Overview
The SN74ALVTH16244VR is a 16-bit buffer/driver integrated circuit produced by Texas Instruments. This device is designed for operation at 2.5-V or 3.3-V VCC but can also interface with a 5-V system environment. It can be configured as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. The device features active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs. It is fully specified for hot-insertion applications and includes power-up 3-state circuitry to prevent driver conflict during power-up and power-down phases.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | V | -0.5 | 4.6 | |
| Input Voltage Range (VI) | V | -0.5 | 7 | |
| Output Current in Low State (IOL) | mA | 128 | ||
| Output Current in High State (IOH) | mA | -64 | ||
| Operating Free-Air Temperature Range | °C | -40 | 85 | |
| High-Level Input Voltage (VIH) at VCC = 3.3 V | V | 2 | 2 | |
| Low-Level Input Voltage (VIL) at VCC = 3.3 V | V | 0.8 | 0.8 | |
| Propagation Delay Time (tPLH) at VCC = 3.3 V, CL = 50 pF | ns | 1 | 2.6 | |
| Propagation Delay Time (tPHL) at VCC = 3.3 V, CL = 50 pF | ns | 1 | 2.6 |
Key Features
- Active bus-hold circuitry to hold unused or floating data inputs at a valid logic level.
- 3-state outputs to facilitate bus operation.
- ESD protection exceeds 2000 V per MIL-STD-883, Method 3015.
- Latch-up performance exceeds 250 mA per JESD 17.
- Hot-insertion capability with Ioff and power-up 3-state circuitry.
- Available in various package options including DL, DGG, DGV, and WD packages.
Applications
- Buffering and driving data in high-speed digital systems.
- Interface between 2.5-V or 3.3-V and 5-V systems.
- Hot-swappable applications where devices need to be inserted or removed while the system is powered on.
- Industrial and commercial applications requiring robust ESD protection and latch-up immunity.
Q & A
- What is the operating voltage range of the SN74ALVTH16244VR?
The operating voltage range is 2.3 V to 2.7 V for 2.5-V operation and 3 V to 3.6 V for 3.3-V operation.
- What is the maximum output current in the low state for the SN74ALVTH16244VR?
The maximum output current in the low state is 128 mA.
- What is the purpose of the active bus-hold circuitry in the SN74ALVTH16244VR?
The active bus-hold circuitry holds unused or floating data inputs at a valid logic level.
- What are the package options available for the SN74ALVTH16244VR?
The device is available in DL, DGG, DGV, and WD packages.
- What is the ESD protection level of the SN74ALVTH16244VR?
The ESD protection exceeds 2000 V per MIL-STD-883, Method 3015.
- Can the SN74ALVTH16244VR be used in hot-insertion applications?
- What is the operating temperature range for the SN74ALVTH16244VR?
The operating temperature range is –40°C to 85°C.
- What are the typical propagation delay times for the SN74ALVTH16244VR at VCC = 3.3 V?
The typical propagation delay times (tPLH and tPHL) are around 1 to 2.6 ns with a 50 pF load.
- How does the power-up 3-state circuitry function in the SN74ALVTH16244VR?
The power-up 3-state circuitry places the outputs in the high-impedance state during power-up and power-down to prevent driver conflict.
- What is the latch-up performance of the SN74ALVTH16244VR?
The latch-up performance exceeds 250 mA per JESD 17.
