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Nexperia USA Inc. CBT3253ADB,112
- Part No.:
- CBT3253ADB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CBT3253ADB,112.pdf
- Description:
- IC MUX/DEMUX 2 X 4:1 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,679
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Product details
Overview
CBT3253ADB,112 from Nexperia is a dual 1-of-4 FET bus switch IC with two independent single-pole, four-throw (SP4T) analog switches, 5 Ω typical ON resistance at 5 V, TTL-compatible control inputs, and overvoltage-tolerant enable/select pins up to 5.5 V. It operates from -40 °C to +85 °C and is used in high-speed data routing for industrial I/O expansion and FPGA interconnect.
For engineers reviewing the CBT3253ADB,112 datasheet, CBT3253ADB,112 pinout, CBT3253ADB,112 application, or CBT3253ADB,112 equivalent, this device supports low-latency signal path selection in mixed-voltage systems, requires no level-shifting for 3.3 V/5 V control logic, and delivers sub-7 ns propagation delay with minimal capacitive loading.
Technical Context
The CBT3253ADB,112 implements two independent bidirectional analog switches, each controlled by dedicated active-low output enable (1OE, 2OE) and 2-bit binary select (S0, S1) inputs. Switching is governed by CMOS transmission gate architecture with no internal latching or clocking.
Each switch channel exhibits symmetrical ON resistance (5–7 Ω at 5 V), low off-state capacitance (3.8 pF), and on-state capacitance (18.6 pF), enabling clean signal integrity for DC to ~100 MHz digital signals. Enable and disable times are specified at 1.0–7.2 ns under 50 pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance | 5–7 Ω at VCC = 4.5–5.5 V; ensures minimal voltage drop and power loss in signal paths carrying ≤128 mA. |
| Propagation Delay | ≤6.2 ns (A↔B); enables reliable routing of fast digital signals such as address/data buses without timing skew. |
| Supply Voltage Range | 4.5–5.5 V; compatible with standard 5 V TTL and mixed 3.3 V/5 V system interfaces. |
| Input Voltage Tolerance | Control inputs tolerate up to 5.5 V regardless of VCC; eliminates need for external level shifters when interfacing with higher-voltage logic. |
| Operating Temperature | -40 °C to +85 °C; validated for use in industrial control cabinets and embedded computing environments. |
| ESD Protection | HBM >2000 V, CDM >1000 V; provides robust handling during PCB assembly and field service without additional protection circuitry. |
Pinout & Package
CBT3253ADB,112 is supplied in SSOP16 (SOT519-1) package: plastic shrink small outline, 16 leads, 0.635 mm pitch, 3.9 mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low enable inputs - drive LOW to activate corresponding SP4T switch; HIGH disconnects all B ports from A port. |
| 2, 14 | S1, S0 | 2-bit binary select lines - determine which of four B terminals (1B1–1B4 or 2B1–2B4) connects to 1A or 2A respectively. |
| 3–6 | 1B4, 1B3, 1B2, 1B1 | Channel 1 bidirectional switch outputs/inputs - connect to peripheral data lines, sensors, or memory banks. |
| 7 | 1A | Channel 1 common bidirectional terminal - serves as central data hub for multiplexed I/O routing. |
| 8 | GND | Ground reference - must be low-impedance connection to minimize noise coupling into analog switch paths. |
| 9 | 2A | Channel 2 common bidirectional terminal - independent of Channel 1, enabling parallel signal routing. |
| 10–13 | 2B1, 2B2, 2B3, 2B4 | Channel 2 bidirectional switch outputs/inputs - electrically isolated from Channel 1 for dual-bus applications. |
| 16 | VCC | Positive supply - powers internal switch transistors and level translators; bypass capacitor required per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SP4T switching | Enables simultaneous routing of two separate data streams (e.g., dual ADC channels or redundant sensor buses) without crosstalk. |
| 5 Ω typical ON resistance | Minimizes insertion loss and maintains signal fidelity for 5 V logic-level signals up to 100 MHz bandwidth. |
| TTL-compatible control interface | Accepts standard 0.8 V / 2.0 V logic thresholds directly - no external pull-ups or buffers needed for microcontroller GPIOs. |
| Overvoltage-tolerant control inputs | Withstands 5.5 V on S0/S1/1OE/2OE even when VCC = 4.5 V - simplifies integration in mixed-supply systems. |
| Latch-up immunity >100 mA | Meets JEDEC JESD78 Class II Level A - prevents destructive latch-up during transient overvoltage events. |
Applications
| Industrial PLC I/O Expansion | FPGA Peripheral Multiplexing |
|---|---|
|
Use Scenario: Routing multiple sensor inputs (temperature, pressure, flow) to a single ADC channel in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Dual SP4T analog switch providing selectable signal path between 8 sensor outputs and 2 ADC inputs. Use Value: Reduces component count vs. discrete switch solutions while maintaining <6.2 ns propagation delay for synchronized sampling. |
Use Scenario: Sharing limited FPGA I/O pins among multiple peripheral devices (SPI flash, EEPROM, UART transceivers) via time-multiplexed access. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling dynamic reconfiguration of FPGA pin assignments without firmware reload. Use Value: Eliminates need for complex glue logic or additional FPGA resources; supports hot-swap peripheral detection via OE control. |
| Legacy Bus Interface Translation | Test Equipment Signal Routing |
|
