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Texas Instruments SN74CBT16210DGVR
- Part No.:
- SN74CBT16210DGVR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74CBT16210DGVR.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:587
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Product details
Overview
SN74CBT16210DGVR from Texas Instruments is a 20-bit FET bus switch in TVSOP-48 package, featuring 5 Ω typical on-state resistance, TTL-compatible control inputs (VIH = 2 V, VIL = 0.8 V), and dual 10-bit independent switching with separate OE pins. It enables high-speed bidirectional signal routing in memory expansion, data multiplexing, and hot-swap I/O isolation applications.
For engineers reviewing the SN74CBT16210DGVR datasheet, SN74CBT16210DGVR pinout, SN74CBT16210DGVR application, or SN74CBT16210DGVR equivalent, key selection considerations include its 0.25 ns propagation delay at 5 V, ±128 mA continuous channel current rating, thermal impedance of 58°C/W, and compatibility with 4–5.5 V supply operation across –40°C to 85°C ambient.
Technical Context
The SN74CBT16210DGVR implements two independent 10-bit FET-based analog switches controlled by dedicated OE inputs. Each switch connects port A to port B when OE is low (active-low), presenting <5 Ω on-resistance and <5.5 pF off-capacitance for minimal signal degradation.
It operates as a passive bidirectional switch - no internal level-shifting or buffering - with rail-to-rail voltage handling (–0.5 V to 7 V) and TTL-compatible logic thresholds. Its architecture avoids latch-up risk and supports hot-insertion due to break-before-make behavior during enable transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5 Ω typical at VCC = 4.5 V, enabling low insertion loss for high-speed digital signals up to 100+ MHz |
| Propagation delay (tpd) | 0.25 ns at VCC = 5 V, CL = 50 pF - supports sub-nanosecond timing-critical interconnects |
| Supply voltage range | 4 V to 5.5 V - compatible with standard 5 V TTL and mixed-voltage 4.5–5.5 V systems |
| Input voltage range (VI) | –0.5 V to 7 V - allows overvoltage-tolerant interfacing without external clamping |
| Channel current rating | ±128 mA continuous - sufficient for driving multiple CMOS loads or short PCB traces |
| Off-state capacitance (Cio) | 5.5 pF - minimizes crosstalk and loading on adjacent high-frequency lines |
| Operating temperature | –40°C to +85°C - qualified for industrial-grade embedded and communications equipment |
Pinout & Package
SN74CBT16210DGVR is housed in a 48-pin TVSOP (DGV) package measuring 12.6 mm × 6.1 mm × 1.2 mm max height, with 0.4 mm pitch, gull-wing leads, and pin 1 located in quadrant Q1 per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Port A input/output terminals (Group 1 & 2) | Bidirectional signal paths for first and second 10-bit buses; electrically identical to corresponding B pins |
| 1B1–1B10, 2B1–2B10 | Port B input/output terminals (Group 1 & 2) | Paired with respective A pins; connection established only when associated OE is low |
| 1OE, 2OE | Active-low output-enable controls | Independent gating of each 10-bit switch group; OE high forces high-impedance isolation |
| VCC | Positive supply | Single 4–5.5 V rail powers all 20 switches; no separate logic or analog supply required |
| GND (Pins 8, 17, 35, 44) | Ground reference | Four dedicated ground pins minimize ground bounce and improve noise immunity across wide bus |
| NC (Pins 1, 48) | No internal connection | Unbonded pads - must remain unconnected; no routing or stitching required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low on-resistance | 5 Ω typical ensures <0.1 V drop at 20 mA, preserving signal integrity in 5 V logic domains |
| Sub-nanosecond propagation delay | 0.25 ns at 5 V enables use in >1 GHz data path timing budgets without added skew |
| Dual independent 10-bit control | Separate 1OE/2OE pins allow asynchronous enable/disable of bus segments for dynamic reconfiguration |
| TTL-compatible input thresholds | VIH = 2 V / VIL = 0.8 V guarantees reliable interfacing with legacy 5 V microcontrollers and FPGAs |
| High off-isolation | 5.5 pF Cio(OFF) and >10⁹ Ω off-resistance suppress coupling between inactive bus sections |
Applications
| Memory Expansion Interface | Data Multiplexing |
|---|---|
Use Scenario: Expanding address/data bus width between MCU and external SRAM or Flash memory banks. IC Role / Device Role / Timing Role: Bidirectional 20-bit bus switch isolating memory banks during access arbitration or power gating. Use Value: Enables zero-wait-state memory access with <0.25 ns added delay and no level translation overhead. |
Use Scenario: Sharing a single ADC or DAC interface among multiple processors or FPGA peripherals. IC Role / Device Role / Timing Role: Time-multiplexed signal routing via independent OE control to prevent bus contention. Use Value: Eliminates need for tri-state buffers or complex arbitration logic while maintaining signal fidelity. |
| Hot-Swap I/O Isolation | Legacy Bus Bridging |
Use Scenario: Safely inserting/removing peripheral cards in industrial backplane systems without disrupting main CPU bus. IC Role / Device Role / Timing Role: Physical layer isolation gate that breaks bus continuity before card insertion/removal. Use Value: Prevents supply rail droop and signal glitches during live insertion; supports IEEE 1101.10 compliance. |
