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Texas Instruments SN74CBTLV16210DL
- Part No.:
- SN74CBTLV16210DL
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74CBTLV16210DL.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,619
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Product details
Overview
SN74CBTLV16210DL from Texas Instruments is a 20-bit, low-voltage, high-speed bus switch IC with dual 10-bit configurable switching, 5-Ω typical on-state resistance (ron), rail-to-rail signal handling (0 V to VCC), and Ioff 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 high-fidelity data path isolation in memory expansion and FPGA interconnect applications.
For engineers reviewing the SN74CBTLV16210DL datasheet, SN74CBTLV16210DL pinout, SN74CBTLV16210DL application, or SN74CBTLV16210DL equivalent, key selection criteria include its dual-OE control architecture, 48-pin SSOP (DL) package, guaranteed 10 µA max ICC at 3.6 V, and compatibility with LVTTL/CMOS logic levels across industrial temperature range (−40°C to 85°C).
Technical Context
The SN74CBTLV16210DL implements two independent 10-bit FET-based analog switches, each controlled by a dedicated OE input-enabling flexible partitioning as either two 10-bit buses or one unified 20-bit path. Its transmission-gate topology supports bidirectional, noninverting signal flow with no internal level shifting.
It features Ioff circuitry that actively blocks current backflow when VCC = 0 V, ensuring system-level isolation during hot-insertion or partial power-down sequences. The device maintains high-impedance state on all I/Os when OE is high or during power transitions, provided OE is pulled up to VCC via external resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 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 (ron) | 5 Ω typ - Minimizes voltage drop and signal distortion for high-speed digital signals up to 500 Mbps. |
| Propagation Delay (tpd) | 0.15 ns typ at 2.5 V - Supports sub-GHz timing-critical paths in DDR memory buffers and FPGA I/O expansion. |
| Ioff Current | 10 µA max at VCC = 0 V - Prevents damaging back-current during partial power-down, critical for hot-swap systems. |
| Input Capacitance (Ci) | 4.5 pF - Reduces loading on driving sources, preserving signal integrity in dense parallel bus layouts. |
| Off-State Capacitance (Cio) | 6.5 pF - Limits crosstalk between enabled and disabled channels in multi-bus architectures. |
| Operating Temperature | −40°C to 85°C - Qualified for industrial-grade embedded control, test equipment, and telecom infrastructure. |
Pinout & Package
SN74CBTLV16210DL uses a 48-pin SSOP (DL) package measuring 12.6 mm × 6.2 mm × 2.4 mm (max height), JEDEC MO-153 compliant, with 0.5 mm pitch and gull-wing leads. Pin 1 located at top-left corner (Q1 quadrant), marked "CBTLV16210".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Port A inputs/outputs (first/second 10-bit bus) | Bidirectional data terminals for first or second 10-bit channel; electrically identical to corresponding B-side pins. |
| 1B1–1B10, 2B1–2B10 | Port B inputs/outputs (first/second 10-bit bus) | Paired with respective A-side pins; switch closure connects A↔B with <5 Ω resistance and no polarity inversion. |
| 1OE, 2OE | Output-enable controls (active-low) | Independent enable for each 10-bit section; low = conductive path, high = high-Z isolation between ports. |
| VCC | Power supply | Single 2.3–3.6 V rail powers both switch sections and control logic; no separate analog/digital supplies required. |
| GND (Pins 8, 16, 35, 47) | Ground reference | Four dedicated ground pins minimize ground bounce and improve noise immunity in high-speed switching. |
| NC (Pins 1, 48) | No internal connection | Unbonded pads; must remain unconnected to avoid mechanical stress or unintended coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports 0 V to VCC signal swing without clipping-enables transparent pass-through of LVCMOS, LVTTL, and mixed-voltage logic. |
| Dual independent OE control | Allows dynamic reconfiguration: e.g., isolate CPU address bus while enabling data bus, or split 20-bit path into two independent 10-bit lanes. |
| Ioff partial-power-down protection | Guarantees <10 µA leakage when VCC = 0 V-prevents back-driving powered subsystems during board-level power sequencing. |
| Low 5-Ω on-resistance | Reduces insertion loss and timing skew across parallel traces, maintaining signal fidelity in 20-bit wide synchronous interfaces. |
| Sub-1 ns propagation delay | Enables use in >500 MHz clock domains without added timing budget overhead-critical for high-speed memory and FPGA I/O bridging. |
Applications
| Memory Expansion Interface | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Expanding DRAM address/data bus width between microcontroller and external SDRAM using shared PCB traces. IC Role / Device Role / Timing Role: Bidirectional 20-bit bus switch isolating controller from memory during refresh cycles or power gating. Use Value: Eliminates need for discrete transceivers or level shifters; 5-Ω ron ensures <0.1 ns skew across all 20 lines, preserving setup/hold timing margins. |
Use Scenario: Routing configurable I/O banks from Xilinx Artix-7 FPGA to multiple peripheral modules (ADC, DAC, sensor hub) on same PCB layer. IC Role / Device Role / Timing Role: Signal routing switch enabling dynamic reassignment of FPGA pins without hardware redesign. Use Value: Dual-OE control allows real-time switching between two peripheral sets; rail-to-rail operation preserves full logic swing across 3.3 V and 2.5 V peripherals. |
| Hot-Swappable Module Backplane | Industrial PLC I/O Multiplexing |
|
Use Scenario: Isolating add-in PCIe or CompactPCI modules during live insertion/removal in rack-mounted test equipment. IC Role / Device Role / Timing Role: Power-aware bus gate preventing backfeed from powered backplane into unpowered module during insertion. Use Value: Ioff specification guarantees <10 µA leakage at VCC = 0 V-meets PICMG 2.0 hot-swap safety requirements without auxiliary circuitry. |
