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Nexperia USA Inc. CBT3245APW-Q100J
- Part No.:
- CBT3245APW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CBT3245APW-Q100J.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,738
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Product details
Overview
CBT3245APW-Q100 from Nexperia is an AEC-Q100 Grade 3 qualified octal bus switch in TSSOP20 package, featuring eight independent bidirectional analog/digital switches controlled by a single active-low OE input, 5 Ω typical ON resistance at 4.5 V, IOFF partial power-down support, and TTL-level compatibility - used for signal routing in automotive infotainment data buses.
For engineers reviewing the CBT3245APW-Q100 datasheet, CBT3245APW-Q100 pinout, CBT3245APW-Q100 application, or CBT3245APW-Q100 equivalent, this page delivers verified functional role, automotive-grade thermal and ESD specs, DHVQFN/TSSOP package mapping, and validated alternatives for bus isolation and level-flexible signal switching in constrained PCB layouts.
Technical Context
The CBT3245APW-Q100 implements eight independent transmission-gate-based bilateral switches with no internal logic inversion; each channel conducts bidirectionally when OE is LOW and presents high-impedance (Z) when OE is HIGH. Its IOFF circuitry ensures leakage current remains below ±5 μA during partial power-down, enabling safe hot-insertion in mixed-voltage systems.
Control inputs tolerate up to 5.5 V regardless of VCC, allowing direct interfacing with 3.3 V or 5 V controllers driving 5 V buses. Switch timing is characterized with <0.25 ns propagation delay and 1.0–5.9 ns enable/disable times under 50 pF load, supporting high-speed digital bus multiplexing without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Count | 8 independent bidirectional channels - enables parallel data path isolation across microcontroller peripherals or sensor interfaces. |
| ON Resistance | 5 Ω typical at VCC = 4.5 V, II = 64 mA - ensures minimal voltage drop and signal attenuation in 5 V digital bus applications. |
| IOFF Current | ±5 μA max at VCC = 5.5 V - guarantees safe partial power-down operation with negligible standby leakage in automotive subsystems. |
| Propagation Delay | <0.25 ns - supports clean switching of high-frequency digital signals (e.g., SPI, I²C, parallel address/data) without timing skew. |
| ESD Protection | HBM >2000 V, MM >150 V - meets automotive board-level robustness requirements for handling during assembly and field operation. |
| Operating Temp | -40 °C to +85 °C - certified for engine bay and cabin electronics where ambient thermal cycling occurs. |
| VCC Range | 4.0 V to 5.5 V - compatible with standard 5 V automotive power rails and tolerant of nominal 5 V ±10 % variation. |
Pinout & Package
DHVQFN20 (SOT764-1) package: 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, thermal-enhanced quad flat no-lead construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Data port A (input/output) | Eight bidirectional analog/digital signal terminals on one side of each switch; connect to source-side bus or controller interface. |
| B1–B8 | Data port B (input/output) | Eight corresponding bidirectional terminals on the other side; connect to destination bus, memory, or peripheral device. |
| OE | Output enable (active LOW) | Single global control: drives all eight switches ON when LOW; places all channels in high-Z OFF state when HIGH. |
| VCC | Positive supply | Power rail for switch biasing; must be within 4.0–5.5 V; powers internal level-shifting and IOFF circuitry. |
| GND | Ground reference | 0 V return path for all switch currents and control logic; required for proper IOFF and ESD performance. |
| n.c. | No connection | Terminal 1 is unconnected; no electrical function - must remain floating or isolated from PCB traces. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 3 qualification | Validated for automotive use across -40 °C to +85 °C ambient, including temperature cycling, humidity, and mechanical shock tests. |
| IOFF partial power-down | Prevents back-powering and current leakage when VCC is off but A/B ports remain biased - critical for modular ECU hot-swap designs. |
| TTL-compatible control | OE accepts 0.8 V MAX low and 2.0 V MIN high thresholds - interoperable with legacy 5 V microcontrollers without level shifters. |
| Overvoltage-tolerant OE | Withstands up to 5.5 V on OE while VCC = 4.0 V - enables flexible control sourcing from higher-voltage domains without damage. |
| Side-wettable flanks (SWF) | Enables automated optical inspection of solder joints on bottom-terminated DHVQFN - improves manufacturing yield in automotive SMT lines. |
Applications
| Automotive Infotainment Bus Isolation | ECU Sensor Multiplexing |
|---|---|
|
Use Scenario: Isolating audio/video data paths between head unit MCU and display/tuner modules during sleep mode to prevent cross-talk and power leakage. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling/disabling parallel LVDS or parallel RGB signal lanes under OE control. Use Value: Eliminates need for discrete MOSFET arrays; 5 Ω RON preserves signal edge integrity at 25 MHz pixel clocks; IOFF prevents battery drain during key-off. |
Use Scenario: Sharing a single ADC input among multiple temperature/pressure sensors in a powertrain control module via time-multiplexed sampling. IC Role / Device Role / Timing Role: Analog signal router selecting one of eight sensor outputs to feed into a common signal conditioning chain. Use Value: Maintains <1 % gain error due to low 5 Ω RON; sub-nanosecond tpd avoids sampling window distortion; AEC-Q100 ensures reliability over 15-year vehicle life. |
| Instrument Cluster Display Interface | Body Control Module Data Routing |
|
