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Nexperia USA Inc. CBT3253ADS,118
- Part No.:
- CBT3253ADS,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
CBT3253ADS,118.pdf
- Description:
- IC MUX/DEMUX 2 X 4:1 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,707
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Product details
Overview
CBT3253ADS,118 from Nexperia is a dual 1-of-4 FET bus switch IC with two independent SP4T switch arrays, 5 Ω typical ON resistance at 5 V, <0.25 ns propagation delay, and operation over -40 °C to +85 °C. It serves as a low-latency signal routing device in high-speed digital interconnects, enabling dynamic channel selection between microcontroller GPIOs and multiple peripheral interfaces.
For engineers reviewing the CBT3253ADS,118 datasheet, CBT3253ADS,118 pinout, CBT3253ADS,118 application, or CBT3253ADS,118 equivalent, key selection criteria include its TTL-compatible control inputs, overvoltage-tolerant enable/select pins (to 5.5 V), sub-7 ns enable/disable timing, and SSOP16 package suitability for space-constrained PCB layouts.
Technical Context
The CBT3253ADS,118 implements two independent analog/digital bidirectional FET switches, each controlled by active-low OE and 2-bit binary select (S0/S1) logic. Each switch array routes one common port (1A or 2A) to one of four selectable I/O ports (1B1–1B4 or 2B1–2B4) when enabled.
Its architecture uses transmission-gate FETs with no internal level-shifting circuitry, requiring VCC = 4.5–5.5 V for guaranteed TTL-level compatibility and ≤5 Ω RON. Control inputs tolerate up to 5.5 V regardless of VCC, enabling mixed-voltage system interfacing without external translators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance | 5 Ω typical at VCC = 5 V, IO = ±100 μA - ensures minimal voltage drop and signal distortion in 3.3 V/5 V digital data paths. |
| Propagation Delay | <0.25 ns max (nA ↔ nBn) - supports >1 GHz signal switching without measurable timing degradation. |
| Enable/Disable Time | 1.0–7.2 ns (ten/tdis) - enables rapid reconfiguration in time-multiplexed bus architectures. |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard 5 V logic rails and provides margin against rail droop. |
| Input Voltage Tolerance | Control pins rated to 5.5 V independent of VCC - allows direct connection to 3.3 V or 5 V controllers without level shifters. |
| Operating Temperature | -40 °C to +85 °C - qualified for industrial-grade embedded systems including factory automation and test equipment. |
| ESD Protection | HBM >2000 V, CDM >1000 V - reduces risk of handling damage during assembly and field service. |
Pinout & Package
CBT3253ADS,118 is housed in a 16-lead SSOP package (SOT519-1) with 0.635 mm lead pitch and 3.9 mm body width - optimized for high-density routing and thermal performance in compact PCB designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low output enable for each switch bank - asserts LOW to activate corresponding A↔B path selection. |
| 2, 14 | S1, S0 | 2-bit binary select inputs - determine which of four B-port terminals connects to A port (00→B1, 01→B2, etc.). |
| 3–6 | 1B4, 1B3, 1B2, 1B1 | First switch bank B-side I/O terminals - bidirectional, support 128 mA continuous current per path. |
| 7 | 1A | Common I/O terminal for first switch bank - connects to selected 1Bn when 1OE = LOW and S1/S0 set. |
| 8 | GND | Ground reference for all signals and supply return - must be low-impedance for stable RON and EMI control. |
| 9 | 2A | Common I/O terminal for second switch bank - electrically isolated from 1A; shares same functional behavior. |
| 10–13 | 2B1, 2B2, 2B3, 2B4 | Second switch bank B-side I/O terminals - independent routing domain from 1Bx group. |
| 16 | VCC | Positive supply input - powers internal FET gates and defines logic threshold; decoupling capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ON resistance | 5 Ω typical at 5 V - preserves signal integrity in high-speed parallel buses and memory address lines. |
| TTL-compatible interface | VIH ≥ 2.0 V, VIL ≤ 0.8 V - directly drives and accepts standard 5 V TTL outputs without pull-ups or buffers. |
| Overvoltage-tolerant controls | Inputs withstand 5.5 V regardless of VCC - simplifies integration with mixed-supply SoCs and FPGA I/O banks. |
| Latch-up immunity | Exceeds 100 mA per JEDEC JESD78 Class II Level A - prevents destructive latch-up under transient overvoltage conditions. |
| Low dynamic power | ICC ≤ 3 μA at VCC = 5.5 V - minimizes quiescent current in always-on signal routing nodes. |
Applications
| PCIe Lane Multiplexing | Microcontroller Peripheral Sharing |
|---|---|
|
Use Scenario: Dynamically assigning PCIe Gen2 lanes between two host processors sharing one downstream device. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling lane re-routing without protocol-aware logic; operates transparently to link training. Use Value: Eliminates need for dedicated PCIe packet switches, reducing BOM cost and board area while maintaining sub-nanosecond signal path delay. |
Use Scenario: Sharing a single UART or SPI interface among four sensors on an industrial PLC module. IC Role / Device Role / Timing Role: Signal path selector that isolates inactive peripherals and prevents bus contention during polling cycles. Use Value: Enables software-controlled peripheral arbitration with zero added latency and no firmware overhead beyond GPIO writes. |
| Test Equipment Signal Routing | Legacy Bus Interface Translation |
|
Use Scenario: Automated test fixture connecting one DUT port to any of four measurement instruments via programmable control. IC Role / Device Role / Timing Role: High-fidelity analog/digital multiplexer supporting DC–200 MHz signals with flat frequency response. Use Value: Delivers consistent 5 Ω impedance across all paths, minimizing insertion loss variation (<0.1 dB) between channels. |
