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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Renesas 74CBTLV3861PGG8

Name: 74CBTLV3861PGG8
Brand: Renesas
SKU: 74CBTLV3861PGG8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74CBTLV3861PGG8

Manufacturer:: Renesas

Category:: Signal Switches, Multiplexers, Decoders

Package:: 24-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74CBTLV3861PGG8.pdf

Description:: IC BUS SWITCH 10BIT LV 24-TSSOP

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Product details

Overview

74CBTLV3861PGG8 from Renesas Electronics is a low-voltage 10-bit bus switch IC with bi-directional 5Ω on-resistance, 2.3V–3.6V supply operation, and industrial temperature range (−40°C to +85°C), used for high-speed 3.3V bus isolation and switching in memory expansion and data path routing.

For engineers reviewing the 74CBTLV3861PGG8 datasheet, 74CBTLV3861PGG8 pinout, 74CBTLV3861PGG8 application, or 74CBTLV3861PGG8 equivalent, key selection criteria include propagation delay ≤0.25ns, OE-controlled A/B port connection/disconnection, over-voltage tolerance up to +4.6V, and TSSOP-24 package compatibility with high-density PCB layouts.

Technical Context

The 74CBTLV3861PGG8 implements ten independent analog bus switches controlled by a single active-low output enable (OE) input; each switch exhibits symmetrical bi-directional conduction with minimal RC delay due to low R_ON (5Ω typical at V_CC = 3V, I_O = 24mA) and low C_IO(OFF) (6pF).

It supports power-off isolation with I_OFF ≤50µA and over-voltage tolerance on I/O pins up to +4.6V regardless of V_CC state, enabling safe hot-insertion and mixed-voltage domain interfacing without level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3V to 3.6V - Enables direct interface with 2.5V and 3.3V logic systems without external regulators.
R_ON (Typ.)	5Ω at V_CC = 3V, I_O = 24mA - Minimizes voltage drop and signal distortion in high-speed data paths.
t_PD	≤0.25ns - Supports >1GHz signal integrity in backplane and memory bus applications.
I_OFF	≤50µA at V_CC = 0 - Ensures robust isolation during power sequencing or standby modes.
C_IO(OFF)	6pF - Reduces capacitive loading on driven nets, preserving edge rates in multi-drop buses.
ESD Rating	>2000V HBM, >200V MM - Meets industrial system-level ESD immunity requirements without added protection.
Operating Temp	−40°C to +85°C - Qualified for use in industrial control, telecom infrastructure, and embedded computing.

Pinout & Package

TSSOP-24 (PGG24) package with 0.65mm pitch, 7.8mm × 4.4mm body, and exposed pad not present; RoHS-compliant, green finish.

Pin/Terminal	Circuit Role	Design Meaning
1, 24	V_CC, GND	Power and ground reference for internal switch biasing and OE logic; decoupling required within 5mm.
2, 23	A1, B1	Bi-directional data channel pair - no internal directionality; signal flows A→B or B→A identically.
3–10, 15–22	A2–A8, B2–B8	Remaining eight A/B channel pairs - electrically identical to A1/B1 with matched R_ON and timing.
11, 14	A9, B9	Ninth channel pair - shares same DC and AC specs; pinout symmetry enables layout mirroring.
12, 13	GND, B10	Dedicated ground pin adjacent to B10 - reduces ground bounce on high-frequency switching of final bit.
23	OE	Active-low output enable - must be pulled up to V_CC via resistor during power-up to guarantee high-impedance default state.

Key Features

Feature	Design Value
5Ω Bi-directional Switch	Enables sub-100mV voltage drop at 24mA, preserving logic thresholds across 10-bit parallel buses.
Power-Off Isolation	Maintains <50µA leakage between A/B ports when V_CC = 0, preventing back-driving of powered subsystems.
+4.6V Over-Voltage Tolerance	Allows safe connection to 5V-tolerant nodes without clamping diodes or level translators.
0.25ns Propagation Delay	Supports clean transmission of fast edges in DDR memory buffers and PCIe sideband routing.
Latch-up Immunity	Exceeds 100mA per JEDEC JESD78 - eliminates risk of destructive latch-up in noisy industrial environments.