Use Scenario: Switching between primary and backup graphics controller outputs to a TFT display panel based on system health status. IC Role / Device Role / Timing Role: Fail-safe bus switch providing redundant video path selection with <6 ns enable/disable latency. Use Value: Enables seamless display failover within 10 ms; SWF package supports AOI verification for zero-defect assembly in safety-critical clusters. |
Use Scenario: Routing LIN or CAN transceiver I/O lines to diagnostic test points or alternate microcontrollers during production programming or field service. IC Role / Device Role / Timing Role: Signal isolation gate preventing bus contention during firmware updates or hardware reconfiguration. Use Value: 2000 V HBM ESD rating protects against technician-handling events; OE-controlled high-Z state eliminates risk of bus lockup during hot-plug operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3245APWRE4 | Non-automotive grade; rated -40 °C to +85 °C but not AEC-Q100 qualified; identical RON (5 Ω), same TSSOP20 package. | Lacks automotive qualification documentation and extended reliability testing - unsuitable for OEM production in safety-relevant ECUs. | Select only for non-automotive industrial or consumer prototypes where AEC compliance is not mandated. |
| 74LVC245APW,118 | Octal bus transceiver (direction-controlled, not bidirectional switch); 3-state outputs; 3.3 V only (1.65–3.6 V VCC); RON not specified. | Requires direction control pin and separate enable; incompatible with analog signal routing or hot-swap isolation use cases. | Choose only when unidirectional level translation (3.3 V ↔ 5 V) is needed and bidirectional analog switching is unnecessary. |
Compared with SN74CBT3245APWRE4, the CBT3245APW-Q100 adds formal AEC-Q100 Grade 3 validation and enhanced ESD robustness; versus 74LVC245APW, it provides true bidirectional analog switching without direction control overhead or voltage-level restrictions.
Availability
CBT3245APW-Q100 is available at Aetrix Electronics and suitable for automotive infotainment systems, powertrain control units, and instrument cluster electronics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CBT3245APW-Q100 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 leading semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components, with core expertise in automotive-qualified solutions.
The CBT3245APW-Q100 belongs to Nexperia's automotive logic switch portfolio, designed specifically for robust signal routing in harsh-environment vehicle subsystems where IOFF, ESD resilience, and AEC-Q100 compliance are mandatory.
FAQ
Is CBT3245APW-Q100 pin-compatible with CBT3245ABQ-Q100?
No. CBT3245APW-Q100 uses TSSOP20 (SOT360-1) packaging, while CBT3245ABQ-Q100 uses DHVQFN20 (SOT764-1). Pin numbering and physical layout differ: PW has gull-wing leads; BQ has bottom-terminal land pattern. Electrical functionality is identical, but PCB footprint and soldering process are not interchangeable.
Can OE be left floating in normal operation?
No. Per Section 8 of the datasheet, all unused control inputs must be held at VCC or GND. Floating OE may cause indeterminate switch states, increased ICC, or latch-up risk. Tie OE to VCC via 10 kΩ pull-up if permanently disabling switches, or drive actively from a GPIO for dynamic control.
Does CBT3245APW-Q100 support analog signal switching up to 10 MHz?
Yes. With 5 Ω RON and <6.6 pF off-state capacitance, the device maintains signal integrity for analog signals up to 10 MHz (bandwidth ≈ 1/(2π·RON·Cio) ≈ 480 MHz theoretical). Measured tpd <0.25 ns confirms suitability for fast digital and moderate-bandwidth analog routing in automotive sensors and displays.
What is the maximum allowable voltage on A/B pins when VCC = 0 V?
Per Table 4 (Limiting Values), A/B pins tolerate -0.5 V to +7.0 V regardless of VCC state. However, IOFF protection limits current flow to ±5 μA when VCC = 0 V and A/B are biased - enabling safe "live" signal presence during partial power-down, provided clamp-current ratings are not exceeded.
CBT3245APW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 8 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
CBT3245APW-Q100J FAQ
1.How can I place an order for CBT3245APW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for CBT3245APW-Q100J 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 CBT3245APW-Q100J reliable?
The price and inventory of CBT3245APW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBT3245APW-Q100J is usually 5 days.
3.What payment methods are accepted for CBT3245APW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBT3245APW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBT3245APW-Q100J?
CBT3245APW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBT3245APW-Q100J 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 CBT3245APW-Q100J?
For technical support, including CBT3245APW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBT3245APW-Q100J requirements.
6.How does Aetrix verify that CBT3245APW-Q100J is sourced from the original manufacturer or authorized distributors?
All CBT3245APW-Q100J 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 CBT3245APW-Q100J meets industry standards.
7.What is the process for return or replacement of CBT3245APW-Q100J?
All CBT3245APW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with CBT3245APW-Q100J, 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 CBT3245APW-Q100J part is unused and in its original packaging.
Return procedure for CBT3245APW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CBT3245APW-Q100J Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
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74CBTLV3257PW,118
Nexperia USA Inc.
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SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
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SN74HC138N
Texas Instruments
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