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Texas Instruments SN74CBTLV16292DLR
- Part No.:
- SN74CBTLV16292DLR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74CBTLV16292DLR.pdf
- Description:
- IC MUX/DEMUX 12 X 1:2 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,300
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Product details
Overview
SN74CBTLV16292DLR from Texas Instruments is a 12-bit 1-of-2 high-speed FET multiplexer/demultiplexer with 4-Ω on-state resistance, rail-to-rail switching, and Ioff support for partial-power-down operation. It implements make-before-break switching and integrates internal 500-Ω pulldown resistors to ground. Used in high-speed data routing applications such as memory expansion and bus isolation in industrial control systems.
For engineers reviewing the SN74CBTLV16292DLR datasheet, SN74CBTLV16292DLR pinout, SN74CBTLV16292DLR application, or SN74CBTLV16292DLR equivalent, key selection criteria include its 12-bit dual-port configuration, 0.15 ns typical propagation delay at 2.5 V, ±1 µA input leakage, and SSOP-56 package compatibility with legacy Widebus™ designs.
Technical Context
This device operates as a bidirectional analog/digital switch with two independent 12-bit ports (A, B1/B2) and one RINT terminal, controlled by a single select (S) input. Its FET-based architecture enables rail-to-rail signal pass-through without level translation, supporting 2.3 V to 3.6 V supply operation.
The Ioff feature actively blocks current backflow when VCC = 0 V, ensuring isolation during partial power-down. The make-before-break timing (≤2 ns) prevents signal interruption during port switching, while internal 500-Ω pulldowns stabilize unconnected B-port terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 12-bit 1-of-2 mux/demux with bidirectional signal routing between Port A and either Port B1 or B2 |
| On-state resistance (ron) | Typical 3–7 Ω at VCC = 3 V; ensures minimal voltage drop and signal attenuation in high-current paths |
| Propagation delay (tpd) | 0.15–0.25 ns (A↔B); enables sub-nanosecond timing integrity in DDR and parallel bus applications |
| Ioff current | 10 µA max at VCC = 0 V; guarantees safe hot-insertion and system-level power sequencing |
| Supply voltage range | 2.3 V to 3.6 V; compatible with 2.5 V and 3.3 V logic domains without external level shifters |
| Input leakage (II) | ±1 µA max; reduces static power draw and avoids unintended loading of upstream drivers |
| Make-before-break time | 0–2 ns; eliminates glitches during port reconfiguration in real-time data pipelines |
Pinout & Package
SN74CBTLV16292DLR uses a 56-pin SSOP (DL) package with 0.5 mm pitch, 11.4 mm × 7.9 mm body size, and 1.2 mm max height. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S | Select control input | Determines path: S = L → A↔B1 & RINT↔B2; S = H → A↔B2 & RINT↔B1 |
| 1A–12A | Port A inputs/outputs | Bidirectional data lines connected to source-side bus or controller |
| 1B1–12B1, 1B2–12B2 | Port B1/B2 inputs/outputs | Two independent 12-bit destination buses; each B-line pair shares one A-line via S control |
| RINT | Reference input terminal | Connected to B1 or B2 depending on S state; used for termination or reference routing |
| VCC | Power supply | Single 2.3–3.6 V supply powers all switches and logic; no separate analog/digital rails required |
| GND | Ground reference | Two dedicated GND pins (pins 8 and 38) minimize ground bounce in high-speed switching |
| NC | No internal connection | 14 pins (e.g., pins 3,5,7,9,…,55) are unused; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports full 0 V to VCC signal swing without clipping-critical for mixed-signal bus bridging |
| Ioff partial-power-down protection | Prevents backdrive current flow when VCC = 0 V, enabling safe insertion into live backplanes |
| Make-before-break switching | Ensures continuous signal path during port transition-eliminates momentary open-circuit faults |
| Internal 500-Ω pulldown resistors | Stabilizes floating B-port terminals to GND, avoiding undefined logic states in unpopulated configurations |
| Low on-state resistance (4 Ω typ) | Minimizes insertion loss and timing skew across all 12 channels-essential for parallel bus integrity |
Applications
| Memory Expansion Interface | Industrial PLC Backplane |
|---|---|
|
Use Scenario: Expanding address/data bus width between microcontroller and multiple SRAM/Flash devices using shared physical traces. IC Role / Device Role / Timing Role: Bidirectional 12-bit mux routes A-lines to either B1 (Bank 1) or B2 (Bank 2) under S control; maintains nanosecond timing alignment. Use Value: Eliminates need for discrete logic or CPLDs; 0.15 ns tpd preserves setup/hold margins in 100+ MHz parallel interfaces. |
Use Scenario: Isolating field I/O modules from central CPU bus during firmware updates or fault recovery. IC Role / Device Role / Timing Role: Acts as hot-swap-capable bus gate; Ioff blocks backfeed when module power is cycled independently. Use Value: Enables maintenance without system shutdown; internal pulldowns prevent floating bus states during disconnection. |
| Test Equipment Signal Routing | Legacy Bus Protocol Translation |
|
Use Scenario: Reconfigurable signal path in automated test equipment connecting DUT pins to measurement instruments. IC Role / Device Role / Timing Role: 12-channel analog/digital switch selects between two instrument sets (B1/B2) using single S line for synchronized routing. Use Value: 4 Ω ron and 22.5 pF Cio preserve signal fidelity up to 200 MHz; make-before-break prevents transient shorts. |
Use Scenario: Adapting 2.5 V ASIC outputs to 3.3 V FPGA inputs in mixed-voltage board designs. IC Role / Device Role / Timing Role: Level-agnostic FET switch passes signals across voltage domains without translation logic or direction control. Use Value: Supports rail-to-rail operation from 0 V to VCC; eliminates level shifter latency and power overhead in high-speed control paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit mux/demux applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3861RGYR | 24-bit, 1-of-2 mux in 56-pin VQFN; higher channel count but no RINT terminal or internal pulldowns | Requires external termination; suited for wider buses but lacks integrated B-port stabilization | Choose when scaling to 24-bit width and PCB space allows VQFN; not drop-in due to different pinout and missing RINT |
| SN74CBT16292DGGR | Same 12-bit function but BiCMOS process; 7 Ω ron, no Ioff, -40°C to 85°C rating | Lacks partial-power-down capability; unsuitable for hot-swap or dynamic power gating | Acceptable only in always-powered systems; avoid where VCC sequencing or isolation is required |
Compared with SN74CBTLV16292DLR, SN74CBTLV3861RGYR offers double channel density but sacrifices RINT routing and pulldown integration, while SN74CBT16292DGGR trades Ioff protection for marginally higher ron-neither matches the original's combination of low resistance, power-down safety, and B-port stabilization.
