Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Texas Instruments SN74CBTLV16211DLR

Name: SN74CBTLV16211DLR
Brand: Texas Instruments
SKU: SN74CBTLV16211DLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74CBTLV16211DLR

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: 56-BSSOP (0.295", 7.50mm Width)

Datasheet:: SN74CBTLV16211DLR.pdf

Description:: IC BUS SWITCH 12 X 1:1 56SSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,268

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SN74CBTLV16211DLR from Texas Instruments is a 24-bit high-speed FET bus switch IC with dual 12-bit configurable switching, 5-Ω typical on-state resistance, rail-to-rail signal handling (0–3.6 V), and I_off partial-power-down support. It operates from 2.3 V to 3.6 V and delivers sub-nanosecond propagation delay (0.15 ns typ at 2.5 V) for low-latency data path isolation in memory and interconnect applications.

For engineers reviewing the SN74CBTLV16211DLR datasheet, SN74CBTLV16211DLR pinout, SN74CBTLV16211DLR application, or SN74CBTLV16211DLR equivalent, key selection criteria include its 56-pin SSOP (DL) package, dual independent OE control, guaranteed 24-bit channel isolation during power sequencing, and compatibility with LVTTL/CMOS logic levels across industrial temperature range (−40°C to 85°C).

Technical Context

This device implements two independent 12-bit bidirectional FET switches, each controlled by a dedicated OE input-enabling flexible partitioning as either two 12-bit buses or one consolidated 24-bit bus. Its transmission-gate architecture provides symmetrical, low-capacitance signal paths without directionality constraints.

Designed for hot-swap and partial-power-down systems, the SN74CBTLV16211DLR features I_off protection that limits off-state current to ≤10 µA when V_CC = 0 V and any I/O is biased between 0–3.6 V, preventing backdrive damage and ensuring channel isolation during power transitions.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.3 V to 3.6 V - Enables direct interface with 2.5 V and 3.3 V logic domains without level translation.
On-State Resistance (r_on)	5 Ω typ - Minimizes voltage drop and signal distortion under 24 mA load, preserving signal integrity in high-speed parallel buses.
Propagation Delay (t_pd)	0.15 ns typ at 2.5 V - Supports >5 GHz effective switching bandwidth for ultra-low-latency data routing.
I_off Current	≤10 µA at V_CC = 0 V - Ensures safe operation during partial power-down; prevents back-current flow into powered subsystems.
Input/Output Voltage Range	−0.5 V to 4.6 V - Allows rail-to-rail analog/digital signal pass-through beyond supply rails, supporting mixed-voltage system interfacing.
ESD Protection	2000-V HBM, 200-V MM - Meets JEDEC JESD22-A114/A115 standards for robust handling in manufacturing and field environments.
Operating Temperature	−40°C to +85°C - Qualified for industrial-grade embedded systems requiring extended thermal reliability.

Pinout & Package

SN74CBTLV16211DLR uses a 56-pin Shrink Small-Outline Package (SSOP-DL), 11.4 mm × 7.9 mm body size, 0.5 mm lead pitch, and 1.2 mm max height per JEDEC MO-194. Pin 1 is located in Quadrant Q1 of the tape reel orientation.

Pin/Terminal	Circuit Role	Design Meaning
1A1–1A12, 2A1–2A12	Port A inputs/outputs (Group 1 & 2)	24 bidirectional data terminals for first and second 12-bit bus segments; electrically identical and interchangeable within group.
1B1–1B12, 2B1–2B12	Port B inputs/outputs (Group 1 & 2)	24 corresponding bidirectional data terminals; connected to respective A-side ports when OE is asserted low.
1OE, 2OE	Output-enable controls (active-low)	Independent enable inputs per 12-bit section; OE = low enables A↔B connection; OE = high places port in high-Z state.
V_CC	Positive supply	Single 2.3–3.6 V supply powers all internal circuitry and defines logic thresholds; no separate I/O supply required.
GND (Pins 8, 23, 36, 51)	Ground reference	Four dedicated ground pins minimize ground bounce and improve noise immunity across high-speed switching channels.
NC (Pins 1, 56)	No internal connection	Unbonded pads; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress.

