My Inquiry
My Account
Renesas 74CBTLV3125PGG8
- Part No.:
- 74CBTLV3125PGG8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74CBTLV3125PGG8.pdf
- Description:
- IC BUS SWITCH 1 X 1:1 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,126
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74CBTLV3125PGG8 from Renesas Electronics (formerly IDT) is a low-voltage quadruple bus switch IC used for high-speed 3.3V data path control and isolation in digital systems. It features four independent bi-directional switches with 5Ω on-resistance, operates from 2.3V to 3.6V, supports industrial temperature range (–40°C to +85°C), and provides power-off isolation for system-level bus integrity in hot-swap and mixed-voltage environments.
For engineers reviewing the 74CBTLV3125PGG8 datasheet, 74CBTLV3125PGG8 pinout, 74CBTLV3125PGG8 application, or 74CBTLV3125PGG8 equivalent, key selection criteria include guaranteed 5Ω RON at 2.5V/3.3V, OE-controlled enable/disable timing (tEN ≤ 4.6 ns), over-voltage tolerance up to 4.6V, latch-up immunity >100 mA, and TSSOP-14 package compatibility with standard '125 logic footprints.
Technical Context
The 74CBTLV3125PGG8 implements four independent analog-style transmission gates controlled by individual active-low OE inputs. Each switch conducts bidirectionally with minimal propagation delay (tPD ≤ 0.25 ns at 3.3V) and exhibits near-zero charge injection, enabling clean signal pass-through without level-shifting.
Its power-off isolation (IOFF ≤ 50 µA at VCC = 0) and over-voltage tolerance (VI/O up to 4.6V) allow safe interfacing between powered and unpowered subsystems-critical in backplane, memory expansion, and FPGA I/O buffering applications where voltage domains coexist.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - Enables direct interface with 2.5V and 3.3V logic families without level shifters |
| RON (Typ.) | 5Ω at VCC = 3.3V, IO = 24mA - Ensures <100mV voltage drop across switch under typical load, preserving signal integrity |
| tEN/tDIS | 1–4.6 ns / 1–4.2 ns - Supports sub-5ns enable/disable transitions for high-frequency bus arbitration |
| IOFF | ≤50 µA at VCC = 0 - Guarantees true high-impedance isolation during power-down or hot-plug events |
| ESD Rating | >2000V HBM, >200V MM - Meets MIL-STD-883 requirements for robust handling in manufacturing and field deployment |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded control, telecom infrastructure, and automotive body electronics |
Pinout & Package
74CBTLV3125PGG8 is packaged in a 14-pin Thin Shrink Small Outline Package (TSSOP), lead-free and RoHS-compliant. Pin numbering follows JEDEC MO-153 standard for TSSOP-14.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | A-side data I/O | Bi-directional analog/digital signal terminals connected to one side of each switch |
| 2, 5, 11, 14 | B-side data I/O | Bi-directional analog/digital signal terminals connected to opposite side of each switch |
| 3, 6, 8, 12 | OEn (active-low) | Independent enable inputs per switch; low = connect A↔B, high = isolate |
| 7 | GND | Ground reference for all internal circuitry and signal return path |
| 14 | VCC | Primary supply rail (2.3V–3.6V); powers internal logic and switch biasing |
Key Features
| Feature | Design Value |
|---|---|
| Pin-out compatibility | Matches standard 74-series '125 logic footprint - enables drop-in replacement without PCB redesign |
| Bi-directional switching | 5Ω RON symmetric conduction - eliminates directionality constraints in data bus routing |
| Power-off isolation | IOFF ≤ 50 µA at VCC = 0 - prevents back-driving and leakage when upstream/downstream rails are unpowered |
| Over-voltage tolerance | VI/O rated to ±0.5V to +4.6V - allows safe operation with signals exceeding VCC, e.g., 5V-tolerant I/O in mixed-voltage systems |
Applications
| Memory Expansion Interface | FPGA I/O Buffering |
|---|---|
Use Scenario: Adding external SRAM or Flash to a microcontroller with limited address/data lines. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating memory data/address lines during access arbitration. Use Value: Enables shared bus topology with zero-latency pass-through and no level translation needed between 3.3V MCU and memory. | Use Scenario: Isolating configuration or debug interfaces between FPGA and host processor during reconfiguration. IC Role / Device Role / Timing Role: OE-controlled gate for JTAG, SPI, or I²C signals routed through FPGA I/O banks. Use Value: Prevents signal contention during partial reconfiguration and ensures clean hot-swap capability. |
| Hot-Swappable Backplane Slot | Mixed-Voltage System Interconnect |
Use Scenario: Enabling insertion/removal of line cards in telecom or industrial backplanes while main system remains powered. IC Role / Device Role / Timing Role: Bus isolation device placed between backplane data lanes and card-local logic. Use Value: Provides guaranteed high-Z state during power-up/power-down sequences, eliminating bus glitches and ground bounce. | Use Scenario: Interfacing 3.3V SoC peripherals with legacy 5V sensors or actuators via buffered I/O. IC Role / Device Role / Timing Role: Voltage-domain decoupling element with over-voltage tolerant I/O pins. Use Value: Allows safe 3.3V logic to drive/receive 5V signals without external clamping diodes or level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-voltage quadruple bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3125PWR | Same functional spec, TI-manufactured; RON = 5Ω typ. at 3.3V, tEN = 4.5 ns max, TSSOP-14 package | Identical pinout and DC/AC specs; differs only in manufacturer qualification and traceability documentation | Preferred for TI-centric BOMs or dual-sourcing programs requiring TI's reliability reporting |
| 74LVC1G3157GW,125 | Single-channel analog switch (not quad); RON = 10Ω typ.; smaller SC-70-6 package; lacks OE-per-channel granularity | Requires four discrete units to match channel count; higher board area and routing complexity | Only suitable when space-constrained designs accept added component count and reduced layout efficiency |
Compared with SN74CBTLV3125PWR, the 74CBTLV3125PGG8 offers identical electrical performance and pin compatibility but different supply-chain origin and lifecycle management. Against 74LVC1G3157GW,125, the 74CBTLV3125PGG8 delivers integrated quad functionality, lower RON, and per-switch OE control-reducing component count and improving timing predictability in multi-lane interfaces.
