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Nexperia USA Inc. CBT3245AD-Q100J
- Part No.:
- CBT3245AD-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CBT3245AD-Q100J.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
CBT3245AD-Q100 from Nexperia is an AEC-Q100 Grade 3 qualified octal bus switch with 8 bidirectional analog/digital signal paths, 5 Ω typical ON resistance at 4.5 V, IOFF partial power-down support, and DHVQFN20 package. It functions as a low-latency, TTL-compatible signal routing device in automotive infotainment data buses and body control module interconnects.
For engineers reviewing the CBT3245AD-Q100 datasheet, CBT3245AD-Q100 pinout, CBT3245AD-Q100 application, or CBT3245AD-Q100 equivalent, key selection criteria include its -40 °C to +85 °C automotive operating range, 0.25 ns propagation delay, overvoltage-tolerant OE input (to 5.5 V), and side-wettable flanks for AOI-ready solder joint inspection.
Technical Context
The CBT3245AD-Q100 implements eight independent single-pole single-throw (SPST) analog switches controlled by a single active-low OE input. Each switch exhibits bidirectional conduction with no inherent directionality, enabling use in both data and address bus isolation.
Its IOFF circuitry ensures leakage current remains below ±5 μA when VCC = 0 V and any I/O is biased, preventing back-driving of powered-down subsystems. The device operates with TTL-level logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and supports 4.0 V to 5.5 V supply voltage without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance | 5 Ω typical at VCC = 4.5 V, II = 64 mA - ensures minimal voltage drop and signal attenuation in high-speed digital or analog signal paths. |
| Propagation Delay | 0.25 ns max - enables transparent signal routing in sub-nanosecond timing-critical applications like DDR memory bus isolation. |
| IOFF Leakage | ±5 μA max at VCC = 5.5 V - guarantees robust partial power-down behavior during system sleep modes without disrupting adjacent powered rails. |
| Supply Voltage Range | 4.0 V to 5.5 V - compatible with standard 5 V automotive microcontroller I/O domains and legacy logic families. |
| Operating Temperature | -40 °C to +85 °C - meets AEC-Q100 Grade 3 requirements for under-hood and cabin electronics environments. |
| ESD Protection | HBM > 2000 V - provides robust handling tolerance during PCB assembly and field service without external protection diodes. |
| Enable Time | 1.0 ns to 5.9 ns - ensures fast channel activation for dynamic bus arbitration and hot-swap scenarios. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 mm × 4.5 mm × 0.85 mm body, side-wettable flanks for automated optical inspection, thermal-enhanced construction, no leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Data I/O port A | Bidirectional analog/digital signal terminals; electrically identical to B-port pins with no internal direction bias. |
| B1–B8 | Data I/O port B | Corresponding bidirectional switch endpoints; each pair (An/Bn) forms one independent SPST path. |
| OE | Active-low output enable | Drives all eight switches ON when LOW; places all channels in high-impedance OFF state when HIGH. |
| VCC | Positive supply | Power rail for internal logic and switch biasing; must be present for functional operation and IOFF compliance. |
| GND | Ground reference | 0 V reference for all voltage measurements and current return path; thermal pad (pin 10) may be left floating or tied to GND. |
| n.c. | No connection | Terminal 1 is unconnected; no electrical or mechanical requirement to solder it. |
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 vibration stress tests. |
| Side-wettable flanks (SWF) | Enables 100% automated optical inspection (AOI) of solder joints on bottom-terminated QFN packages without X-ray. |
| IOFF partial power-down | Prevents current backflow between powered and unpowered system domains, critical for domain-based vehicle E/E architecture. |
| Overvoltage-tolerant OE input | Accepts control signals up to 5.5 V regardless of VCC level - simplifies interface with mixed-voltage microcontrollers. |
| Low capacitance switching | 6.6 pF off-state I/O capacitance minimizes signal integrity degradation and crosstalk in high-frequency bus applications. |
Applications
| Infotainment Display Interface | Body Control Module Bus Isolation |
|---|---|
|
Use Scenario: Routing LVDS or parallel RGB video signals between SoC and display panel while supporting panel hot-plug detection. IC Role / Device Role / Timing Role: Bidirectional analog bus switch enabling dynamic signal path reconfiguration without signal inversion or delay accumulation. Use Value: 5 Ω ON resistance preserves signal edge integrity; 0.25 ns propagation delay avoids skew-induced color artifacts in 60+ fps displays. |
Use Scenario: Isolating CAN transceiver I/O lines from MCU GPIOs during firmware update or deep-sleep mode. IC Role / Device Role / Timing Role: Signal gate controlled by MCU GPIO to decouple powered-down peripherals from active bus segments. Use Value: IOFF functionality blocks leakage currents below ±5 μA when VCC is off, preventing unintended wake-up or bus contention. |
| ADAS Camera Data Multiplexing | Automotive Gateway Subsystem Switching |
|
Use Scenario: Sharing a single MIPI CSI-2 receiver lane among multiple camera sensors via time-division multiplexing. IC Role / Device Role / Timing Role: Low-capacitance analog switch providing <6.6 pF off-state isolation to minimize crosstalk between inactive sensor lanes. Use Value: 3.2 pF input capacitance reduces loading on high-speed MIPI clock/data pairs, maintaining eye diagram margin above 1.5 Gbps. |
