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Texas Instruments 74CB3T16210DGGRG4
- Part No.:
- 74CB3T16210DGGRG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74CB3T16210DGGRG4.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,308
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Product details
Overview
74CB3T16210DGGRG4 from Texas Instruments is a 20-bit FET bus switch IC with dual 10-bit configurable switching, 5-V-tolerant I/Os, 2.3–3.6 V supply operation, 5 Ω typical ON-state resistance, and bidirectional near-zero-delay signal routing-used in mixed-voltage PCI/USB interface isolation and level translation.
For engineers reviewing the 74CB3T16210DGGRG4 datasheet, 74CB3T16210DGGRG4 pinout, 74CB3T16210DGGRG4 application, or 74CB3T16210DGGRG4 equivalent, key selection considerations include 5-V-tolerant I/O behavior under partial power-down, VCC-tracked output voltage translation, Ioff-enabled system-level isolation, and TSSOP-48 package compatibility with high-density PCB layouts.
Technical Context
The 74CB3T16210DGGRG4 implements two independent 10-bit FET-based analog switches controlled by separate OE inputs (1OE/2OE), enabling either dual 10-bit or unified 20-bit bus switching. Its CMOS-compatible control logic supports TTL/5-V/3.3-V drive levels, while its Ioff feature prevents backflow current during power-down states.
Each switch channel provides 5-V-tolerant data I/Os regardless of VCC state (powered up/down), supports 0–5 V signaling across 0.8 V to 5 V logic families, and delivers voltage translation where output tracks VCC-e.g., 5-V input → 3.3-V output with VCC = 3.3 V, or 5-V/3.3-V input → 2.5-V output with VCC = 2.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - Enables interoperability with 2.5-V and 3.3-V systems without level-shifter ICs. |
| ron (Typ) | 5 Ω - Minimizes insertion loss and signal distortion in high-speed digital paths (e.g., USB 2.0, PCI). |
| Cio(OFF) (Typ) | 5 pF - Reduces capacitive loading on upstream drivers and preserves signal integrity in fan-out scenarios. |
| tpd (Max) | 0.25 ns - Enables sub-nanosecond propagation for timing-critical interconnects without added skew. |
| Ioff Support | Yes - Ensures high-impedance isolation between powered and unpowered domains, critical for hot-swap and partial-power-down designs. |
| 5-V-Tolerant I/O | Yes - Allows direct connection to legacy 5-V peripherals while operating from 2.5-V/3.3-V rails, eliminating external clamping diodes. |
| ICC (Max) | 40 μA - Supports ultra-low static power in battery-powered portable equipment and always-on subsystems. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5 mm pitch, lead-free NiPdAu finish, MSL Level-1, RoHS compliant.
| 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 buses; support 0–5 V signaling regardless of VCC. |
| 1B1–1B10, 2B1–2B10 | Input/Output Port B (Group 1 & 2) | Corresponding bidirectional data terminals paired with A-side ports; enable full bus isolation or translation. |
| 1OE, 2OE | Active-Low Output Enable | Independent control of each 10-bit switch; low = ON (A↔B connected), high = OFF (high-Z isolation). |
| VCC | Positive Supply | Single 2.3–3.6 V rail powering internal gate drive and defining output voltage translation reference. |
| GND (Pins 7, 16, 27, 36) | Ground Reference | Four dedicated ground pins minimize ground bounce and improve noise immunity in high-speed switching. |
| NC (Pins 1, 4, 12, 13, 24, 25, 37, 48) | No Internal Connection | Unbonded pads; must be left floating or tied to GND per layout best practices-no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage translation | Output voltage tracks VCC: enables 5-V→3.3-V or 5-V/3.3-V→2.5-V level shift without external components. |
| 5-V-tolerant I/O with VCC off | Safe interface to 5-V signals even when device is unpowered-prevents latch-up and enables true hot-plug capability. |
| Ioff partial-power-down protection | Blocks reverse current flow between live and powered-down system domains, meeting JESD78 Class II requirements. |
| Low Cio(OFF) and ron | 5 pF OFF-capacitance + 5 Ω ON-resistance preserves signal edge rate and minimizes reflections in >100 MHz buses. |
| Undershoot clamp diodes | Integrated ESD protection on all data/control inputs limits negative transients to –1.2 V, enhancing robustness in noisy environments. |
Applications
| PCI Express Slot Interface | USB 2.0 Hub Isolation |
|---|---|
Use Scenario: Isolating 3.3-V host controller from 5-V legacy add-in cards in embedded industrial PCs. IC Role / Device Role / Timing Role: Bidirectional 10-bit bus switch providing VCC-referenced level translation and hot-swap-safe isolation between mismatched voltage domains. Use Value: Eliminates need for discrete level translators and series resistors while maintaining <0.25 ns propagation delay for PCIe Gen1 timing compliance. | Use Scenario: Enabling dynamic power gating of downstream USB ports in portable docking stations. IC Role / Device Role / Timing Role: Dual 10-bit switch controlling D+/D− and VBUS-sense lines with independent OE control for per-port enable/disable. Use Value: Achieves <10 ns enable/disable time and zero standby current draw via Ioff, extending battery life without compromising plug-and-play latency. |
| Memory Interleaving Controller | FPGA I/O Voltage Bridging |
Use Scenario: Routing address/data between 2.5-V DDR2 memory and 3.3-V microcontroller in space-constrained IoT gateways. IC Role / Device Role / Timing Role: 20-bit configurable switch supporting simultaneous 2.5-V ↔ 3.3-V translation across full bus width with matched propagation delay. Use Value: Maintains setup/hold timing margins under 200 MHz operation due to <5 Ω ron and 5 pF Cio(OFF), avoiding timing closure issues. | Use Scenario: Interfacing 5-V sensors and actuators to 2.5-V FPGA I/O banks in industrial PLC modules. IC Role / Device Role / Timing Role: 5-V-tolerant bidirectional switch translating sensor analog/digital outputs while preserving FPGA-configurable I/O voltage references. Use Value: Removes requirement for external voltage dividers or dedicated level-shifter ICs, reducing BOM count and board area by 30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CB3T16210DGVR | Same silicon die, TVSOP-48 package (5.1 mm × 4.5 mm); 1.2 mm height same, but 16.4 mm reel width vs 24.4 mm for DGG. | Preferred for ultra-thin handheld devices where board thickness is constrained; slightly higher thermal resistance (θJA = 58°C/W vs 70°C/W). | Select DGVR for space-limited layouts requiring smaller footprint; confirm PCB stencil aperture matches 0.5 mm pitch and 7.1 mm A0 cavity. |
| SN74CB3T16210-Q1 | Automotive-grade variant qualified to AEC-Q100 Grade 2 (–40°C to +105°C); identical electrical specs and pinout. | Required for ADAS camera links and infotainment head units needing extended temperature range and zero-defect reliability. | Choose Q1 version only when automotive qualification, enhanced ESD (HBM 2500 V), or longer lifecycle commitment is mandatory. |
Compared with SN74CB3T16210DGVR and SN74CB3T16210-Q1, the 74CB3T16210DGGRG4 offers optimal cost-performance balance for commercial industrial applications, with TSSOP-48 mechanical compatibility, full 2.3–3.6 V operation, and proven reliability at 85°C ambient-making it ideal for volume production where automotive certification is unnecessary.
