ground bounce (VOLP) of the SN74LVTH373PWR?
The typical VOLP is less than 0.8 V at VCC = 3.3 V and TA = 25°C).
- Does the SN74LVTH373PWR require external pullup or pulldown resistors?
No, the bus-hold circuitry eliminates the need for external pullup or pulldown resistors).
