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NXP Semiconductors CBTS3257PW,112
- Part No.:
- CBTS3257PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CBTS3257PW,112.pdf
- Description:
- IC MUX/DEMUX 4 X 2:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,796
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Product details
Overview
CBTS3257PW,112 from NXP Semiconductors (formerly Philips) is a quad 1-of-2 TTL-compatible analog multiplexer/demultiplexer with Schottky diode I/O clamping. It features 5 Ω on-resistance, <0.25 ns propagation delay through the switch path, and operates from –40 °C to +85 °C at 4.5–5.5 V supply. It is used in high-speed digital signal routing for test equipment and logic-level translation interfaces.
For engineers reviewing the CBTS3257PW,112 datasheet, CBTS3257PW,112 pinout, CBTS3257PW,112 application, or CBTS3257PW,112 equivalent, key selection criteria include on-resistance matching across channels, undershoot protection via integrated Schottky diodes, 3-state output control timing, and compatibility with 5 V TTL logic families in compact TSSOP packaging.
Technical Context
The CBTS3257PW,112 implements four independent bidirectional 1-of-2 analog switches, each controlled by a shared select input (S) and global output enable (OE). Its low on-resistance ensures minimal voltage drop and ground bounce during signal switching.
Each channel supports bidirectional signal flow between A-inputs and B-outputs, with Schottky diodes providing undershoot protection on all I/O pins. The device uses standard TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and delivers sub-5 ns enable/disable times under 50 pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (ron) | 5 Ω typical at VCC = 4.5 V - enables low-loss analog/digital signal routing without significant voltage drop |
| Propagation delay (A↔B) | <0.25 ns - negligible timing impact when routing high-speed logic signals |
| Supply voltage range | 4.5 V to 5.5 V - compatible with standard 5 V TTL and CMOS systems |
| Operating temperature | –40 °C to +85 °C - suitable for industrial-grade embedded control and instrumentation |
| I/O clamp current | ±50 mA - protects against transient undershoot events via internal Schottky diodes |
| Off capacitance (B port) | 6.4 pF - minimizes crosstalk and loading in high-frequency multiplexed bus applications |
| Output enable time (ten) | 1.8–5.1 ns - supports fast dynamic reconfiguration of signal paths in real-time systems |
Pinout & Package
CBTS3257PW,112 is housed in a 16-pin plastic thin shrink small outline package (TSSOP), SOT403-1, with 4.4 mm body width and 0.65 mm lead pitch. This RoHS-compliant surface-mount package supports automated assembly and provides thermal and mechanical reliability for dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Select-control input | Common control for all four multiplexer channels; selects B1 (low) or B2 (high) path per channel |
| 2,3,5,6,10,11,13,14 (1B1–4B2) | B-side outputs/inputs | Bidirectional I/O ports with Schottky undershoot clamping; two per channel |
| 4,7,9,12 (1A–4A) | A-side inputs/outputs | Bidirectional I/O ports; connected to selected B port when OE = L and switch enabled |
| 8 (GND) | Ground reference | Primary return path for supply and signal currents; must be low-impedance for noise control |
| 15 (OE) | Output enable | Active-low global enable; disconnects all A–B paths when high |
| 16 (VCC) | Positive supply | 5 V nominal power rail; powers internal logic and switch bias circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky diodes | Provides I/O undershoot protection down to –0.8 V without external components |
| TTL-compatible inputs | VIL ≤ 0.8 V / VIH ≥ 2.0 V - eliminates level-shifting in mixed-logic systems |
| Latch-up immunity | Exceeds 500 mA per JESD78 - ensures robust operation in noisy industrial environments |
| Low quiescent current | 3 µA max at VCC = 5.5 V - supports low-power standby modes in portable instrumentation |
| High ESD tolerance | 2000 V HBM, 200 V MM, 1000 V CDM - reduces handling sensitivity during manufacturing |
Applications
| Automated Test Equipment (ATE) | Digital Logic Level Translation |
|---|---|
Use Scenario: Routing multiple DUT signals to shared measurement resources in boundary-scan test fixtures. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling flexible signal path selection with sub-nanosecond propagation delay. Use Value: Eliminates need for discrete FET switches and external clamping diodes, reducing board area and component count while maintaining signal integrity. | Use Scenario: Interfacing 3.3 V FPGA I/O banks with legacy 5 V peripheral buses in industrial controllers. IC Role / Device Role / Timing Role: Level-tolerant multiplexer allowing safe bidirectional data transfer between mismatched voltage domains. Use Value: Schottky clamps prevent undershoot-induced latch-up on 3.3 V receivers, and 5 Ω ron avoids signal degradation at 100 MHz clock rates. |
| Programmable Logic Interface | Embedded Signal Routing |
Use Scenario: Dynamic reconfiguration of JTAG/SWD debug paths among multiple microcontrollers on a single PCB. IC Role / Device Role / Timing Role: 3-state-enabled multiplexer supporting hot-swappable debug access without bus contention. Use Value: OE-controlled isolation and fast enable/disable timing (<5.5 ns) allow seamless debug session handover in multi-core systems. | Use Scenario: Selecting between redundant sensor inputs in automotive body control modules. IC Role / Device Role / Timing Role: Fault-tolerant analog switch with latch-up immunity and wide temperature operation. Use Value: Guaranteed operation from –40 °C to +85 °C and >500 mA latch-up rating ensure reliability in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiplexer/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3257PWR | Same 16-pin TSSOP package, identical pinout, 5.5 V max VCC, but ron = 6 Ω typical and tpd = 0.25 ns (same spec) | Designed for TI's 3.3 V/5 V mixed-signal systems; slightly higher on-resistance affects high-current analog routing | Preferred where TI ecosystem integration or longer production availability is required |
| 74LVC1G3157GW,125 | Single-channel variant in 6-pin SC-88; 1.65–5.5 V supply; ron = 10 Ω typical; no integrated Schottky clamps | Targeted at space-constrained low-pin-count designs; lacks undershoot protection and quad integration | Used when only one channel is needed and board area is critical; requires external clamping for robustness |
Compared with SN74CBT3257PWR and 74LVC1G3157GW,125, the CBTS3257PW,112 offers superior I/O ruggedness via integrated Schottky diodes and quad-channel density in a single TSSOP package-making it optimal for industrial signal routing where reliability and layout efficiency are prioritized over ultra-low voltage operation.
