SN74CBTLV3257PWR - 4-Channel 2:1 Analog Switch | Texas Instruments
MPN: SN74CBTLV3257PWR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.72 | $7.20 |
| 100 | $0.58 | $58.00 |
| 500 | $0.49 | $245.00 |
| 1,000 | $0.42 | $420.00 |
Drop-in alternatives for SN74CBTLV3257PWR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74CBTLV3257PWG4
β Drop-Inπ Reference alternative (not in catalog)
SN74CBTLV3257-EP
β Drop-Inπ Reference alternative (not in catalog)
74CBTLV3257PW
β Drop-Inπ Reference alternative (not in catalog)
74CBTLV3257
β Drop-Inπ Reference alternative (not in catalog)
SN74CB3Q3257PWR
β Drop-Inπ Reference alternative (not in catalog)
SN74CB3T3257PWR
β Drop-Inπ Reference alternative (not in catalog)
SN74CBTLV3257PWR Maximum Ratings & Electrical Characteristics
| Type | Multiplexer/Demultiplexer |
| Number of Channels | 4 x 1:2 |
| Supply Voltage Range | 2.3 V to 3.6 V |
| ON-State Resistance (Typical) | 5 Ξ© |
| Propagation Delay (Typical) | 0.25 ns |
| Operating Temperature Range | -40Β°C to 85Β°C |
| Package | 16-TSSOP (PW) |
| Package Size | 5 mm Γ 6.4 mm |
| Pitch | 0.65 mm |
| Mounting Type | Surface Mount |
| Number of Circuits | 1 |
| Voltage Supply Source | Single Supply |
| ESD Protection | Exceeds JESD 22 |
| Latch-Up Performance | Exceeds 100 mA per JESD 78, Class II |
| RoHS Status | Compliant |
SN74CBTLV3257PWR Pin Configuration
| Pin 1 | S β Select input |
| Pin 2 | 1A β Channel 1 input/output |
| Pin 3 | 1B1 β Channel 1 input/output |
| Pin 4 | 1B2 β Channel 1 input/output |
| Pin 5 | GND β Ground |
| Pin 6 | 2B2 β Channel 2 input/output |
| Pin 7 | 2B1 β Channel 2 input/output |
| Pin 8 | 2A β Channel 2 input/output |
| Pin 9 | OE β Output enable (active low) |
| Pin 10 | 3A β Channel 3 input/output |
| Pin 11 | 3B1 β Channel 3 input/output |
| Pin 12 | 3B2 β Channel 3 input/output |
| Pin 13 | GND β Ground |
| Pin 14 | 4B2 β Channel 4 input/output |
| Pin 15 | 4B1 β Channel 4 input/output |
| Pin 16 | VCC β Power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74CBTLV3257PWR is suitable for 6 applications: Networking Equipment, Data Acquisition Systems, Test and Measurement, Consumer Electronics, Industrial Automation, Automotive Electronics.
Networking Equipment
The SN74CBTLV3257PWR is ideal for routing high-speed digital signals in networking equipment such as routers and switches. Its low ON-state resistance (5 Ξ©) and fast propagation delay (0.25 ns) minimize signal degradation, ensuring reliable data transmission. The device can switch between redundant paths or select between different data sources, improving system flexibility and fault tolerance. Its wide operating voltage range (2.3 V to 3.6 V) makes it compatible with various logic levels used in networking hardware.
Recommended
Data Acquisition Systems
In data acquisition systems, the SN74CBTLV3257PWR can be used to multiplex multiple analog or digital sensor signals into a single ADC input. Its rail-to-rail switching capability and low ON-resistance ensure accurate signal transfer without significant attenuation. The device's partial-power-down mode is beneficial for power management in battery-powered data loggers, allowing the switch to be isolated when not in use. The 16-TSSOP package is compact, saving board space in multi-channel systems.
Recommended
Test and Measurement
The SN74CBTLV3257PWR is well-suited for test and measurement equipment where signal routing and switching are critical. Its low propagation delay and high bandwidth enable accurate signal integrity in oscilloscopes, logic analyzers, and signal generators. The device can be used to select between different test points or to route signals to different measurement modules. Its over-voltage tolerant inputs protect against accidental overvoltage, enhancing system reliability in lab environments.
Recommended
Consumer Electronics
In consumer electronics, the SN74CBTLV3257PWR is used for audio/video signal routing, peripheral switching, and interface selection. Its low ON-resistance and high bandwidth preserve signal quality in high-definition video and audio applications. The device's small TSSOP package is ideal for space-constrained designs like smartphones, tablets, and portable media players. The partial-power-down mode helps extend battery life by isolating unused signal paths.
Recommended
Industrial Automation
The SN74CBTLV3257PWR is suitable for industrial automation systems that require reliable signal routing in harsh environments. Its wide operating temperature range (-40Β°C to 85Β°C) ensures performance in extreme conditions. The device can be used to multiplex sensor inputs, control signals, or communication lines in PLCs, motor drives, and robotic controllers. Its ESD protection and latch-up immunity enhance robustness against electrical transients common in industrial settings.
Recommended
Automotive Electronics
In automotive electronics, the SN74CBTLV3257PWR is used for signal routing in infotainment systems, body control modules, and advanced driver-assistance systems (ADAS). Its low ON-resistance and fast switching ensure minimal signal delay in critical safety systems. The device's over-voltage tolerance protects against load-dump transients, and its wide temperature range meets automotive requirements. The compact TSSOP package is suitable for space-constrained electronic control units (ECUs).
Recommended
Recommended Products Summary
Engineering reference data for SN74CBTLV3257PWR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74CBTLV3257PWG4 | SN74CBTLV3257-EP | 74CBTLV3257PW | 74CBTLV3257 | SN74CB3Q3257PWR | SN74CB3T3257PWR |
|---|---|---|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Nexperia | Renesas Electronics | Texas Instruments | Texas Instruments |
| ON-State Resistance (Typical) | 5 Ξ© | 5 Ξ© | 5 Ξ© | 5 Ξ© | 5 Ξ© | 3 Ξ© | 5 Ξ© |
| Supply Voltage Range | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Propagation Delay (Typical) | 0.25 ns | 0.25 ns | 0.25 ns | 0.25 ns | 0.25 ns | 0.15 ns | 0.25 ns |
| Operating Temperature Range | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -55Β°C to 125Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C |
| Level Shifting | No | No | No | No | No | No | Yes |
| Automotive Grade | No | No | No | No | No | No | No |
Key Differentiators
- Low ON-state resistance of 5 Ξ© (vs SN74CB3Q3257PWR)
- Wide operating temperature range (vs SN74CBTLV3257-EP)
- Partial-power-down mode (Ioff) (vs 74CBTLV3257PW)
Design Notes
To ensure the high-impedance OFF-state during power-up or power-down, OE should be tied to VCC through a pull-up resistor. The minimum value of the resistor is determined by the current-sinking capability of the driver. This prevents unintended signal contention and ensures reliable system initialization, as recommended in the NXP datasheet.
Place decoupling capacitors (0.1 Β΅F) close to the VCC pin to filter high-frequency noise. Use a solid ground plane to minimize ground bounce and signal crosstalk. Keep signal traces short and matched in length to preserve signal integrity, especially when routing high-speed digital signals through the switch.
The SN74CBTLV3257PWR has low power dissipation due to its CMOS design, but in high-current applications, ensure adequate copper area on the PCB to dissipate heat. The TSSOP package has a thermal resistance of approximately 100Β°C/W; for continuous operation at maximum ratings, provide thermal vias and a ground plane to keep junction temperature within limits.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified. REACH compliance assumed based on TI's global compliance policy.