Applications

Memory Expansion Interface	PCIe Sideband Signal Routing
Use Scenario: Adding secondary SDRAM or Flash memory banks to microcontroller-based industrial controllers. IC Role / Device Role / Timing Role: 10-bit bidirectional bus switch isolating memory address/data lines during bank switching. Use Value: Eliminates contention between memory banks using OE-controlled break-before-make switching with <0.25ns skew.	Use Scenario: Routing SMBus, JTAG, or CLKREQ# signals between PCIe root complex and endpoint devices. IC Role / Device Role / Timing Role: Low-capacitance, low-R_ON signal switch enabling shared sideband bus access without signal degradation. Use Value: 6pF off-capacitance and 5Ω R_ON preserve rise/fall times and noise margins on 100kHz–1MHz sideband links.
Hot-Swappable Module Interconnect	Multi-Voltage Domain Data Bridge
Use Scenario: Backplane slots supporting field-replaceable modules with independent power sequencing. IC Role / Device Role / Timing Role: Isolating data lanes during insertion/removal while maintaining +4.6V I/O tolerance on unpowered modules. Use Value: Prevents back-powering and latch-up via I_OFF ≤50µA and over-voltage tolerant I/O pins.	Use Scenario: Bridging 2.5V FPGA I/O banks to 3.3V peripheral interfaces in test equipment. IC Role / Device Role / Timing Role: Voltage-agnostic bus switch enabling level translation-free interconnection. Use Value: Operates correctly across 2.3V–3.6V V_CC range while tolerating up to +4.6V on I/O, eliminating external level shifters.

Memory Expansion Interface

PCIe Sideband Signal Routing

Use Scenario: Adding secondary SDRAM or Flash memory banks to microcontroller-based industrial controllers.

IC Role / Device Role / Timing Role: 10-bit bidirectional bus switch isolating memory address/data lines during bank switching.

Use Value: Eliminates contention between memory banks using OE-controlled break-before-make switching with <0.25ns skew.

Use Scenario: Routing SMBus, JTAG, or CLKREQ# signals between PCIe root complex and endpoint devices.

IC Role / Device Role / Timing Role: Low-capacitance, low-R_ON signal switch enabling shared sideband bus access without signal degradation.

Use Value: 6pF off-capacitance and 5Ω R_ON preserve rise/fall times and noise margins on 100kHz–1MHz sideband links.

Hot-Swappable Module Interconnect

Multi-Voltage Domain Data Bridge

Use Scenario: Backplane slots supporting field-replaceable modules with independent power sequencing.

IC Role / Device Role / Timing Role: Isolating data lanes during insertion/removal while maintaining +4.6V I/O tolerance on unpowered modules.

Use Value: Prevents back-powering and latch-up via I_OFF ≤50µA and over-voltage tolerant I/O pins.

Use Scenario: Bridging 2.5V FPGA I/O banks to 3.3V peripheral interfaces in test equipment.

IC Role / Device Role / Timing Role: Voltage-agnostic bus switch enabling level translation-free interconnection.

Use Value: Operates correctly across 2.3V–3.6V V_CC range while tolerating up to +4.6V on I/O, eliminating external level shifters.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBTLV3861PWR	Same 10-bit function, 5Ω R_ON, but TSSOP-24 package with different thermal pad design and moisture sensitivity level (MSL 1 vs MSL 3 for 74CBTLV3861PGG8).	Identical use in bus isolation; SN74CBTLV3861PWR has tighter t_EN/t_DIS spec (3.5ns max) but higher C_IO(OFF) (7.5pF).	Select SN74CBTLV3861PWR for faster enable/disable where board-level humidity control is available.
74LVC1G3157GW,125	Single-pole double-throw (SPDT) analog switch, not 10-bit; R_ON = 10Ω, V_CC = 1.65–5.5V, smaller SC-70-6 package.	Used for individual signal routing rather than parallel bus switching; lacks multi-bit synchronization or OE-driven group control.	Choose 74LVC1G3157GW,125 only for discrete signal switching where density and wide V_CC range outweigh parallel-channel needs.

