Overview
The SN74CBTLV3257DGVR is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer produced by Texas Instruments. This device is designed to control data flow through its select (S) input and is enabled when the output-enable (OE) input is low. It operates within a temperature range of -40°C to 85°C, making it suitable for a wide range of applications. The SN74CBTLV3257 is known for its low on-state resistance, allowing connections with minimal propagation delay, and it supports partial-power-down mode operation with the Ioff feature to prevent damaging current backflow when powered down.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2.3 | 3.6 | V | |
| VIH High-Level Input Voltage (VCC = 2.3 V to 2.7 V) | 1.7 | V | ||
| VIL Low-Level Input Voltage (VCC = 2.3 V to 2.7 V) | 0.7 | V | ||
| Operating Temperature Range | -40 | 85 | °C | |
| On-State Resistance | 5 | Ω | ||
| ESD Protection | > 2000 V | HBM (Human-Body Model) | ||
| Package | TVSOP (DGV) | |||
| Pins | 16 |
Key Features
- 5-Ω switch connection between two ports, allowing for minimal propagation delay.
- Rail-to-rail switching on data I/O ports.
- Supports partial-power-down mode operation using Ioff, ensuring no damaging current backflow when powered down.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- ESD protection exceeds JESD 22, with > 2000 V Human-Body Model and > 200 V Machine Model.
- Isolation during power-off conditions.
- Overvoltage tolerant.
Applications
The SN74CBTLV3257 is versatile and can be used in various applications, including:
- High-speed data switching and routing in telecommunications and networking equipment.
- Signal multiplexing and demultiplexing in industrial control systems.
- Low-voltage logic circuits requiring minimal power consumption and high-speed operation.
- Partial-power-down applications where power management is critical.
Q & A
- What is the operating temperature range of the SN74CBTLV3257?
The operating temperature range is -40°C to 85°C.
- What is the typical on-state resistance of the SN74CBTLV3257?
The typical on-state resistance is 5 Ω.
- How does the Ioff feature work in the SN74CBTLV3257?
The Ioff feature ensures that no damaging current backflows through the device when it is powered down, providing isolation during power-off conditions.
- What is the ESD protection level of the SN74CBTLV3257?
The ESD protection exceeds 2000 V Human-Body Model and 200 V Machine Model.
- What package types are available for the SN74CBTLV3257?
The device is available in 16-pin TVSOP (DGV), QSOP, and TSSOP packages.
- How is the data flow controlled in the SN74CBTLV3257?
The data flow is controlled by the select (S) input, and the device is enabled when the output-enable (OE) input is low.
- What is the supply voltage range for the SN74CBTLV3257?
The supply voltage range is 2.3 V to 3.6 V.
- Is the SN74CBTLV3257 overvoltage tolerant?
Yes, the device is overvoltage tolerant.
- What is the latch-up performance of the SN74CBTLV3257?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
- How should the OE input be managed during power-up or power-down?
The OE input should be tied to VCC through a pullup resistor to ensure a high-impedance state during power-up or power-down.
