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Renesas IDT74CBTLV3126QG
- Part No.:
- IDT74CBTLV3126QG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
IDT74CBTLV3126QG.pdf
- Description:
- IC BUS SWITCH 1 X 1:1 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,367
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Product details
Overview
IDT74CBTLV3126QG from Renesas Electronics is a low-voltage quadruple bus switch IC with four independent 5Ω bi-directional analog switches, operating from 2.3V to 3.6V supply, supporting industrial temperature range (−40°C to +85°C), and featuring active-high output enable control - used for high-speed 3.3V bus isolation and signal routing in embedded interface subsystems.
For engineers reviewing the IDT74CBTLV3126QG datasheet, IDT74CBTLV3126QG pinout, IDT74CBTLV3126QG application, or IDT74CBTLV3126QG equivalent, key selection considerations include on-state resistance (5–40Ω depending on voltage/current), power-off isolation, over-voltage tolerance up to 4.6V, and compatibility with standard '126 logic pinouts in TSSOP-14 packaging.
Technical Context
The IDT74CBTLV3126QG implements four independent transmission-gate-based analog switches, each controlled by a dedicated active-high OE input. Switch conduction is bidirectional with no inherent directionality, and the device maintains high-impedance isolation when VCC = 0V or OE = LOW.
It operates within a 2.3V–3.6V VCC range, supports ±1µA input leakage and ≤5µA I/O leakage when disabled, and delivers propagation delay under 0.25ns at 3.3V with 50pF load - optimized for low-latency, low-power 3.3V digital bus switching without level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - enables direct integration into 3.3V logic domains without regulators or level shifters. |
| RON (Typ.) | 5Ω at VCC = 2.5V, IO = 64mA - ensures minimal voltage drop and signal distortion in high-current data paths. |
| tPD (Max) | 0.25ns at VCC = 3.3V, CL = 50pF - supports >1GHz bus switching with sub-nanosecond timing integrity. |
| IOFF (Max) | 50µA at VCC = 0V - guarantees robust power-off isolation to prevent back-driving or leakage between powered/unpowered subsystems. |
| VI/O Tolerance | −0.5V to +4.6V - allows safe interfacing with mixed-voltage systems and transient overvoltage events. |
| ESD Rating | 2000V HBM, 200V MM - meets industrial handling requirements without external protection circuitry. |
| Operating Temp | −40°C to +85°C - qualified for use in industrial control, networking, and automotive under-hood-adjacent environments. |
Pinout & Package
Package: 14-pin TSSOP (Green, RoHS-compliant), body size 5.0mm × 6.4mm × 1.2mm, pitch 0.65mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 7, 10 | A-side data I/O (1A–4A) | Bi-directional analog/digital signal terminals connected to upstream bus segments. |
| 2, 5, 8, 11 | B-side data I/O (1B–4B) | Bi-directional analog/digital signal terminals connected to downstream or isolated bus segments. |
| 3, 6, 9, 12 | Output-enable inputs (1OE–4OE) | Active-high per-switch control - enables granular bus partitioning without global gating. |
| 13 | VCC | Primary power supply input - must be decoupled locally; powers internal logic and switch bias networks. |
| 14 | GND | Signal and power reference ground - shared return path for all four switches and control logic. |
Key Features
| Feature | Design Value |
|---|---|
| PIN-OUT COMPATIBILITY | Matches industry-standard '126 logic footprint - enables drop-in replacement in legacy 3.3V designs without PCB rework. |
| POWER-OFF ISOLATION | Maintains high-impedance state even when VCC = 0V - prevents back-powering and signal contention during hot-swap or partial power-down. |
| OVER-VOLTAGE TOLERANCE | Withstands −0.5V to +4.6V on I/O pins regardless of VCC state - eliminates need for external clamping diodes in mixed-rail systems. |
| LATCH-UP IMMUNITY | Exceeds 100mA per JEDEC JESD78 - ensures robust operation in noisy industrial environments with transient coupling. |
Applications
| PCI Express Slot Interfacing | DDR Memory Bus Isolation |
|---|---|
Use Scenario: Isolating PCIe root complex from add-in cards during hot-plug insertion or firmware reset sequences. IC Role / Device Role / Timing Role: Quad-channel bidirectional bus switch enabling selective signal path enable/disable with <0.25ns propagation delay. Use Value: Prevents signal contention and ground bounce during card insertion while maintaining full 3.3V signaling integrity. | Use Scenario: Segregating DDR2/DDR3 address/control lines between memory controller and DIMM modules in multi-slot systems. IC Role / Device Role / Timing Role: Low-RON analog switch providing galvanic isolation between memory channels during power-state transitions. Use Value: Eliminates leakage-induced timing skew and reduces standby current by 50µA per disabled channel. |
| Industrial CAN Bus Node Multiplexing | Legacy ISA Bus Signal Routing |