Availability
74CBTLV3125PGG8 is available at Aetrix Electronics and suitable for industrial control systems, telecom infrastructure modules, and FPGA-based prototyping platforms requiring stable component supply, long-term availability, and RoHS-compliant packaging.
Supply support for 74CBTLV3125PGG8 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 74CBTLV3125PGG8 belongs to Renesas' legacy IDT logic portfolio, designed specifically for high-speed, low-voltage bus switching in mixed-signal embedded systems where signal integrity, power sequencing robustness, and industrial temperature operation are critical.
FAQ
What is the maximum operating voltage for 74CBTLV3125PGG8 I/O pins?
The 74CBTLV3125PGG8 supports an absolute maximum input voltage of –0.5V to +4.6V on all I/O pins, regardless of VCC level. This over-voltage tolerance allows safe interfacing with 5V signals even when VCC is set to 3.3V or 2.5V, making the 74CBTLV3125PGG8 suitable for mixed-voltage system interconnect without external protection components.
Does 74CBTLV3125PGG8 require external pull-up resistors on OE pins?
Yes - to ensure a defined high-impedance state during power-up or power-down, each OE pin of the 74CBTLV3125PGG8 should be tied to VCC via a pull-up resistor. The minimum resistance value depends on the driver's current-sinking capability; typical values range from 4.7kΩ to 10kΩ. This prevents undefined switch states that could cause bus contention before system initialization completes.
Can 74CBTLV3125PGG8 be used in hot-swap applications?
Yes - the 74CBTLV3125PGG8 is explicitly designed for hot-swap use cases. Its power-off isolation (IOFF ≤ 50 µA at VCC = 0), over-voltage tolerant I/O, and latch-up immunity (>100 mA) ensure safe insertion and removal in live backplanes or modular systems. These characteristics make the 74CBTLV3125PGG8 ideal for telecom line cards and industrial rack-mounted equipment.
What is the typical on-resistance of 74CBTLV3125PGG8 at 2.5V supply?
At VCC = 2.5V, the 74CBTLV3125PGG8 exhibits a typical on-resistance (RON) of 5Ω when tested with 64mA current and VI = 0V. This low RON minimizes voltage drop and signal distortion, supporting clean 2.5V logic signaling in high-speed data paths such as DDR memory buffers or PCI Express sideband routing.
Is 74CBTLV3125PGG8 pin-compatible with older 74LVX3125 devices?
No - while both are quadruple bus switches, the 74CBTLV3125PGG8 is pin-compatible with standard 74'125 logic devices (e.g., 74ACT125, 74LVC125), not with 74LVX3125. The 74CBTLV3125PGG8 uses a TSSOP-14 package with dedicated OE-per-channel layout, whereas 74LVX3125 typically uses SOIC-14 with shared OE. Always verify pin mapping using the official 74CBTLV3125PGG8 datasheet before substitution.
74CBTLV3125PGG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74CBTLV
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 14-TSSOP
74CBTLV3125PGG8 FAQ
1.How can I place an order for 74CBTLV3125PGG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV3125PGG8 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 74CBTLV3125PGG8 reliable?
The price and inventory of 74CBTLV3125PGG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3125PGG8 is usually 5 days.
3.What payment methods are accepted for 74CBTLV3125PGG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV3125PGG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV3125PGG8?
74CBTLV3125PGG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV3125PGG8 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 74CBTLV3125PGG8?
For technical support, including 74CBTLV3125PGG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3125PGG8 requirements.
6.How does Aetrix verify that 74CBTLV3125PGG8 is sourced from the original manufacturer or authorized distributors?
All 74CBTLV3125PGG8 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 74CBTLV3125PGG8 meets industry standards.
7.What is the process for return or replacement of 74CBTLV3125PGG8?
All 74CBTLV3125PGG8 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3125PGG8, 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 74CBTLV3125PGG8 part is unused and in its original packaging.
Return procedure for 74CBTLV3125PGG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLV3125PGG8 Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
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
-
SN74HC138N
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