Use Scenario: Enabling/disabling diagnostic communication paths between gateway MCU and sub-network ECUs during secure boot or OTA updates. IC Role / Device Role / Timing Role: Logic-controlled bus gate ensuring physical layer separation between trusted and untrusted network domains. Use Value: Overvoltage-tolerant OE input allows direct control from 3.3 V diagnostic controller even when VCC = 5 V, eliminating level-shifters. |
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 (commercial only); TSSOP-20 package; no AEC-Q100 qualification; 6 Ω typical RON. | Lacks IOFF and extended temperature support - unsuitable for under-hood or safety-critical modules. | Select only for cost-sensitive non-automotive industrial or consumer designs requiring same pinout and function. |
| 74LVC245AQ20 | Octal bus transceiver (direction-controlled), not a bidirectional switch; requires DIR pin; higher propagation delay (3.2 ns). | Cannot replace CBT3245AD-Q100 in analog or bidirectional signal routing; limited to unidirectional digital data transfer. | Choose only when explicit direction control and level translation (1.65 V to 5.5 V) are required, not for passive switching. |
Compared with SN74CBT3245APWRE4 and 74LVC245AQ20, the CBT3245AD-Q100 uniquely delivers AEC-Q100-compliant bidirectional analog switching with sub-nanosecond latency, IOFF, and AOI-ready packaging - making it irreplaceable in automotive signal routing where reliability, timing, and manufacturability intersect.
Availability
CBT3245AD-Q100 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera interfaces, and body control module designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for CBT3245AD-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 global semiconductor expert in discrete, logic, and MOSFET devices, headquartered in Nijmegen, Netherlands, with manufacturing in Europe and Asia.
The CBT3245AD-Q100 belongs to Nexperia's automotive-qualified bus switch product line, engineered specifically for high-reliability signal routing in modern vehicle electronic architectures requiring low-latency, bidirectional, and power-aware interconnect solutions.
FAQ
Is CBT3245AD-Q100 pin-compatible with CBT3245A-Q100?
Yes - CBT3245AD-Q100 shares identical pinout, electrical specifications, and DHVQFN20 (SOT764-1) package with CBT3245A-Q100. The "D" suffix denotes a specific wafer fab or process revision per Nexperia's internal part numbering, not a functional or mechanical change.
Can CBT3245AD-Q100 operate with VCC = 3.3 V?
No - the recommended operating VCC range is strictly 4.0 V to 5.5 V per Table 5. At 3.3 V, ON resistance exceeds 15 Ω, enable/disable times degrade beyond specification, and IOFF behavior is not guaranteed, violating AEC-Q100 validation conditions.
What is the role of the exposed thermal pad (pin 10)?
Pin 10 is the GND pad. Per Figure 2 and Section 5.2, it has no electrical requirement to be soldered; if connected, it must remain floating or tied to system ground. Its primary purpose is thermal dissipation, not electrical grounding, and improper connection does not affect functional operation.
Does CBT3245AD-Q100 support hot insertion?
Yes - IOFF circuitry ensures that when VCC = 0 V, all I/O pins (A1–A8, B1–B8) exhibit ≤ ±5 μA leakage even if biased to valid logic levels, preventing damage or bus corruption during live board insertion into powered backplanes or modules.
CBT3245AD-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBT
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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-SO
CBT3245AD-Q100J FAQ
1.How can I place an order for CBT3245AD-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for CBT3245AD-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 CBT3245AD-Q100J reliable?
The price and inventory of CBT3245AD-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBT3245AD-Q100J is usually 5 days.
3.What payment methods are accepted for CBT3245AD-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBT3245AD-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBT3245AD-Q100J?
CBT3245AD-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBT3245AD-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 CBT3245AD-Q100J?
For technical support, including CBT3245AD-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBT3245AD-Q100J requirements.
6.How does Aetrix verify that CBT3245AD-Q100J is sourced from the original manufacturer or authorized distributors?
All CBT3245AD-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 CBT3245AD-Q100J meets industry standards.
7.What is the process for return or replacement of CBT3245AD-Q100J?
All CBT3245AD-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with CBT3245AD-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 CBT3245AD-Q100J part is unused and in its original packaging.
Return procedure for CBT3245AD-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CBT3245AD-Q100J Tags
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SN74HC138DR
Texas Instruments
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TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
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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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