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Texas Instruments SN74CBTLV16800DL
- Part No.:
- SN74CBTLV16800DL
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74CBTLV16800DL.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,383
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Product details
Overview
SN74CBTLV16800DL from Texas Instruments is a low-voltage 20-bit FET bus switch with precharged B-port outputs, designed for high-speed signal routing in live-insertion systems. It features dual 10-bit independent switches, 5-Ω typical on-state resistance, rail-to-rail switching, and Ioff support for partial-power-down operation. Used in hot-swap backplane interfaces and modular computing systems requiring minimal propagation delay and signal integrity during insertion.
For engineers reviewing the SN74CBTLV16800DL datasheet, SN74CBTLV16800DL pinout, SN74CBTLV16800DL application, or SN74CBTLV16800DL equivalent, this page delivers verified electrical specs, package mapping to SSOP-48 (DL), functional behavior under bias voltage control, and real-world selection guidance for bus isolation and live-insertion noise suppression.
Technical Context
The SN74CBTLV16800DL implements two independent 10-bit FET-based transmission gates, each controlled by its own OE input. Its internal architecture uses low-threshold MOSFETs to achieve 5 Ω typical ron, enabling sub-0.25 ns propagation delay at 3.3 V. The B-port outputs are actively precharged to a user-supplied BIASV voltage via integrated 10-kΩ-equivalent resistors.
This device operates across 2.3 V to 3.6 V VCC, supports BIASV from 1.3 V to VCC, and guarantees Ioff ≤ 10 µA when VCC = 0 V - ensuring no backflow current during power sequencing. It meets JESD 78 Class II latch-up immunity (>100 mA) and exceeds JESD 22 ESD ratings (2000-V HBM, 200-V MM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - Enables compatibility with 2.5 V and 3.3 V logic domains without level translation. |
| ron (Typ) | 5 Ω at VCC = 3 V - Minimizes voltage drop and timing skew across 20-bit parallel data paths. |
| tpd | 0.15–0.25 ns - Ensures sub-nanosecond signal pass-through for high-frequency bus applications. |
| Ioff | ≤10 µA at VCC = 0 V - Prevents damaging current flow during partial power-down or hot-plug events. |
| BIASV Range | 1.3 V to VCC - Allows precise precharge voltage selection to match system reference levels and suppress live-insertion transients. |
| Cio(OFF) | 6.5 pF - Reduces capacitive loading on disabled ports, preserving signal integrity on adjacent traces. |
| ESD Rating | 2000-V HBM, 200-V MM - Supports robust handling and board-level reliability in industrial environments. |
Pinout & Package
SN74CBTLV16800DL is housed in a 48-pin SSOP (Shrink Small-Outline Package) with 0.5 mm pitch, JEDEC MO-153 compliant, body dimensions 12.5 mm × 7.5 mm × 1.75 mm max height. Pin 1 located at top-left corner (Q1 quadrant), marked with dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | A-side data inputs/outputs | First and second 10-bit input ports; bidirectional, rail-to-rail compatible with VCC domain. |
| 1B1–1B10, 2B1–2B10 | B-side data inputs/outputs | Corresponding output ports precharged to BIASV when OE is high; minimize floating noise during insertion. |
| 1OE, 2OE | Output-enable controls | Active-low enables for respective 10-bit sections; tie to VCC via pullup for safe power-up high-Z state. |
| BIASV | Bias voltage supply | User-supplied reference (1.3 V to VCC) setting precharge level for all B-port outputs. |
| VCC, GND | Power and ground | Single 2.3–3.6 V supply; multiple GND pins (pins 7, 17, 25, 35, 47) reduce ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports full VCC swing on both A and B ports - preserves signal amplitude without clamping or distortion. |
| Precharged B-port outputs | Internal 10-kΩ-equivalent pullup to BIASV eliminates floating states and reduces transient noise during live insertion. |
| Ioff protection | Blocks current flow when VCC = 0 V - enables safe partial power-down in modular systems with mixed supply domains. |
| Low on-state resistance | 5 Ω typical ron minimizes RC delay and ensures <0.25 ns tpd - critical for >500 MHz bus timing margins. |
| High ESD/latch-up immunity | 2000-V HBM and >100 mA latch-up rating - meets industrial reliability requirements without external protection. |
Applications
| Modular Backplane Interconnect | Hot-Swappable Server Blade |
|---|---|
|
Use Scenario: Inserting/removing line cards into powered backplanes without disrupting active data lanes. IC Role / Device Role / Timing Role: Bidirectional 20-bit bus switch isolating A-port (backplane) from B-port (blade), with B-port precharged to BIASV before insertion. Use Value: Eliminates glitch-induced resets by suppressing B-port floating transients; enables zero-downtime maintenance. |
Use Scenario: Adding or replacing compute modules in rack-mounted servers while main power remains active. IC Role / Device Role / Timing Role: Dual 10-bit switch sectioning PCIe or memory bus segments, with independent OE control per module slot. Use Value: Prevents backfeeding into unpowered modules via Ioff; maintains signal integrity during mechanical mating. |
| Industrial PLC I/O Carrier | Test Equipment Signal Routing |
|
Use Scenario: Hot-plugging sensor/actuator I/O modules into programmable logic controller chassis. IC Role / Device Role / Timing Role: Isolating field-side (B-port) signals from controller-side (A-port) buses using BIASV-matched precharge. Use Value: Avoids false triggers caused by floating B-port lines; supports SIL2-compliant fail-safe design. |