Availability
SN74CBTLV16292DLR is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial PLC backplanes, automated test equipment signal routing, and legacy bus protocol translation requiring stable component supply and long-term obsolescence management.
Supply support for SN74CBTLV16292DLR 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 logic solutions, with over 50 years of innovation in high-speed interface ICs.
The Widebus™ family-including SN74CBTLV16292DLR-is engineered for low-latency, low-distortion data routing in parallel bus architectures, targeting industrial, communications, and test equipment applications demanding nanosecond timing precision.
FAQ
What is the maximum operating temperature range for the SN74CBTLV16292DLR?
The SN74CBTLV16292DLR is rated for operation from −40°C to +85°C ambient temperature. This range is validated per TI's recommended operating conditions and applies to both continuous operation and thermal cycling in industrial environments. The SSOP-56 package's θJA of 56°C/W supports reliable thermal performance within this envelope when mounted per JEDEC MO-194 guidelines.
Does the SN74CBTLV16292DLR support hot-swap or partial-power-down operation?
Yes, the SN74CBTLV16292DLR supports partial-power-down via its Ioff feature: when VCC = 0 V, leakage remains ≤10 µA even with signals present on A or B ports. This prevents damaging back-current flow and ensures isolation-making SN74CBTLV16292DLR suitable for hot-plug backplane and modular system designs.
What is the function of the RINT pin on the SN74CBTLV16292DLR?
The RINT pin on the SN74CBTLV16292DLR is a dedicated reference terminal routed to either B1 or B2 based on the S select input state. When S = L, RINT connects to B2; when S = H, RINT connects to B1. It enables flexible termination, biasing, or reference signal routing without consuming a primary data channel.
Can the SN74CBTLV16292DLR be used with 2.5 V and 3.3 V logic simultaneously?
Yes, the SN74CBTLV16292DLR operates from 2.3 V to 3.6 V and supports rail-to-rail switching-meaning signals from 0 V to VCC pass unattenuated. This allows direct interfacing between 2.5 V ASICs and 3.3 V FPGAs on the same bus, provided VCC is set to the higher domain (e.g., 3.3 V) and input thresholds meet VIH/VIL specs.
Is the SN74CBTLV16292DLR pin-compatible with other Widebus™ muxes like the SN74CBTLV3861?
No, the SN74CBTLV16292DLR is not pin-compatible with SN74CBTLV3861. While both use 56-pin packages, SN74CBTLV16292DLR (SSOP-DL) has unique pin assignments including dedicated RINT and NC placements, whereas SN74CBTLV3861 (VQFN-RGY) features different power/ground distribution and no RINT. PCB redesign is required for substitution.
SN74CBTLV16292DLR 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:
- Multiplexer/Demultiplexer
- Circuit:
- 12 x 1:2
- 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:
- 56-SSOP
SN74CBTLV16292DLR FAQ
1.How can I place an order for SN74CBTLV16292DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBTLV16292DLR 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 SN74CBTLV16292DLR reliable?
The price and inventory of SN74CBTLV16292DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBTLV16292DLR is usually 5 days.
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Once your SN74CBTLV16292DLR 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 SN74CBTLV16292DLR?
For technical support, including SN74CBTLV16292DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBTLV16292DLR requirements.
6.How does Aetrix verify that SN74CBTLV16292DLR is sourced from the original manufacturer or authorized distributors?
All SN74CBTLV16292DLR 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 SN74CBTLV16292DLR meets industry standards.
7.What is the process for return or replacement of SN74CBTLV16292DLR?
All SN74CBTLV16292DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBTLV16292DLR, 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 SN74CBTLV16292DLR part is unused and in its original packaging.
Return procedure for SN74CBTLV16292DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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