My Inquiry
My Account
Texas Instruments 74CBTLV1G125DBVRQ1
- Part No.:
- 74CBTLV1G125DBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74CBTLV1G125DBVRQ1.pdf
- Description:
- IC BUS SWITCH 1 X 1:1 SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,279
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74CBTLV1G125DBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified single-channel FET bus switch for automotive signal routing, featuring 5-Ω on-state resistance, rail-to-rail switching (2.3 V to 3.6 V), and Ioff partial-power-down protection. It operates from –40°C to +125°C and is used in ventilator control logic isolation paths.
For engineers reviewing the 74CBTLV1G125DBVRQ1 datasheet, 74CBTLV1G125DBVRQ1 pinout, 74CBTLV1G125DBVRQ1 application, or 74CBTLV1G125DBVRQ1 equivalent, key selection criteria include low on-resistance timing integrity, OE-active-low enable behavior, Ioff current limiting under power-off conditions, and SOT-23 (DBV) 5-pin thermal performance (RθJA = 249.2°C/W).
Technical Context
This device implements a single bidirectional 1:1 FET switch with active-low output-enable (OE) control. Its architecture enables zero-delay signal pass-through when enabled and high-impedance isolation when disabled - critical for hot-swap and power-gating scenarios.
It supports rail-to-rail I/O voltage swing across its A and B ports, maintains sub-0.25 ns propagation delay at 2.5 V and 3.3 V, and guarantees Ioff leakage ≤100 µA when VCC = 0 V and OE = 0 V - ensuring robust backflow prevention during system partial power-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5 Ω typical at VCC = 3 V, enabling minimal voltage drop and signal distortion in high-speed data paths |
| Propagation delay (tpd) | 0.15–0.25 ns at VCC = 2.5 V/3.3 V, preserving signal edge integrity in >1 GHz digital interfaces |
| Ioff leakage current | ≤100 µA at VCC = 0 V, OE = 0 V, preventing damaging back-current during unpowered states |
| Supply voltage range | 2.3 V to 3.6 V, compatible with modern low-voltage automotive microcontrollers and FPGAs |
| Operating temperature | –40°C to +125°C (Grade 1), validated per AEC-Q100 for under-hood and cabin electronics |
| ESD rating (HBM) | ±2000 V per AEC-Q100-002, supporting robust handling in production and field environments |
| Input capacitance (Ci) | 2.5 pF, minimizing capacitive loading on driving logic and reducing timing skew |
Pinout & Package
SOT-23 (DBV) 5-pin package: 2.90 mm × 1.60 mm body, 1.45 mm max height, moisture sensitivity level 1 (260°C peak reflow), RoHS-compliant NIPDAU finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low enable input | Drives internal FET gate; must be pulled up to VCC via external resistor to ensure defined high-Z state at power-up/down |
| 2 (A) | Bidirectional I/O port | Connects to source-side logic; supports full rail-to-rail voltage swing and 32 mA continuous channel current |
| 3 (GND) | Ground reference | Primary return path for switch current and internal bias; requires low-inductance PCB connection |
| 4 (B) | Bidirectional I/O port | Connects to load-side logic; electrically identical to A pin; enables flexible signal direction assignment |
| 5 (VCC) | Power supply | Supplies switch FET bias; requires local 0.1-µF ceramic decoupling capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C ambient, including thermal cycling and vibration testing |
| 5-Ω low on-resistance | Ensures <10 mV voltage drop at 2 mA signal current, preserving logic thresholds in 3.3 V and 2.5 V systems |
| Rail-to-rail I/O capability | Supports full 0 V to VCC signal swing on both A and B ports without level-shifting circuitry |
| Ioff partial-power-down protection | Blocks reverse current flow when VCC = 0 V, enabling safe interconnection of powered/unpowered subsystems |
| Sub-1 ns enable/disable timing | ten/tdis ≤7.5 ns ensures rapid, glitch-free bus arbitration and dynamic signal path reconfiguration |
Applications
| Ventilator Control Logic Isolation | Automotive Body Control Module (BCM) Signal Routing |
|---|---|
Use Scenario: Isolating microcontroller GPIO lines from motor driver inputs during fault conditions or firmware updates. IC Role / Device Role / Timing Role: Bidirectional signal switch enabling/disabling communication paths between MCU and actuator drivers. Use Value: Prevents unintended actuation during reset sequences and eliminates need for discrete MOSFET+resistor isolation networks. |
Use Scenario: Dynamically connecting sensor outputs (e.g., door latch status) to multiple diagnostic or ECU monitoring channels. IC Role / Device Role / Timing Role: Low-latency, low-distortion signal multiplexer controlled by BCM firmware. Use Value: Reduces PCB layer count vs. mechanical relays and avoids timing jitter introduced by optocouplers. |
| Infotainment System Audio Data Switching | ADAS Camera Interface Signal Conditioning |
Use Scenario: Selecting between primary and backup audio codec outputs in head unit designs with dual-source redundancy. IC Role / Device Role / Timing Role: High-fidelity analog/digital audio path selector with negligible THD impact. Use Value: Maintains SNR >90 dB due to 5-Ω ron and <2.5 pF Ci, eliminating need for op-amp buffering stages. |
Use Scenario: Enabling/disabling LVDS or MIPI CSI-2 camera data lanes during sleep/wake transitions in surround-view systems. IC Role / Device Role / Timing Role: Low-capacitance, high-speed data lane gate with sub-0.25 ns tpd. Use Value: Preserves signal integrity at 1.5 Gbps without equalization, reducing EMI and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV1G125 | Non-automotive (catalog) version; same electrical specs but no AEC-Q100 qualification or Grade 1 temp range | Limited to industrial/commercial environments; not suitable for automotive safety-critical modules | Select only if operating temperature stays within –40°C to +85°C and automotive qualification is unnecessary |
| 74LVC1G3157GW,125 | Higher ron (12 Ω typical), lower ESD (±2 kV HBM), no Ioff spec; uses different enable polarity (active-high) | Not validated for automotive use; lacks partial-power-down protection for mixed-voltage domain isolation | Acceptable for cost-sensitive non-automotive applications where 7 Ω higher ron and missing Ioff are acceptable |
Compared with 74CBTLV1G125DBVRQ1, SN74CBTLV1G125 offers identical functionality without automotive qualification, while 74LVC1G3157GW,125 trades off on-resistance, Ioff protection, and AEC-Q100 compliance for broader commercial availability - making 74CBTLV1G125DBVRQ1 the only choice for Grade 1 automotive signal gating.
