Overview
The SN74CBTLV3257 device, produced by Texas Instruments, is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer. This component is designed to facilitate low on-state resistance, allowing connections to be made with minimal propagation delay. The device is controlled by a select (S) input that manages the data flow, and it is disabled when the output-enable (OE) input is high. It is fully specified for partial-power-down applications, ensuring isolation during power-off and preventing backflow of damaging current through the device.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D), TVSOP (DGV) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 2.3 to 3.6 | V |
| On-State Resistance | 5 Ω | Ω |
| ESD Protection | 2000-V Human-Body Model, 200-V Machine Model | - |
| Latch-Up Performance | Exceeds 100 mA Per JESD 78, Class II | - |
Key Features
- 5-Ω switch connection between two ports
- Rail-to-rail switching on data I/O ports
- Supports partial-power-down mode operation with Ioff
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- ESD protection exceeds JESD 22: 2000-V Human-Body Model, 200-V Machine Model
- Isolation during power-off conditions
Applications
The SN74CBTLV3257 is suitable for various high-speed switching applications, including but not limited to:
- LVDS (Low-Voltage Differential Signaling) systems
- High-speed data transmission and routing
- Partial-power-down systems where isolation during power-off is critical
- Industrial and automotive applications requiring robust ESD protection and latch-up performance
Q & A
- What is the primary function of the SN74CBTLV3257?
The SN74CBTLV3257 is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer.
- What is the operating temperature range of the SN74CBTLV3257?
The operating temperature range is -40°C to 85°C.
- What is the on-state resistance of the switch in the SN74CBTLV3257?
The on-state resistance is 5 Ω.
- Does the SN74CBTLV3257 support partial-power-down mode?
Yes, it supports partial-power-down mode with Ioff feature.
- What type of ESD protection does the SN74CBTLV3257 offer?
The device offers ESD protection exceeding JESD 22: 2000-V Human-Body Model, 200-V Machine Model.
- How is the data flow controlled in the SN74CBTLV3257?
The data flow is controlled by the select (S) input.
- What happens when the output-enable (OE) input is high?
The FET multiplexers/demultiplexers are disabled when the output-enable (OE) input is high.
- What is the supply voltage range for the SN74CBTLV3257?
The supply voltage range is 2.3 V to 3.6 V.
- What type of packages is the SN74CBTLV3257 available in?
The device is available in SOIC (D) and TVSOP (DGV) packages.
- How should the OE input be configured during power up or power down?
The OE input should be tied to VCC through a pullup resistor to ensure a high-impedance state.