Compared with SN74CBTLV3861PWR and 74LVC1G3157GW,125, the 74CBTLV3861PGG8 uniquely delivers synchronized 10-bit switching in an industrial-grade TSSOP-24 with optimized off-capacitance (6pF) and guaranteed −40°C to +85°C operation - critical for deterministic bus arbitration in programmable logic controllers and base station radios.

Availability

74CBTLV3861PGG8 is available at Aetrix Electronics and suitable for industrial control systems, telecom infrastructure hardware, and embedded computing platforms requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74CBTLV3861PGG8 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 74CBTLV3861PGG8 belongs to Renesas' CBTLV family of low-voltage bus switches, engineered specifically for high-speed, low-distortion signal routing in 2.5V/3.3V digital systems with strict timing and isolation requirements.

FAQ

What is the maximum operating voltage on the I/O pins of the 74CBTLV3861PGG8?

The 74CBTLV3861PGG8 supports an absolute maximum I/O voltage of +4.6V, independent of V_CC level. This over-voltage tolerance allows safe interfacing with higher-voltage domains (e.g., 5V peripherals) without external clamping, provided V_CC remains within its 2.3V–3.6V operating range. The 74CBTLV3861PGG8 maintains this rating across the full industrial temperature range.

How does the 74CBTLV3861PGG8 behave during power-up or power-down sequences?

The 74CBTLV3861PGG8 enters a high-impedance state when OE is high, but to ensure predictable behavior during power transitions, OE must be tied to V_CC via a pull-up resistor. The 74CBTLV3861PGG8 guarantees isolation (I_OFF ≤50µA) even when V_CC = 0, preventing back-current flow between unpowered and powered sections of the system.

Can the 74CBTLV3861PGG8 be used in a 2.5V system?

Yes, the 74CBTLV3861PGG8 is fully specified for 2.5V operation (V_CC = 2.3V–2.7V range), with validated R_ON ≤8Ω, t_PD ≤0.25ns, and VIH/VIL thresholds compatible with 2.5V logic families. Its 2.3V minimum V_CC ensures reliable function in margin-constrained 2.5V rails, making the 74CBTLV3861PGG8 suitable for legacy ASIC/FPGA interfaces.

What is the recommended OE pull-up resistor value for the 74CBTLV3861PGG8?

The minimum OE pull-up resistor value depends on the current-sinking capability of the driving source. For standard CMOS drivers with ≥4mA sink strength, a 10kΩ resistor to V_CC is sufficient to ensure OE remains solidly high during power-up. The 74CBTLV3861PGG8's II input current is ≤±1µA, so higher values (up to 100kΩ) may be used if noise immunity permits - always verify with actual board-level rise time measurements.

Does the 74CBTLV3861PGG8 support hot-swap applications?

Yes, the 74CBTLV3861PGG8 is designed for hot-swap use: its over-voltage tolerant I/O pins (+4.6V), power-off isolation (I_OFF ≤50µA), and latch-up immunity (>100mA) meet key requirements for live-insertion systems. When combined with proper OE sequencing and current-limiting on V_CC, the 74CBTLV3861PGG8 enables robust hot-plug capability in modular backplanes and server mezzanine cards.

74CBTLV3861PGG8 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: 74CBTLV

Package/Case:: 24-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Bus Switch

Circuit:: 10 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 ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-TSSOP

74CBTLV3861PGG8 FAQ

1.How can I place an order for 74CBTLV3861PGG8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74CBTLV3861PGG8 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 74CBTLV3861PGG8 reliable?

The price and inventory of 74CBTLV3861PGG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3861PGG8 is usually 5 days.

3.What payment methods are accepted for 74CBTLV3861PGG8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV3861PGG8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74CBTLV3861PGG8?

74CBTLV3861PGG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74CBTLV3861PGG8 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 74CBTLV3861PGG8?

For technical support, including 74CBTLV3861PGG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3861PGG8 requirements.

6.How does Aetrix verify that 74CBTLV3861PGG8 is sourced from the original manufacturer or authorized distributors?

All 74CBTLV3861PGG8 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 74CBTLV3861PGG8 meets industry standards.

7.What is the process for return or replacement of 74CBTLV3861PGG8?

All 74CBTLV3861PGG8 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3861PGG8, 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 74CBTLV3861PGG8 part is unused and in its original packaging.

Return procedure for 74CBTLV3861PGG8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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