Use Scenario: Reconfiguring signal paths between DUT and instrumentation in automated test systems. IC Role / Device Role / Timing Role: Low-ron, low-capacitance 20-bit switch enabling nanosecond-accurate path selection without added jitter. Use Value: Preserves edge fidelity for high-speed digital pattern generation and acquisition up to 1 GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit FET bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3861DGGR | 24-bit, single OE, no BIASV pin - uses internal VCC-referenced precharge instead of user-selectable bias. | Lacks independent dual-OE control and adjustable BIASV; suitable only for uniform-voltage systems. | Choose when board space is constrained and BIASV flexibility is unnecessary; not drop-in due to pinout and control differences. |
| PI74CBTLV3245AEX | 8-bit, dual-supply (VCCA/VCCB), no precharge - supports level translation but no live-insertion noise suppression. | Requires external termination for floating outputs; unsuitable for hot-swap without added circuitry. | Select for mixed-voltage interconnects where level shifting outweighs live-insertion needs; not functionally equivalent to SN74CBTLV16800DL. |
Compared with SN74CBTLV3861DGGR and PI74CBTLV3245AEX, the SN74CBTLV16800DL uniquely combines dual independent OE control, user-adjustable BIASV, and guaranteed Ioff - making it the only option validated for robust live-insertion in modular industrial and telecom infrastructure.
Availability
SN74CBTLV16800DL is available at Aetrix Electronics and suitable for modular backplane interconnect, hot-swappable server blade, and industrial PLC I/O carrier applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SN74CBTLV16800DL 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 90 years of innovation in industrial, automotive, and communications markets.
The SN74CBTLV16800DL belongs to TI's Widebus™ family of high-speed logic devices, engineered specifically for low-latency, low-distortion signal routing in live-insertion and hot-swap architectures.
FAQ
What is the maximum operating temperature range for the SN74CBTLV16800DL?
The SN74CBTLV16800DL is fully specified for operation from –40°C to +85°C ambient temperature. This range is validated across all electrical parameters including ron, tpd, Ioff, and BIASV functionality. Thermal impedance for the DL package is 63°C/W, supporting reliable performance in enclosed industrial enclosures without forced airflow.
Can the SN74CBTLV16800DL be used with a 2.5 V supply?
Yes, the SN74CBTLV16800DL supports VCC from 2.3 V to 3.6 V, making 2.5 V fully compliant. At 2.5 V, typical ron is 5–9 Ω and tpd remains ≤0.25 ns. BIASV must be set between 1.3 V and 2.5 V - commonly 1.8 V or 2.5 V to match downstream receiver thresholds.
How does the BIASV pin function in the SN74CBTLV16800DL?
The BIASV pin supplies the reference voltage to which all B-port outputs (1B1–1B10 and 2B1–2B10) are precharged when their respective OE is high. Internally, each B-port pin connects through ~10 kΩ to BIASV, eliminating floating states and reducing live-insertion noise. BIASV must be within 1.3 V to VCC and sourced with ≤1 mA capability.
Is the SN74CBTLV16800DL pin-compatible with other Widebus™ 20-bit switches?
No - the SN74CBTLV16800DL has a unique 48-pin SSOP (DL) pinout optimized for dual 10-bit operation with separate OE and BIASV. It is not pin-compatible with SN74CBTLV3861 (24-pin TSSOP) or SN74CBT16210 (56-pin SSOP). Layout reuse requires explicit verification against the DL package drawing MPDS006C.
Does the SN74CBTLV16800DL support partial-power-down mode?
Yes, the SN74CBTLV16800DL fully supports partial-power-down via its Ioff feature. When VCC = 0 V, leakage current is limited to ≤10 µA even if A- or B-port signals remain at up to 3.6 V - preventing backflow damage and enabling safe operation in mixed-power-domain systems.
SN74CBTLV16800DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBTLV
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 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:
- 48-SSOP
SN74CBTLV16800DL FAQ
1.How can I place an order for SN74CBTLV16800DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBTLV16800DL 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 SN74CBTLV16800DL reliable?
The price and inventory of SN74CBTLV16800DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBTLV16800DL is usually 5 days.
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SN74CBTLV16800DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBTLV16800DL 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 SN74CBTLV16800DL?
For technical support, including SN74CBTLV16800DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBTLV16800DL requirements.
6.How does Aetrix verify that SN74CBTLV16800DL is sourced from the original manufacturer or authorized distributors?
All SN74CBTLV16800DL 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 SN74CBTLV16800DL meets industry standards.
7.What is the process for return or replacement of SN74CBTLV16800DL?
All SN74CBTLV16800DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBTLV16800DL, 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 SN74CBTLV16800DL part is unused and in its original packaging.
Return procedure for SN74CBTLV16800DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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