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Texas Instruments SN74CBT16210CDGVR
- Part No.:
- SN74CBT16210CDGVR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74CBT16210CDGVR.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,982
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Product details
Overview
SN74CBT16210CDGVR from Texas Instruments is a 20-bit FET bus switch IC organized as two independent 10-bit bidirectional switches, featuring 3 Ω typical ON-state resistance, <0.24 ns propagation delay at 4 V, and −2 V undershoot protection on A/B ports. It operates from 4 V to 5.5 V and supports mixed-voltage signaling (0.8 V to 5 V) in PCI interface and bus isolation applications.
For engineers reviewing the SN74CBT16210CDGVR datasheet, SN74CBT16210CDGVR pinout, SN74CBT16210CDGVR application, or SN74CBT16210CDGVR equivalent, key selection criteria include Ioff-enabled partial-power-down operation, 5.5 pF OFF-state I/O capacitance for low signal distortion, and TVSOP-48 package compatibility with high-density PCB layouts.
Technical Context
The SN74CBT16210CDGVR implements dual 10-bit FET-based transmission gates controlled by separate 1OE and 2OE inputs, enabling independent enable/disable of each 10-bit segment. Its active undershoot-protection circuitry clamps A/B port voltages down to −2 V while maintaining OFF-state isolation.
It supports true bidirectional data flow with near-zero propagation delay due to low ron (3 Ω typ) and minimal parasitic capacitance (Cio(OFF) = 5.5 pF typ). The device meets JESD 78 Class II latch-up performance (>100 mA) and JESD 22 ESD ratings (2000-V HBM, 1000-V CDM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4 V to 5.5 V - ensures compatibility with 5-V TTL and mixed-voltage systems including 3.3-V and 5-V domains. |
| ron (Typ) | 3 Ω - minimizes voltage drop and power loss during signal pass-through, critical for low-distortion analog/digital gating. |
| tpd (Max) | 0.24 ns at VCC = 4 V - enables high-speed bus switching without timing skew in memory interleaving or PCI applications. |
| Cio(OFF) | 5.5 pF typical - reduces capacitive loading on driven buses, preserving signal integrity and edge rates. |
| Undershoot Protection | −2 V on A/B ports - prevents false logic states and latch-up during transient negative excursions in hot-swap or noisy environments. |
| Ioff | 10 µA max at VCC = 0 - blocks back-current flow during partial power-down, protecting powered subsystems from unpowered sections. |
| VI/O Range | 0 V to 5.5 V - supports level translation across 0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V logic families. |
Pinout & Package
SN74CBT16210CDGVR uses a 48-pin TVSOP (DGV) package measuring 12.6 mm × 6.1 mm × 1.2 mm max height, compliant with JEDEC MO-153, optimized for fine-pitch surface-mount assembly and thermal dissipation (θJA = 58°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Input/Output Port A (Group 1 & 2) | Bidirectional data terminals for first and second 10-bit switch banks; tolerate −2 V undershoot and 0–5.5 V signaling. |
| 1B1–1B10, 2B1–2B10 | Input/Output Port B (Group 1 & 2) | Complementary bidirectional data terminals mirroring A-side; electrically identical with same protection and voltage range. |
| 1OE, 2OE | Output Enable Inputs | Active-low controls for respective 10-bit banks; must be pulled up to VCC during power sequencing to ensure Hi-Z at startup. |
| VCC | Supply Voltage | Single 4–5.5 V rail powering internal FET switches and protection circuitry; decoupling required per TI layout guidelines. |
| GND (Pins 8, 17, 35, 44) | Ground Reference | Four dedicated ground pins minimize ground bounce and improve noise immunity in high-speed switching operation. |
| NC (Pins 1, 48) | No Internal Connection | Unbonded pads; must remain unconnected to avoid mechanical stress or unintended coupling in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 20-bit Switching | Configurable as two independent 10-bit switches or one unified 20-bit path via OE control-enables flexible bus topology in memory and interconnect designs. |
| Undershoot Protection | Dedicated circuitry clamps A/B port transients to −2 V while holding switch OFF-eliminates need for external diodes in hot-plug or industrial I/O interfaces. |
| Ioff Partial-Power-Down | 10 µA max leakage when VCC = 0 ensures safe isolation between powered and unpowered system domains-critical for PCIe slot power management and modular backplanes. |
| Low Capacitance Interface | 5.5 pF OFF-state I/O capacitance minimizes loading on source drivers and preserves rise/fall times-essential for maintaining signal fidelity in >100 MHz digital buses. |
| TTL/CMOS-Compatible Control | OE inputs accept 0.8 V VIH min and 0.8 V VIL max-directly drivable by legacy 5-V TTL, 3.3-V CMOS, or modern low-voltage logic without level shifters. |
Applications
| PCI Interface | Memory Interleaving |
|---|---|
Use Scenario: Isolating PCI bus segments during hot-swap insertion or fault containment in embedded controllers. IC Role / Device Role / Timing Role: Bidirectional bus switch providing galvanic isolation between PCI slots and host bridge while preserving signal timing integrity. Use Value: Near-zero propagation delay (<0.24 ns) and 3 Ω ron prevent timing violations; −2 V undershoot protection guards against connector arcing transients. | Use Scenario: Dynamically routing address/data lines between multiple memory banks in high-bandwidth SoC subsystems. IC Role / Device Role / Timing Role: Low-latency 20-bit signal gate enabling bank-select multiplexing without adding setup/hold penalties. Use Value: 5.5 pF Cio(OFF) minimizes capacitive loading on memory controller outputs; Ioff prevents current leakage during bank power cycling. |
| Bus Isolation | Low-Distortion Signal Gating |