Use Scenario: Interfacing 3.3 V microcontroller GPIOs with legacy 5 V parallel bus peripherals (e.g., LCD controllers, printer ports). IC Role / Device Role / Timing Role: Level-tolerant analog switch acting as voltage-agnostic signal bridge between mismatched logic families. Use Value: Avoids dedicated level translators; preserves signal rise/fall times due to <0.25 ns intrinsic propagation delay through ON state. |
Use Scenario: Automated test fixture routing of stimulus signals (clock, data, reset) to DUT pins under software control. IC Role / Device Role / Timing Role: Precision analog switch providing repeatable, low-crosstalk path selection for calibration-grade signal integrity. Use Value: Enables <3.8 pF off-capacitance and 18.6 pF on-capacitance matching - critical for minimizing measurement uncertainty in high-frequency test setups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 1-of-4 analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3253CPWR | Higher ON resistance (7–10 Ω), wider supply range (4.5–5.5 V), same pinout; lower ESD rating (HBM 1500 V). | Less suitable for high-current analog routing but offers identical control logic compatibility. | Select when cost sensitivity outweighs marginal ON resistance increase and ESD margin is acceptable. |
| 74LVC1G3157GW,125 | Single-channel only, smaller SC-70 package, 3.3 V only supply (1.65–5.5 V), 6 Ω typical RON. | Requires two units to match dual functionality; not pin-compatible; better for space-constrained low-power designs. | Choose for compact, low-power applications where dual-channel integration is not mandatory. |
Compared with SN74CBT3253CPWR and 74LVC1G3157GW,125, the CBT3253ADB,112 delivers superior ON resistance consistency, higher ESD robustness, and native dual-channel integration - making it optimal for industrial I/O consolidation where reliability and signal integrity are prioritized over footprint minimization.
Availability
CBT3253ADB,112 is available at Aetrix Electronics and suitable for industrial automation, test equipment design, and FPGA-based embedded systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CBT3253ADB,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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET components for automotive, industrial, and consumer markets.
The CBT3253ADB,112 belongs to Nexperia's CBT (CMOS Bi-directional Transistor) bus switch family, engineered specifically for low-latency, low-distortion signal routing in mixed-voltage digital systems.
FAQ
What is the maximum continuous current per switch channel?
The CBT3253ADB,112 supports up to 128 mA continuous current per switch channel, as defined in its Absolute Maximum Ratings table. This value is validated under thermal conditions ensuring junction temperature remains within safe limits at ambient temperatures up to +85 °C with proper PCB copper area.
Can the control inputs operate at 3.3 V while VCC is 5 V?
Yes - the control inputs (S0, S1, 1OE, 2OE) are overvoltage tolerant up to 5.5 V and fully compatible with 3.3 V logic levels when VCC = 5 V. The input thresholds remain fixed at VIH ≥ 2.0 V and VIL ≤ 0.8 V, ensuring reliable operation without level-shifting circuitry.
Is the CBT3253ADB,112 pin-compatible with other CBT3253x variants?
Yes - CBT3253ADB,112 shares identical pinout and function with CBT3253AD (SO16) and CBT3253APW (TSSOP16). All variants use the same SOT519-1 (SSOP16) footprint and electrical behavior, differing only in package dimensions and thermal characteristics.
Does the device require external pull-up or pull-down resistors on control pins?
No - unused control inputs must be held at VCC or GND per the Recommended Operating Conditions table, but no external resistors are required if driven actively by a microcontroller or FPGA. Internal protection diodes and CMOS input structure eliminate floating-input risk when properly terminated.
CBT3253ADB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBT
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer/Demultiplexer
- Circuit:
- 2 x 4:1
- 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-SSOP
CBT3253ADB,112 FAQ
1.How can I place an order for CBT3253ADB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBT3253ADB,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 CBT3253ADB,112 reliable?
The price and inventory of CBT3253ADB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBT3253ADB,112 is usually 5 days.
3.What payment methods are accepted for CBT3253ADB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBT3253ADB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBT3253ADB,112?
CBT3253ADB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBT3253ADB,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 CBT3253ADB,112?
For technical support, including CBT3253ADB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBT3253ADB,112 requirements.
6.How does Aetrix verify that CBT3253ADB,112 is sourced from the original manufacturer or authorized distributors?
All CBT3253ADB,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 CBT3253ADB,112 meets industry standards.
7.What is the process for return or replacement of CBT3253ADB,112?
All CBT3253ADB,112 units undergo pre-shipment inspection (PSI). If there is an issue with CBT3253ADB,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 CBT3253ADB,112 part is unused and in its original packaging.
Return procedure for CBT3253ADB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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