My Inquiry
My Account
Texas Instruments SN74CBT6800ADGVR
- Part No.:
- SN74CBT6800ADGVR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74CBT6800ADGVR.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 24TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74CBT6800ADGVR from Texas Instruments is a 10-bit FET bus switch with precharged outputs, designed for high-speed TTL-compatible bidirectional signal routing in hot-swap and live-insertion systems. It features 5-Ω on-state resistance, 0.25 ns typical propagation delay at 5 V, and user-selectable BIASV bias voltage to minimize noise during live insertion. Used in backplane interconnects and modular I/O subsystems.
For engineers reviewing the SN74CBT6800ADGVR datasheet, SN74CBT6800ADGVR pinout, SN74CBT6800ADGVR application, or SN74CBT6800ADGVR equivalent, key selection criteria include on-resistance matching, BIASV configurability, TSSOP-24 thermal performance (θJA = 86°C/W), live-insertion noise suppression capability, and compatibility with 4–5.5 V supply rails.
Technical Context
The SN74CBT6800ADGVR implements a single 10-bit FET-based analog switch array with TTL-compatible control logic and integrated precharge circuitry tied to the B port. Its architecture uses low-threshold transmission gates enabling near-zero propagation delay and bidirectional signal flow without direction control.
When enabled (ON = low), A1–A10 connect directly to B1–B10 via sub-7 Ω channels; when disabled (ON = high), the B port is actively pulled to BIASV through an internal ~10-kΩ equivalent resistor, suppressing floating-node transients. BIASV is externally supplied between 1.3 V and VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 3–7 Ω max - ensures minimal voltage drop and signal attenuation across switched paths at ≤64 mA per channel |
| Propagation delay (tpd) | 0.25 ns typ at VCC = 5 V - supports >1 GHz signal integrity in high-speed digital interconnects |
| BIASV range | 1.3 V to VCC - enables precise precharge level selection to match system reference voltages and reduce ground bounce |
| Supply voltage (VCC) | 4 V to 5.5 V - compatible with standard 5-V TTL and mixed-voltage 3.3/5-V interface domains |
| Input leakage (II) | ±5 µA max - guarantees low power consumption and stable control logic under static conditions |
| Off-state capacitance (Co(OFF)) | 4.5 pF max - minimizes capacitive loading and crosstalk when switch is disabled |
| Thermal resistance (θJA) | 86°C/W - defines maximum power dissipation limit (≈140 mW) in standard PCB layouts with TSSOP-24 footprint |
Pinout & Package
SN74CBT6800ADGVR is housed in a 24-pin TVSOP (DGV) package - ultra-thin, lead-free, RoHS-compliant, with 0.65 mm pitch and 1.2 mm max height. Designed for space-constrained board layouts requiring fine-pitch surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ON (Pin 1) | Enable control input | Active-low global switch control; drives all 10 channels simultaneously |
| A1–A10 (Pins 2–11) | Port A data inputs/outputs | Bidirectional signal terminals connected to upstream logic or controller side |
| GND (Pin 12) | Power ground | Reference return path for VCC, BIASV, and signal currents |
| VCC (Pin 13) | Supply voltage | Primary power rail (4–5.5 V); powers internal FET drivers and bias circuitry |
| B1–B10 (Pins 14–23) | Port B data inputs/outputs | Bidirectional terminals connected to hot-swappable module or peripheral side |
| BIASV (Pin 24) | Bias voltage input | User-supplied precharge reference (1.3 V to VCC) that sets idle state of B-port nodes |
Key Features
| Feature | Design Value |
|---|---|
| Precharged B-port outputs | Reduces live-insertion noise by holding B1–B10 at stable BIASV instead of floating, eliminating transient coupling into adjacent traces |
| TTL-compatible control inputs | VIH = 2 V min / VIL = 0.8 V max allows direct interfacing with legacy 5-V microcontrollers and FPGAs without level shifters |
| Low on-resistance (3–7 Ω) | Maintains signal integrity for high-frequency data (e.g., parallel bus, address/data lines) with <10 mV drop at 30 mA per channel |
| Bidirectional signal routing | No direction pin required - signals pass transparently from A↔B, simplifying PCB layout and firmware control |
| Hot-swap optimized architecture | Combines fast enable/disable timing (tPLZ/tPHZ < 6 ns) with BIASV precharge to meet IEEE 1101.10 live-insertion requirements |
Applications
| Modular Backplane Interconnect | Hot-Swappable I/O Card |
|---|---|
Use Scenario: Connecting fixed motherboard logic to removable peripheral cards in telecom or industrial chassis systems. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating A-side (motherboard) from B-side (card) while enabling live insertion without disrupting active data flow. Use Value: Eliminates need for complex sequencing or external pull-up networks; BIASV precharge prevents glitches during card mating/unmating. | Use Scenario: Enabling safe insertion/removal of sensor or actuator modules in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Signal isolation gate controlling data path between CPU bus and field-side I/O ports during hot-swap events. Use Value: Reduces EMI and ground bounce on shared backplane lines by clamping B-port to known voltage before physical contact is established. |
| Legacy Bus Extension | Multi-Voltage Domain Interface |
Use Scenario: Extending TTL-level parallel buses (e.g., ISA, LPC) across board-to-board connectors with minimal skew. IC Role / Device Role / Timing Role: Low-latency, low-resistance bridge maintaining signal fidelity across split-plane interfaces. Use Value: 0.25 ns tpd and 5 Ω ron preserve setup/hold timing margins and reduce jitter accumulation in multi-drop configurations. | Use Scenario: Interfacing 5-V microcontroller peripherals with 3.3-V FPGA I/O banks where voltage translation is not required. IC Role / Device Role / Timing Role: Passive analog switch enabling level-agnostic signal routing without DC translation or direction control. Use Value: Supports mixed-rail operation by allowing independent VCC (5 V) and BIASV (3.3 V), avoiding level shifter complexity and latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD6800ADGVR | Includes bus-hold circuitry on B-port; higher ICC (100 µA vs. 50 µA); same pinout and BIASV function | Preferred where B-port must retain last valid state after disconnection, e.g., in latch-sensitive control buses | Select SN74CBTD6800ADGVR only if bus-hold functionality is explicitly required; otherwise SN74CBT6800ADGVR offers lower quiescent current and simpler biasing. |
| SN74LVC1G3157DCKR | Single-channel SPDT switch; no BIASV pin; 5-V tolerant inputs; 6 Ω ron; different package (SC70-6) | Suitable for point-to-point signal routing, not 10-bit parallel bus isolation | Use SN74LVC1G3157DCKR only for discrete signal switching; SN74CBT6800ADGVR remains optimal for parallel bus applications requiring coordinated 10-bit enable and precharge. |
Compared with SN74CBTD6800ADGVR and SN74LVC1G3157DCKR, the SN74CBT6800ADGVR uniquely balances 10-bit parallel switching, user-configurable BIASV precharge, and ultra-low propagation delay-making it the only choice for live-insertion–critical backplane interconnects requiring simultaneous channel control and noise suppression.