Key Features

Feature	Design Value
Rail-to-rail analog/digital switching	Supports signal voltages from −0.5 V to 4.6 V regardless of V_CC, enabling interoperability with legacy 5 V systems and mixed-supply architectures.
Dual independent OE control	Allows dynamic segmentation of 24-bit bus into two isolated 12-bit domains-critical for memory interleaving, test access, or multi-master arbitration.
I_off partial-power-down protection	Guarantees <10 µA leakage when V_CC = 0 V and I/O pins are biased, eliminating need for external isolation diodes or power sequencing controllers.
Ultra-low on-resistance (5 Ω typ)	Reduces insertion loss and timing skew across all 24 channels, maintaining signal fidelity in DDR, PCI, and parallel flash interfaces.
Sub-nanosecond propagation delay	0.15 ns typical delay ensures minimal added latency in high-throughput data paths-essential for real-time instrumentation and packet forwarding.

Applications

Memory Interleaving	PCI Bus Isolation
Use Scenario: Splitting a 24-bit data bus between two SDRAM banks operating on staggered clock phases to double effective bandwidth. IC Role / Device Role / Timing Role: Bidirectional bus switch providing time-multiplexed access to shared address/data lines while maintaining signal integrity and timing margins. Use Value: Eliminates need for complex multiplexer timing logic; preserves nanosecond-level setup/hold timing due to 5 Ω r_on and 0.15 ns t_pd.	Use Scenario: Isolating legacy PCI add-in cards from host bridge during hot-plug events or firmware reconfiguration. IC Role / Device Role / Timing Role: High-speed signal gate enabling/disabling entire 32-bit PCI data/address bus under software-controlled OE signals. Use Value: Prevents bus contention and backdrive damage during power transitions; I_off compliance ensures safety even if card remains partially powered.
Test Access Multiplexing	FPGA Configuration Routing
Use Scenario: Sharing a single JTAG or boundary-scan controller across multiple ASICs on a dense PCB using time-division switching. IC Role / Device Role / Timing Role: Low-latency, bidirectional switch enabling sequential access to TDI/TDO/TMS/TCK lines without signal degradation. Use Value: Maintains JTAG timing compliance up to 50 MHz; 4.5 pF input capacitance minimizes clock jitter and reflection-induced bit errors.	Use Scenario: Dynamically rerouting configuration bitstreams from multiple PROM sources to different FPGA banks during partial reconfiguration cycles. IC Role / Device Role / Timing Role: High-fidelity data path selector supporting 3.3 V LVTTL configuration protocols with rail-to-rail voltage tolerance. Use Value: Enables zero-latency source switching without level shifters; 2000-V HBM ESD rating protects sensitive FPGA configuration pins during board handling.

Memory Interleaving

PCI Bus Isolation

Use Scenario: Splitting a 24-bit data bus between two SDRAM banks operating on staggered clock phases to double effective bandwidth.

IC Role / Device Role / Timing Role: Bidirectional bus switch providing time-multiplexed access to shared address/data lines while maintaining signal integrity and timing margins.

Use Value: Eliminates need for complex multiplexer timing logic; preserves nanosecond-level setup/hold timing due to 5 Ω r_on and 0.15 ns t_pd.

Use Scenario: Isolating legacy PCI add-in cards from host bridge during hot-plug events or firmware reconfiguration.

IC Role / Device Role / Timing Role: High-speed signal gate enabling/disabling entire 32-bit PCI data/address bus under software-controlled OE signals.

Use Value: Prevents bus contention and backdrive damage during power transitions; I_off compliance ensures safety even if card remains partially powered.

Test Access Multiplexing

FPGA Configuration Routing

Use Scenario: Sharing a single JTAG or boundary-scan controller across multiple ASICs on a dense PCB using time-division switching.

IC Role / Device Role / Timing Role: Low-latency, bidirectional switch enabling sequential access to TDI/TDO/TMS/TCK lines without signal degradation.

Use Value: Maintains JTAG timing compliance up to 50 MHz; 4.5 pF input capacitance minimizes clock jitter and reflection-induced bit errors.

Use Scenario: Dynamically rerouting configuration bitstreams from multiple PROM sources to different FPGA banks during partial reconfiguration cycles.

IC Role / Device Role / Timing Role: High-fidelity data path selector supporting 3.3 V LVTTL configuration protocols with rail-to-rail voltage tolerance.

Use Value: Enables zero-latency source switching without level shifters; 2000-V HBM ESD rating protects sensitive FPGA configuration pins during board handling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBTLV3861RGYR	40-pin TSSOP; 10-bit dual-channel; 6 Ω r_on; same V_CC range and I_off support.	Lower channel count (20 bits total); smaller footprint but requires two devices for 24-bit coverage.	Select when board space is constrained and 20-bit granularity suffices; not a drop-in replacement due to pin count and layout mismatch.
SN74CBT16212DGGR	56-pin TSSOP (DGG); 24-bit; 7 Ω r_on; 4.5 V max V_I; no I_off specification.	Higher on-resistance increases voltage drop; lacks I_off protection-requires strict power sequencing.	Choose only in cost-sensitive, fully powered systems where partial-power-down is not required; incompatible for hot-swap designs.