Availability
74CB3T16210DGGRG4 is available at Aetrix Electronics and suitable for PCI interface isolation, USB 2.0 hub design, and FPGA-to-peripheral bridging requiring stable component supply across multi-year production cycles.
Supply support for 74CB3T16210DGGRG4 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 electronic components.
The Widebus™ family-including the 74CB3T16210DGGRG4-is engineered for high-speed digital interconnect applications demanding low-latency, low-power, and mixed-voltage signal routing in computing, communications, and industrial control systems.
FAQ
What is the maximum operating temperature for the 74CB3T16210DGGRG4?
The 74CB3T16210DGGRG4 is rated for continuous operation from –40°C to +85°C ambient temperature. This range is validated per JEDEC JESD22-A104 and confirmed in TI's production test data. The device maintains full electrical performance-including ron ≤ 9.5 Ω and tpd ≤ 0.25 ns-across this entire range, making it suitable for industrial control cabinets and outdoor networking equipment.
Does the 74CB3T16210DGGRG4 support hot-plug operation?
Yes, the 74CB3T16210DGGRG4 supports hot-plug operation due to its 5-V-tolerant I/Os and Ioff functionality. When VCC is 0 V, the device blocks current flow between live 5-V signal lines and unpowered circuitry, preventing damage per JESD78 Class II latch-up testing (>250 mA). This allows safe insertion/removal in live backplanes and modular systems without system reset.
Can the 74CB3T16210DGGRG4 be used as a 20-bit single bus switch?
Yes, the 74CB3T16210DGGRG4 can operate as a unified 20-bit bus switch by tying both 1OE and 2OE inputs low simultaneously. Its internal architecture treats the 20 data pairs (1A1–1B10 and 2A1–2B10) as electrically independent channels, so co-enabling both groups achieves full 20-bit bidirectional connectivity with matched ron and Cio characteristics across all lanes.
What is the recommended pull-up resistor value for OE pins on the 74CB3T16210DGGRG4?
Texas Instruments recommends a pull-up resistor to VCC with minimum value determined by the driver's current-sinking capability. For standard CMOS drivers, a 4.7 kΩ resistor ensures reliable high-impedance state during power-up/power-down while limiting current to <1 mA. This value satisfies VIH ≥ 2.0 V (for VCC = 2.7–3.6 V) and avoids excessive loading on control logic.
Is the 74CB3T16210DGGRG4 RoHS compliant and lead-free?
Yes, the 74CB3T16210DGGRG4 is RoHS compliant and lead-free, with NiPdAu (nickel-palladium-gold) lead finish per TI's PACKAGE OPTION ADDENDUM. It meets JEDEC J-STD-020 moisture sensitivity Level-1 (unlimited floor life at ≤30°C/60% RH) and is qualified for Pb-free reflow up to 260°C peak temperature.
74CB3T16210DGGRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CB
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-TSSOP
74CB3T16210DGGRG4 FAQ
1.How can I place an order for 74CB3T16210DGGRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CB3T16210DGGRG4 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 74CB3T16210DGGRG4 reliable?
The price and inventory of 74CB3T16210DGGRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CB3T16210DGGRG4 is usually 5 days.
3.What payment methods are accepted for 74CB3T16210DGGRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CB3T16210DGGRG4 transactions.
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4.How is shipping managed for 74CB3T16210DGGRG4?
74CB3T16210DGGRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CB3T16210DGGRG4 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 74CB3T16210DGGRG4?
For technical support, including 74CB3T16210DGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CB3T16210DGGRG4 requirements.
6.How does Aetrix verify that 74CB3T16210DGGRG4 is sourced from the original manufacturer or authorized distributors?
All 74CB3T16210DGGRG4 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 74CB3T16210DGGRG4 meets industry standards.
7.What is the process for return or replacement of 74CB3T16210DGGRG4?
All 74CB3T16210DGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74CB3T16210DGGRG4, 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 74CB3T16210DGGRG4 part is unused and in its original packaging.
Return procedure for 74CB3T16210DGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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