Availability
SN74CBT6800ADGVR is available at Aetrix Electronics and suitable for modular backplane interconnects, hot-swappable I/O subsystems, and legacy bus extension designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant TSSOP packaging.
Supply support for SN74CBT6800ADGVR 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 decades of expertise in high-reliability interface solutions.
The SN74CBT6800ADGVR belongs to TI's CBT (Crossbar Bus Transceiver) family, engineered specifically for low-distortion, high-speed bus switching in live-insertion and hot-swap environments.
FAQ
What is the maximum allowable BIASV voltage for SN74CBT6800ADGVR?
The SN74CBT6800ADGVR specifies BIASV range as 1.3 V to VCC. Since VCC operates up to 5.5 V, the absolute maximum BIASV is 5.5 V. Exceeding this violates absolute maximum ratings and risks permanent damage. Always ensure BIASV ≤ VCC and ≥ 1.3 V for proper precharge function in the SN74CBT6800ADGVR.
Can SN74CBT6800ADGVR operate with VCC = 3.3 V?
No - the SN74CBT6800ADGVR requires VCC between 4 V and 5.5 V per recommended operating conditions. At 3.3 V, the device falls outside specification: on-resistance increases significantly, propagation delay degrades, and TTL input thresholds (VIH = 2 V, VIL = 0.8 V) may not be reliably met. Use SN74CBT6800ADGVR only within its rated 4–5.5 V VCC range.
Is SN74CBT6800ADGVR pin-compatible with SN74CBT6800APWR?
Yes - both SN74CBT6800ADGVR and SN74CBT6800APWR use identical 24-pin TSSOP footprints (PW package drawing), share identical pin numbering and functions, and are electrically interchangeable. The only difference is tape-and-reel packaging configuration (DGV vs. PWR suffix denotes carrier type, not pinout). Layouts designed for SN74CBT6800APWR fully support SN74CBT6800ADGVR.
How does the BIASV pin suppress live-insertion noise in SN74CBT6800ADGVR?
The BIASV pin connects to an internal ~10-kΩ resistor network that actively pulls all B1–B10 outputs to the applied BIASV voltage when ON = high. This prevents B-port pins from floating during connector mating, eliminating uncontrolled charge injection and ground bounce. In the SN74CBT6800ADGVR, this mechanism reduces transient noise amplitude by >80% compared to non-precharged switches during hot-swap events.
What is the thermal performance limitation of SN74CBT6800ADGVR in standard PCB layouts?
SN74CBT6800ADGVR has a junction-to-ambient thermal resistance (θJA) of 86°C/W in its TVSOP (DGV) package. With a maximum ambient temperature of 85°C and silicon junction limit of 150°C, the maximum allowable power dissipation is (150 − 85)/86 ≈ 0.76 W. However, due to its low ICC (50 µA) and typical ron (5 Ω), real-world dissipation rarely exceeds 140 mW - well within safe thermal margin for standard 2-layer PCBs.
SN74CBT6800ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 24-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TVSOP
SN74CBT6800ADGVR FAQ
1.How can I place an order for SN74CBT6800ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT6800ADGVR 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 SN74CBT6800ADGVR reliable?
The price and inventory of SN74CBT6800ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT6800ADGVR is usually 5 days.
3.What payment methods are accepted for SN74CBT6800ADGVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74CBT6800ADGVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74CBT6800ADGVR?
SN74CBT6800ADGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBT6800ADGVR 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 SN74CBT6800ADGVR?
For technical support, including SN74CBT6800ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT6800ADGVR requirements.
6.How does Aetrix verify that SN74CBT6800ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74CBT6800ADGVR 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 SN74CBT6800ADGVR meets industry standards.
7.What is the process for return or replacement of SN74CBT6800ADGVR?
All SN74CBT6800ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT6800ADGVR, 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 SN74CBT6800ADGVR part is unused and in its original packaging.
Return procedure for SN74CBT6800ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74CBT6800ADGVR Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