Use Scenario: Sharing limited microcontroller GPIOs among multiple fieldbus interfaces (RS-485, CAN, Modbus) in programmable logic controller base units. IC Role / Device Role / Timing Role: Low-latency multiplexer enabling time-division access to serial PHYs without software overhead. Use Value: 0.15 ns tpd ensures negligible delay in deterministic real-time communication stacks; SSOP package fits tight industrial PCB spacing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16210DL | Higher VCC range (4.5–5.5 V); 7 Ω ron; no Ioff support; TTL-compatible inputs only. | Requires 5 V supply; unsuitable for partial-power-down or mixed-voltage 2.5/3.3 V systems. | Select only if legacy 5 V design mandates TTL-level compatibility and Ioff is not required. |
| SN74LVC16245ADGGR | 3.3 V-only (1.65–3.6 V); direction-controlled transceiver (not bidirectional switch); 24 mA drive strength. | Unidirectional data flow; requires direction pin management; adds propagation delay (~4 ns) and power consumption (~20 mA ICC). | Choose when level-shifting with direction control is needed; not a functional replacement for passive, bidirectional switching. |
Compared with SN74CBTLV16210DL, SN74CBT16210DL lacks Ioff and operates only at 5 V, limiting modern low-voltage designs; SN74LVC16245ADGGR introduces direction logic overhead and higher latency, making it unsuitable for transparent, zero-delay bus isolation tasks.
Availability
SN74CBTLV16210DL is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O routing, hot-swappable backplanes, and industrial PLC multiplexing requiring stable component supply across extended product lifecycles.
Supply support for SN74CBTLV16210DL 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 90 years of innovation in high-reliability industrial and automotive components.
The SN74CBTLV16210DL belongs to TI's Widebus™ family of high-speed logic devices, engineered specifically for low-latency, low-distortion signal routing in memory subsystems and FPGA-adjacent interconnects.
FAQ
What is the maximum operating frequency supported by the SN74CBTLV16210DL?
The SN74CBTLV16210DL does not specify a maximum clock frequency because it functions as an analog bus switch-not a clocked logic device. Its performance is characterized by propagation delay (0.15 ns typ) and bandwidth, supporting data rates exceeding 500 Mbps in well-terminated parallel buses. Signal integrity depends on PCB layout, load capacitance, and driver strength-not internal clocking.
Can the SN74CBTLV16210DL be used with 1.8 V logic signals?
No-the SN74CBTLV16210DL requires VCC between 2.3 V and 3.6 V and is not rated for 1.8 V operation. Applying 1.8 V to VCC violates recommended operating conditions and may cause unreliable switching or excessive ICC. For 1.8 V systems, consider TI's SN74AVC16T245 or compatible AVC-series level translators instead of the SN74CBTLV16210DL.
How should unused OE pins be handled on the SN74CBTLV16210DL?
Unused OE pins on the SN74CBTLV16210DL must be tied to VCC through a pullup resistor (minimum value determined by driver sink capability) to ensure the associated 10-bit switch remains in high-impedance state during power-up, power-down, or floating conditions. Leaving OE unconnected risks undefined output states and potential bus contention.
Does the SN74CBTLV16210DL support hot-plug operation?
Yes-the SN74CBTLV16210DL supports hot-plug operation via its Ioff feature, which limits current to ≤10 µA when VCC = 0 V. This prevents back-current from powered backplanes into unpowered modules. However, external circuitry (e.g., current-limiting resistors, TVS diodes) is still required to meet full hot-swap compliance standards like PCI Express or CompactPCI.
Is the SN74CBTLV16210DL pin-compatible with other Widebus™ 20-bit switches?
Yes-the SN74CBTLV16210DL shares identical 48-pin SSOP (DL) pinout and functional mapping with SN74CBTLV16210DLR and SN74CBTLV16210GR (TSSOP), differing only in packaging and reel quantity. All variants use the same CBTLV16210 top-side marking and support identical electrical behavior under matching VCC and temperature conditions.
SN74CBTLV16210DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBTLV
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
SN74CBTLV16210DL FAQ
1.How can I place an order for SN74CBTLV16210DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBTLV16210DL 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 SN74CBTLV16210DL reliable?
The price and inventory of SN74CBTLV16210DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBTLV16210DL is usually 5 days.
3.What payment methods are accepted for SN74CBTLV16210DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74CBTLV16210DL transactions.
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4.How is shipping managed for SN74CBTLV16210DL?
SN74CBTLV16210DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBTLV16210DL 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 SN74CBTLV16210DL?
For technical support, including SN74CBTLV16210DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBTLV16210DL requirements.
6.How does Aetrix verify that SN74CBTLV16210DL is sourced from the original manufacturer or authorized distributors?
All SN74CBTLV16210DL 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 SN74CBTLV16210DL meets industry standards.
7.What is the process for return or replacement of SN74CBTLV16210DL?
All SN74CBTLV16210DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBTLV16210DL, 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 SN74CBTLV16210DL part is unused and in its original packaging.
Return procedure for SN74CBTLV16210DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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