Use Scenario: Interfacing modern 5 V FPGA I/O banks with legacy ISA or PCI-X 3.3 V/5 V peripheral slots. IC Role / Device Role / Timing Role: Passive voltage-domain agnostic switch enabling protocol-transparent bridging. Use Value: Avoids active level shifters that add jitter or limit bandwidth; preserves original timing margins. |
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; 6.5 Ω ron; 3-state outputs when disabled | Preferred where input floating is possible and stronger drive is needed for long traces | Select SN74CBTD16210DGVR if bus-hold functionality is required to prevent undefined states on unconnected lines |
| SN74LVC16244ADGVR | Non-inverting buffer array (not a switch); 3-state outputs; 4.5 mA drive; 3.3 V only | Suitable for unidirectional buffering with level shifting, not bidirectional switching | Choose SN74LVC16244ADGVR only for 3.3 V-only systems requiring direction-controlled buffering, not passive switching |
Compared with SN74CBT16210DGVR, SN74CBTD16210DGVR adds bus-hold but increases on-resistance and power consumption, while SN74LVC16244ADGVR provides direction control and level shifting but lacks true bidirectional transparency and 5 V tolerance.
Availability
SN74CBT16210DGVR is available at Aetrix Electronics and suitable for memory expansion, hot-swap I/O isolation, data multiplexing, and legacy bus bridging requiring stable component supply and industrial temperature support.
Supply support for SN74CBT16210DGVR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, scalability, and broad application coverage.
The SN74CBT16210DGVR belongs to TI's Widebus™ family of high-speed bus switches, engineered specifically for low-latency, bidirectional signal routing in industrial, communications, and computing infrastructure where timing predictability and signal integrity are critical.
FAQ
What is the maximum operating voltage for SN74CBT16210DGVR?
The SN74CBT16210DGVR supports a supply voltage range of 4 V to 5.5 V under recommended conditions. Its absolute maximum ratings allow VCC up to 7 V and input voltages from –0.5 V to 7 V, enabling robust interfacing with overvoltage-tolerant systems. Operation outside 4–5.5 V may affect timing or reliability and is not guaranteed per datasheet specifications.
Does SN74CBT16210DGVR support bidirectional signal flow?
Yes, SN74CBT16210DGVR is a fully bidirectional FET bus switch - signals pass equally well from port A to port B or port B to port A when the corresponding OE is low. There is no internal directionality or buffering; it functions as a passive analog path with symmetrical on-resistance and capacitance characteristics.
Can SN74CBT16210DGVR be used in 3.3 V systems?
No - SN74CBT16210DGVR is not specified for 3.3 V operation. Its recommended VCC minimum is 4 V, and TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) assume a 5 V reference. Using it with 3.3 V supplies risks unreliable switching behavior and violates recommended operating conditions per the datasheet.
What is the thermal performance of SN74CBT16210DGVR in its TVSOP package?
The SN74CBT16210DGVR in TVSOP (DGV) package has a junction-to-ambient thermal impedance (θJA) of 58°C/W under standard JEDEC test conditions. This value assumes a 1-inch² 2-oz copper pad with two internal layers; actual board layout significantly impacts real-world thermal performance, especially under sustained 128 mA channel current.
How does the enable logic work on SN74CBT16210DGVR?
SN74CBT16210DGVR uses active-low enable inputs: 1OE and 2OE independently control the first and second 10-bit switch groups. When an OE pin is driven low, its associated A–B ports are connected with ~5 Ω resistance; when high, the path is open and presents high-impedance isolation (>10⁹ Ω). Unused OE inputs must be tied to VCC or GND to prevent floating.
SN74CBT16210DGVR 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
SN74CBT16210DGVR FAQ
1.How can I place an order for SN74CBT16210DGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT16210DGVR 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 SN74CBT16210DGVR reliable?
The price and inventory of SN74CBT16210DGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT16210DGVR is usually 5 days.
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Once your SN74CBT16210DGVR 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 SN74CBT16210DGVR?
For technical support, including SN74CBT16210DGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT16210DGVR requirements.
6.How does Aetrix verify that SN74CBT16210DGVR is sourced from the original manufacturer or authorized distributors?
All SN74CBT16210DGVR 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 SN74CBT16210DGVR meets industry standards.
7.What is the process for return or replacement of SN74CBT16210DGVR?
All SN74CBT16210DGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT16210DGVR, 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 SN74CBT16210DGVR part is unused and in its original packaging.
Return procedure for SN74CBT16210DGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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