Availability
CBTS3257PW,112 is available at Aetrix Electronics and suitable for automated test equipment, digital logic level translation, programmable logic interface, and embedded signal routing requiring stable component supply across extended temperature ranges and long-lifecycle programs.
Supply support for CBTS3257PW,112 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' semiconductor division.
The CBTS3257PW,112 belongs to NXP's legacy logic portfolio designed for high-speed, robust signal routing in industrial control, test instrumentation, and mixed-voltage system interfacing.
FAQ
What is the maximum supply voltage rating for CBTS3257PW,112?
The absolute maximum DC supply voltage (VCC) for CBTS3257PW,112 is +7.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operating outside this range may compromise switching performance, increase leakage current, or reduce long-term reliability. The CBTS3257PW,112 is not rated for 3.3 V-only operation and requires a stable 5 V rail for guaranteed functionality per its datasheet specifications.
Does CBTS3257PW,112 support bidirectional signal flow?
Yes, CBTS3257PW,112 supports fully bidirectional analog and digital signal routing between each A-input and its corresponding B1/B2 ports. The switch architecture has no intrinsic directionality - signals pass equally well from A to B or B to A when the channel is enabled. This capability is explicitly confirmed in the logic diagram, function table, and AC characterization of the CBTS3257PW,112, making it suitable for bus-sharing and loopback test configurations.
How does the Schottky diode protection work in CBTS3257PW,112?
The CBTS3257PW,112 integrates Schottky diodes from each I/O pin to GND, clamping negative transients to approximately –0.8 V (at –18 mA). This prevents undershoot-induced latch-up or damage during hot-plug events or fast edge transitions. Unlike external diode solutions, this protection is inherent to the silicon design and requires no additional components - a key differentiator confirmed in the "Features" and "Description" sections of the CBTS3257PW,112 datasheet.
Is CBTS3257PW,112 pin-compatible with other members of the CBTS3257 family?
Yes, CBTS3257PW,112 shares identical pinout and functionality with CBTS3257D (SO), CBTS3257DB (SSOP), and CBTS3257DS (QSOP) variants. All use the same 16-pin configuration, logic behavior, and electrical specifications. The only differences are package dimensions and thermal characteristics - the CBTS3257PW,112 uses the TSSOP variant (SOT403-1) with 4.4 mm body width and 0.65 mm pitch, optimized for fine-pitch assembly.
What is the typical on-resistance variation across channels in CBTS3257PW,112?
The CBTS3257PW,112 exhibits tightly matched on-resistance across all four channels, with typical ron = 5 Ω and max 7 Ω at VCC = 4.5 V and II = 30 mA. Channel-to-channel ron mismatch is not explicitly specified, but the uniformity of the process and symmetric layout ensures <5% variation - critical for precision analog multiplexing in instrumentation-grade CBTS3257PW,112 applications.
CBTS3257PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74CBTS
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer/Demultiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
CBTS3257PW,112 FAQ
1.How can I place an order for CBTS3257PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBTS3257PW,112 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CBTS3257PW,112 reliable?
The price and inventory of CBTS3257PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBTS3257PW,112 is usually 5 days.
3.What payment methods are accepted for CBTS3257PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBTS3257PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBTS3257PW,112?
CBTS3257PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBTS3257PW,112 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CBTS3257PW,112?
For technical support, including CBTS3257PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBTS3257PW,112 requirements.
6.How does Aetrix verify that CBTS3257PW,112 is sourced from the original manufacturer or authorized distributors?
All CBTS3257PW,112 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CBTS3257PW,112 meets industry standards.
7.What is the process for return or replacement of CBTS3257PW,112?
All CBTS3257PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with CBTS3257PW,112, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CBTS3257PW,112 part is unused and in its original packaging.
Return procedure for CBTS3257PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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