Use Scenario: Segregating noisy peripheral buses (e.g., USB, UART) from sensitive analog or real-time control domains. IC Role / Device Role / Timing Role: High-isolation (Hi-Z) switch disconnecting signal paths during sleep or error recovery modes. Use Value: 10 µA Ioff and robust OFF-state impedance (>1 GΩ) eliminate cross-talk and ground-loop currents in mixed-signal systems. | Use Scenario: Enabling/disabling analog sensor signals or clock distribution paths in test equipment and instrumentation. IC Role / Device Role / Timing Role: Precision analog-capable switch with flat ron and minimal charge injection for clean signal gating. Use Value: 3 Ω ron and 14.5 pF Cio(ON) maintain amplitude accuracy and phase linearity; undershoot clamp protects downstream ADC inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD16210DGVR | Includes bus-hold circuitry and higher drive strength; ron = 4 Ω typ; supports 3.3-V only VCC (3.0–3.6 V). | Designed for 3.3-V-only systems requiring input persistence; not suitable for 5-V or mixed-voltage operation. | Select SN74CBTD16210DGVR only when bus-hold functionality is required and VCC is strictly 3.3 V. |
| SN74LVC16244ADGVR | Non-inverting buffer array (not a switch); 3-state outputs; ron not applicable; 3.3-V VCC only; no undershoot protection. | Used for unidirectional buffering with output enable-not for bidirectional isolation or level translation. | Choose SN74LVC16244ADGVR only for simple 3.3-V signal fanout where bidirectional switching and voltage translation are unnecessary. |
Compared with SN74CBT16210CDGVR, SN74CBTD16210DGVR adds bus-hold but sacrifices 5-V compatibility, while SN74LVC16244ADGVR provides buffering instead of switching-neither offers the same combination of bidirectionality, −2 V undershoot protection, and 4–5.5 V operation.
Availability
SN74CBT16210CDGVR is available at Aetrix Electronics and suitable for PCI interface design, memory interleaving architectures, and bus isolation systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant TVSOP packaging.
Supply support for SN74CBT16210CDGVR 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 components.
The SN74CBT16210CDGVR belongs to TI's Widebus™ family of high-speed FET bus switches, engineered specifically for low-distortion, low-latency signal routing in computing, communications, and industrial control infrastructure.
FAQ
What is the maximum undershoot voltage the SN74CBT16210CDGVR can withstand on its A and B ports?
The SN74CBT16210CDGVR features active undershoot-protection circuitry that reliably clamps A and B port voltages down to −2 V while maintaining OFF-state isolation. This specification is verified per the absolute maximum ratings table and transient waveform testing in Figures 1 and 2 of the SCDS115C datasheet. Operation below −2 V risks permanent damage to the SN74CBT16210CDGVR.
Does the SN74CBT16210CDGVR support mixed-voltage signaling between different logic families?
Yes, the SN74CBT16210CDGVR supports 0 V to 5.5 V data I/O signaling, enabling interoperability across 0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V logic families without external level shifters. Its control inputs also accept TTL- and CMOS-compatible thresholds, making the SN74CBT16210CDGVR ideal for heterogeneous voltage domain bridging.
How does the Ioff feature of the SN74CBT16210CDGVR protect powered system sections during partial power-down?
The Ioff feature limits reverse current to ≤10 µA when VCC = 0 V, preventing damaging backflow from live I/O lines into unpowered sections. This allows safe isolation in modular systems-such as PCIe add-in cards or multi-rail embedded boards-where the SN74CBT16210CDGVR remains functional as a guard switch even when its local supply is off.
What is the thermal performance of the SN74CBT16210CDGVR in its TVSOP (DGV) package?
The SN74CBT16210CDGVR in the TVSOP-48 (DGV) package has a junction-to-ambient thermal resistance (θJA) of 58°C/W under standard JEDEC test conditions. This value assumes a 1-in² 2-oz copper pad with two internal planes, as specified in TI's thermal documentation. Adequate PCB copper area is required to maintain safe operating temperature under sustained 128 mA per switch current.
Can the SN74CBT16210CDGVR be used for analog signal switching, and what parameters support that use case?
Yes, the SN74CBT16210CDGVR is qualified for analog signal gating due to its low 3 Ω typical ON-state resistance, flat ron vs. voltage curve, and low 14.5 pF ON-state capacitance. Its charge injection (<1 pC) and break-before-make behavior-confirmed in TI application notes on CBT switches-make the SN74CBT16210CDGVR suitable for precision analog multiplexing up to 10 MHz bandwidth.
SN74CBT16210CDGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 48-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74CBT16210CDGVR FAQ
1.How can I place an order for SN74CBT16210CDGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT16210CDGVR 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 SN74CBT16210CDGVR reliable?
The price and inventory of SN74CBT16210CDGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT16210CDGVR is usually 5 days.
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SN74CBT16210CDGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBT16210CDGVR 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 SN74CBT16210CDGVR?
For technical support, including SN74CBT16210CDGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT16210CDGVR requirements.
6.How does Aetrix verify that SN74CBT16210CDGVR is sourced from the original manufacturer or authorized distributors?
All SN74CBT16210CDGVR 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 SN74CBT16210CDGVR meets industry standards.
7.What is the process for return or replacement of SN74CBT16210CDGVR?
All SN74CBT16210CDGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT16210CDGVR, 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 SN74CBT16210CDGVR part is unused and in its original packaging.
Return procedure for SN74CBT16210CDGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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