Availability
74CBTLV1G125DBVRQ1 is available at Aetrix Electronics and suitable for ventilator control logic isolation, automotive body control module (BCM) signal routing, and ADAS camera interface signal conditioning requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74CBTLV1G125DBVRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive-grade ICs, with over 50 years of innovation in high-reliability electronic components.
The SN74CBTLV1G125-Q1 belongs to TI's automotive-qualified logic portfolio, designed specifically for signal integrity preservation and power-domain isolation in safety-critical vehicle subsystems.
FAQ
What is the maximum continuous current rating for the 74CBTLV1G125DBVRQ1 switch channel?
The 74CBTLV1G125DBVRQ1 supports a continuous channel current of 128 mA, verified per absolute maximum ratings. This rating applies across the full operating temperature range (–40°C to +125°C) and ensures reliable conduction without thermal derating in typical automotive PCB layouts with moderate copper area.
Does the 74CBTLV1G125DBVRQ1 support bidirectional signal flow between pins A and B?
Yes, the 74CBTLV1G125DBVRQ1 is fully bidirectional: pins A and B are functionally identical I/O terminals with symmetric on-resistance and capacitance. Signal direction is determined solely by external circuit topology - no internal directionality or voltage-level dependency exists.
How does the Ioff feature of the 74CBTLV1G125DBVRQ1 protect downstream circuits during power-down?
When VCC = 0 V and OE = 0 V, the 74CBTLV1G125DBVRQ1 limits Ioff leakage to ≤100 µA, preventing damaging back-current from powered downstream nodes into the unpowered IC. This protects internal FET junctions and maintains isolation integrity in partial-power-down architectures.
What is the recommended pull-up resistor value for the OE pin of the 74CBTLV1G125DBVRQ1?
Texas Instruments recommends tying OE to VCC via a pull-up resistor whose minimum value is determined by the current-sinking capability of the driving logic. For standard 3.3 V CMOS drivers, a 10 kΩ resistor provides sufficient noise margin while limiting current to <0.3 mA - ensuring fast, glitch-free enable transitions.
Is the 74CBTLV1G125DBVRQ1 pin-compatible with the commercial SN74CBTLV1G125?
Yes, the 74CBTLV1G125DBVRQ1 shares identical pinout, package (SOT-23 DBV), and electrical behavior with the SN74CBTLV1G125. The only differences are AEC-Q100 qualification, extended temperature validation (–40°C to +125°C), and automotive-specific reliability testing - all implemented without altering pin function or layout.
74CBTLV1G125DBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBTLV
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 1 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
74CBTLV1G125DBVRQ1 FAQ
1.How can I place an order for 74CBTLV1G125DBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV1G125DBVRQ1 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 74CBTLV1G125DBVRQ1 reliable?
The price and inventory of 74CBTLV1G125DBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV1G125DBVRQ1 is usually 5 days.
3.What payment methods are accepted for 74CBTLV1G125DBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV1G125DBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV1G125DBVRQ1?
74CBTLV1G125DBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV1G125DBVRQ1 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 74CBTLV1G125DBVRQ1?
For technical support, including 74CBTLV1G125DBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV1G125DBVRQ1 requirements.
6.How does Aetrix verify that 74CBTLV1G125DBVRQ1 is sourced from the original manufacturer or authorized distributors?
All 74CBTLV1G125DBVRQ1 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 74CBTLV1G125DBVRQ1 meets industry standards.
7.What is the process for return or replacement of 74CBTLV1G125DBVRQ1?
All 74CBTLV1G125DBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV1G125DBVRQ1, 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 74CBTLV1G125DBVRQ1 part is unused and in its original packaging.
Return procedure for 74CBTLV1G125DBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLV1G125DBVRQ1 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