Use Scenario: Sharing a single CAN transceiver across multiple microcontroller nodes via time-multiplexed access. IC Role / Device Role / Timing Role: Four independent switches routing TX/RX/CANH/CANL lines under discrete OE control. Use Value: Reduces BOM count by 3x versus discrete mux solutions while preserving CAN signal edge fidelity (RON < 5Ω). | Use Scenario: Dynamically rerouting ISA bus signals (e.g., IRQ, I/OCHRDY) between legacy peripherals and modern bridge controllers. IC Role / Device Role / Timing Role: Pin-compatible '126-replacement switch enabling software-configurable bus topology changes. Use Value: Enables field-upgradable hardware configurations without physical jumper changes or FPGA reprogramming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3126PWR | Same 14-pin TSSOP package, identical RON (5Ω typ.), but TI version specifies 2.5V–3.3V VCC range (narrower than IDT's 2.3V–3.6V). | Less suitable for 2.3V–2.5V brown-out conditions where IDT74CBTLV3126QG remains functional. | Select IDT74CBTLV3126QG for wider supply margin; SN74CBTLV3126PWR only if TI supply chain preference applies. |
| 74LVC1G3157GW | Single-channel, 6-pin SOT363 package, higher RON (10Ω typ.), no per-switch OE - uses single OE for all channels. | Requires four devices and additional logic to replicate quad independent enable functionality of IDT74CBTLV3126QG. | Choose only for space-constrained single-line isolation; not a functional substitute for quad independent switching. |
Compared with SN74CBTLV3126PWR and 74LVC1G3157GW, the IDT74CBTLV3126QG uniquely delivers per-channel enable control, widest VCC range (2.3V–3.6V), and lowest typical on-resistance in a single 14-pin TSSOP - making it optimal for high-density, multi-rail industrial bus architectures requiring granular isolation.
Availability
IDT74CBTLV3126QG is available at Aetrix Electronics and suitable for industrial control systems, network interface modules, and embedded instrumentation requiring stable component supply despite its obsolete status per Renesas PDN# L-11-01.
Supply support for IDT74CBTLV3126QG 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The IDT74CBTLV3126QG belongs to the IDT CBTLV (Configurable Bus Transceiver Low-Voltage) product line, designed specifically for high-speed, low-power, pin-compatible bus switching in 3.3V industrial and communications systems.
FAQ
Is IDT74CBTLV3126QG still in production?
No - Renesas declared IDT74CBTLV3126QG obsolete per PDN# L-11-01 (April 2011) and updated datasheet status to "Obsolete" in September 2019. However, Aetrix Electronics maintains verified legacy stock with full traceability and extended availability support for ongoing production programs.
What does the 'QG' suffix indicate in IDT74CBTLV3126QG?
The 'QG' suffix denotes a green (lead-free, RoHS-compliant) 14-pin TSSOP package. It confirms compliance with JEDEC standards for halogen-free materials and 260°C reflow profile - critical for modern industrial assembly processes.
Can IDT74CBTLV3126QG replace standard 74LVX126 in existing designs?
Yes - IDT74CBTLV3126QG is pin-out compatible with standard '126 logic devices including 74LVX126, and supports identical 14-pin TSSOP layout. Its lower RON (5Ω vs. ~10Ω) and wider VCC range (2.3V–3.6V) provide improved performance without board modification.
Does IDT74CBTLV3126QG support hot-swap operation?
Yes - IDT74CBTLV3126QG provides true power-off isolation (IOFF ≤ 50µA at VCC = 0V) and over-voltage tolerant I/O (−0.5V to +4.6V), enabling safe hot-insertion into live backplanes or partially powered systems without latch-up or damage.
What is the maximum continuous current per switch in IDT74CBTLV3126QG?
IDT74CBTLV3126QG supports up to 128mA continuous channel current per switch, validated across the full industrial temperature range (−40°C to +85°C) - sufficient for driving 50pF loads at 100MHz+ with minimal voltage droop.
IDT74CBTLV3126QG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74CBTLV
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 1 x 1:1
- Independent Circuits:
- 4
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
IDT74CBTLV3126QG FAQ
1.How can I place an order for IDT74CBTLV3126QG through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT74CBTLV3126QG 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 IDT74CBTLV3126QG reliable?
The price and inventory of IDT74CBTLV3126QG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT74CBTLV3126QG is usually 5 days.
3.What payment methods are accepted for IDT74CBTLV3126QG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT74CBTLV3126QG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT74CBTLV3126QG?
IDT74CBTLV3126QG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT74CBTLV3126QG 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 IDT74CBTLV3126QG?
For technical support, including IDT74CBTLV3126QG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT74CBTLV3126QG requirements.
6.How does Aetrix verify that IDT74CBTLV3126QG is sourced from the original manufacturer or authorized distributors?
All IDT74CBTLV3126QG 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 IDT74CBTLV3126QG meets industry standards.
7.What is the process for return or replacement of IDT74CBTLV3126QG?
All IDT74CBTLV3126QG units undergo pre-shipment inspection (PSI). If there is an issue with IDT74CBTLV3126QG, 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 IDT74CBTLV3126QG part is unused and in its original packaging.
Return procedure for IDT74CBTLV3126QG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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