Compared with SN74CBTLV16211DLR, SN74CBTLV3861RGYR offers higher density per package but reduced channel count and no pin compatibility, while SN74CBT16212DGGR trades off I_off safety and lower r_on for broader voltage tolerance-making SN74CBTLV16211DLR the optimal choice for industrial hot-swap and mixed-rail systems.

Availability

SN74CBTLV16211DLR is available at Aetrix Electronics and suitable for memory subsystems, PCI expansion interfaces, boundary-scan test infrastructure, and FPGA configuration routing requiring stable component supply across industrial temperature and long-lifecycle programs.

Supply support for SN74CBTLV16211DLR 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 connectivity technologies, with over 50 years of innovation in high-reliability interface solutions.

The SN74CBTLV16211DLR belongs to TI's Widebus™ family of high-speed bus switches, engineered specifically for low-latency, low-distortion signal routing in memory, interconnect, and test-access applications demanding rail-to-rail operation and robust power sequencing behavior.

FAQ

What is the maximum data rate supported by the SN74CBTLV16211DLR?

The SN74CBTLV16211DLR does not specify a fixed data rate limit, but its 0.15 ns typical propagation delay and 5 Ω on-resistance enable reliable operation with signal edges faster than 1 ns rise/fall times. In practice, it supports DDR memory interfaces, PCI-X, and high-speed parallel buses up to ~500 MHz clock rates when combined with appropriate PCB layout and termination.

Can the SN74CBTLV16211DLR be used with 5 V logic signals?

Yes-the SN74CBTLV16211DLR accepts input voltages from −0.5 V to 4.6 V regardless of V_CC (2.3–3.6 V), allowing safe interfacing with 5 V-tolerant systems. However, output swing is clamped to V_CC, so 5 V signals appear as clipped 3.6 V peaks at the B-port when V_CC = 3.6 V; external level-shifting may be needed for full 5 V drive capability.

How should unused OE pins be handled on the SN74CBTLV16211DLR?

Unused OE inputs must be held at a valid logic level-either tied to V_CC via a pullup resistor (minimum value determined by driver sink strength) or grounded-to prevent floating states that could cause undefined switching behavior. TI recommends pullup to V_CC to ensure default high-impedance mode during power-up sequences.

Does the SN74CBTLV16211DLR require external decoupling capacitors?

Yes-TI specifies use of 0.1 µF ceramic decoupling capacitors placed as close as possible to each V_CC pin (Pin 22) and adjacent GND pins (Pins 8, 23, 36, 51). This mitigates high-frequency switching noise and maintains stable supply voltage during simultaneous 24-bit transitions, directly impacting propagation delay consistency and crosstalk performance.

Is the SN74CBTLV16211DLR RoHS compliant and lead-free?

Yes-the SN74CBTLV16211DLR is RoHS compliant with lead-free NIPDAU (Nickel/Palladium/Gold) terminal finish, rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), and qualified for peak reflow temperatures up to 260°C per JEDEC J-STD-020. Full compliance documentation is available in TI's Package Option Addendum.

SN74CBTLV16211DLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74CBTLV

Package/Case:: 56-BSSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Bus Switch

Circuit:: 12 x 1:1

Independent Circuits:: 2

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:: 56-SSOP

SN74CBTLV16211DLR FAQ

1.How can I place an order for SN74CBTLV16211DLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74CBTLV16211DLR 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 SN74CBTLV16211DLR reliable?

The price and inventory of SN74CBTLV16211DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBTLV16211DLR is usually 5 days.

3.What payment methods are accepted for SN74CBTLV16211DLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74CBTLV16211DLR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74CBTLV16211DLR?

SN74CBTLV16211DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74CBTLV16211DLR 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 SN74CBTLV16211DLR?

For technical support, including SN74CBTLV16211DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBTLV16211DLR requirements.

6.How does Aetrix verify that SN74CBTLV16211DLR is sourced from the original manufacturer or authorized distributors?

All SN74CBTLV16211DLR 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 SN74CBTLV16211DLR meets industry standards.

7.What is the process for return or replacement of SN74CBTLV16211DLR?

All SN74CBTLV16211DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBTLV16211DLR, 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 SN74CBTLV16211DLR part is unused and in its original packaging.

Return procedure for SN74CBTLV16211DLR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…