Use Scenario: Adapting a legacy 8-bit ISA bus design to support modern low-voltage peripherals using shared address/data lines. IC Role / Device Role / Timing Role: Voltage-agnostic bus switch allowing 3.3 V peripherals to coexist on 5 V backplane without level shifters. Use Value: Leverages overvoltage-tolerant control inputs to accept 5 V ISA address strobes while passing 3.3 V data cleanly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3253CPWR | Same pinout, 6 Ω RON typ, 5.5 V tolerant controls, but only specified from -40 °C to +85 °C with lower ESD rating (HBM 1500 V). | Valid for commercial-temperature designs where 500 mV higher RON is acceptable and lower ESD margin is mitigated by system-level protection. | Select when TI's distribution network offers better lead time or volume pricing, and thermal derating is not required. |
| 74LVC1G3157GW,125 | Single-channel 1-of-2 switch in SC-70; 6 Ω RON, 3.3 V only supply; no overvoltage tolerance on controls. | Only suitable for low-pin-count, single-path applications with strict 3.3 V supply and no mixed-voltage signaling. | Choose only if board space is critical and dual 1-of-4 functionality is unnecessary - not a functional replacement. |
Compared with SN74CBT3253CPWR, CBT3253ADS,118 delivers superior ESD robustness and tighter RON consistency; versus 74LVC1G3157GW,125, it provides double the channel count, full 5 V operation, and overvoltage-safe control - making it the sole fit for industrial dual-bank routing.
Availability
CBT3253ADS,118 is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and embedded computing applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for CBT3253ADS,118 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 essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The CBT3253ADS,118 belongs to Nexperia's advanced bus switch product line, engineered specifically for ultra-low-latency, low-distortion signal routing in high-speed digital systems where timing predictability and signal fidelity are critical.
FAQ
Can CBT3253ADS,118 operate with VCC = 3.3 V?
No. The CBT3253ADS,118 is specified only for VCC = 4.5 V to 5.5 V per Table 5. At 3.3 V, RON increases significantly (>15 Ω), propagation delay degrades, and TTL input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) are no longer guaranteed. Use 74LVC-series alternatives for 3.3 V operation.
Is the CBT3253ADS,118 pin-compatible with CBT3253AD (SO16) or CBT3253APW (TSSOP16)?
Yes - all three variants share identical pin numbering and electrical functionality per Figures 2 and 3. The only differences are mechanical: SO16 (SOT109-1), SSOP16 (SOT519-1), and TSSOP16 (SOT403-1) packages differ in body width, lead pitch, and thermal resistance, but require no PCB redesign for footprint interchange.
What is the maximum capacitive load the CBT3253ADS,118 can drive without signal degradation?
Per Table 9 test conditions, the device is characterized with 50 pF load capacitance and maintains tpd ≤ 0.25 ns and ten ≤ 7.2 ns. Driving >100 pF may increase propagation delay nonlinearly and reduce bandwidth; for loads exceeding 50 pF, verify eye diagram integrity at target data rate using actual layout parasitics.
Does CBT3253ADS,118 support hot-swap or live-insertion?
No. The device lacks powered-off protection or Ioff specification. When VCC = 0 V, leakage paths exist between ports (see Table 6 CI and Cio(off)), risking back-powering or signal contention. Always power-cycle the CBT3253ADS,118 before inserting/removing connected peripherals.
CBT3253ADS,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBT
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
CBT3253ADS,118 FAQ
1.How can I place an order for CBT3253ADS,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBT3253ADS,118 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 CBT3253ADS,118 reliable?
The price and inventory of CBT3253ADS,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBT3253ADS,118 is usually 5 days.
3.What payment methods are accepted for CBT3253ADS,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBT3253ADS,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBT3253ADS,118?
CBT3253ADS,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBT3253ADS,118 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 CBT3253ADS,118?
For technical support, including CBT3253ADS,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBT3253ADS,118 requirements.
6.How does Aetrix verify that CBT3253ADS,118 is sourced from the original manufacturer or authorized distributors?
All CBT3253ADS,118 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 CBT3253ADS,118 meets industry standards.
7.What is the process for return or replacement of CBT3253ADS,118?
All CBT3253ADS,118 units undergo pre-shipment inspection (PSI). If there is an issue with CBT3253ADS,118, 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 CBT3253ADS,118 part is unused and in its original packaging.
Return procedure for CBT3253ADS,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CBT3253ADS,118 Tags
-
SN74HC138DR
Texas Instruments
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TC7SB3157CFU,LF(CT
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74CBTLV3257PW,118
Nexperia USA Inc.
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SN74CBTLV3257PWR
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74CBTLV3257GUX
Nexperia USA Inc.
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74HC154BQ,118
Nexperia USA Inc.
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P3S0200GMX
NXP USA Inc.
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SN74CB3Q3245PWR
Texas Instruments
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SN74CB3Q3257RGYR
Texas Instruments
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TCA9543APWR
Texas Instruments
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TCA9546APWR
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SN74HC138N
Texas Instruments
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