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Texas Instruments 74CBTLV16211DLRG4
- Part No.:
- 74CBTLV16211DLRG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74CBTLV16211DLRG4.pdf
- Description:
- IC BUS SWITCH 12 X 1:1 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,304
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Product details
Overview
74CBTLV16211DLRG4 from Texas Instruments is a 24-bit high-speed FET bus switch IC organized as dual 12-bit switches with independent OE controls, 5-Ω on-state resistance, rail-to-rail signal switching, and Ioff partial-power-down support - used in high-bandwidth data path isolation for telecom backplanes and server memory interconnects.
For engineers reviewing the 74CBTLV16211DLRG4 datasheet, 74CBTLV16211DLRG4 pinout, 74CBTLV16211DLRG4 application, or 74CBTLV16211DLRG4 equivalent, key selection criteria include guaranteed 5-Ω ron at 2.5 V/3.3 V, sub-1 ns enable/disable timing, ±10 µA Ioff at VCC = 0 V, and SSOP-56 package compatibility with JEDEC MO-194 footprint.
Technical Context
This device implements two independent 12-bit bidirectional FET switch arrays, each controlled by a dedicated OE input. Switching is analog-transparent: no level translation, no internal logic, and no propagation delay introduced beyond RC time constant of ron and load capacitance.
It supports true partial-power-down operation via Ioff - blocking reverse current flow when VCC = 0 V while ports remain biased between 0 V and 3.6 V. Rail-to-rail operation ensures full-swing signal integrity across 2.3 V to 3.6 V supply range without clamping or distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5 Ω typical at VCC = 2.5 V/3.3 V - enables minimal voltage drop and signal attenuation in high-speed parallel buses. |
| Propagation delay (tpd) | 0.15–0.25 ns - supports >5 Gbps aggregate throughput per switch bank with negligible timing skew. |
| Ioff leakage | 10 µA max at VCC = 0 V - prevents backdrive damage during hot-swap or staggered power sequencing. |
| Supply voltage range | 2.3 V to 3.6 V - compatible with LVTTL, LVCMOS, and mixed-voltage 2.5 V/3.3 V system interfaces. |
| Enable/disable time (ten/tdis) | 1–7.7 ns - allows precise control of bus arbitration windows in multi-master memory or I/O expansion systems. |
| Input capacitance (Ci) | 4.5 pF - minimizes loading on upstream drivers and preserves signal edge rates in dense PCB layouts. |
| ESD rating | 2000-V HBM, 200-V MM - meets industrial-grade robustness requirements without external protection. |
Pinout & Package
74CBTLV16211DLRG4 uses a 56-pin SSOP (DL) package per JEDEC MO-194, 11.4 mm × 7.9 mm body size, 0.5 mm pitch, and 1.2 mm max height. Pin 1 located at top-left corner with index area marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A12, 2A1–2A12 | Port A inputs/outputs (Bank 1 & 2) | Bidirectional analog signal terminals - directly connected to B-side when OE active low. |
| 1B1–1B12, 2B1–2B12 | Port B inputs/outputs (Bank 1 & 2) | Matched 1:1 counterparts to A-side; fully symmetric, no directionality enforced. |
| 1OE, 2OE | Output-enable controls | Active-low enables respective 12-bit switch bank; must be pulled up to VCC during power-up/down for Hi-Z guarantee. |
| VCC | Power supply | Single 2.3–3.6 V rail powers all switch FETs and internal bias circuitry; no separate logic or analog supply required. |
| GND (Pins 8, 23, 36, 51) | Ground reference | Four dedicated ground pins minimize ground bounce and ensure stable ron across full 24-bit channel. |
| NC (Pins 1, 56) | No internal connection | Unbonded pads - must remain unconnected; no routing or thermal relief needed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports full 0 V to VCC signal swing without clipping or level shifting - preserves integrity of DDR, PCI, and parallel ATA waveforms. |
| Ioff partial-power-down protection | Blocks >99.9% of backflow current when VCC = 0 V - eliminates need for external isolation diodes in hot-plug subsystems. |
| Ultra-low on-state resistance | 5 Ω typical ensures <50 mV drop at 24 mA per line - critical for maintaining noise margin in high-density 24-bit data buses. |
| Sub-nanosecond switching | 0.15 ns tpd enables use in >5 Gbps serial-parallel hybrid architectures without introducing deterministic jitter. |
| JEDEC MO-194 compliant SSOP | Standard 56-pin SSOP footprint allows drop-in replacement in existing LVTTL/LVCMOS board designs without layout revision. |
Applications
| Telecom Backplane Interconnect | Server Memory Expansion |
|---|---|
|
Use Scenario: Isolating redundant control paths between line cards and switch fabric in carrier-grade routers. IC Role / Device Role / Timing Role: Bidirectional analog bus switch enabling dynamic reconfiguration of address/data lines without disrupting active traffic. Use Value: 5-Ω ron and sub-1 ns timing preserve signal fidelity across 12-inch FR4 traces, reducing bit error rate in 10G+ backplane links. |
Use Scenario: Adding DIMM slots to enterprise-class motherboards while maintaining signal integrity on shared memory channels. IC Role / Device Role / Timing Role: 24-bit switch isolating secondary memory banks during initialization or fault recovery sequences. Use Value: Ioff protection prevents VCC-supply collapse on powered-down DIMMs from corrupting active memory controller outputs. |
| Industrial PLC I/O Expansion | Test Equipment Signal Routing |
|
Use Scenario: Multiplexing sensor inputs and actuator outputs across modular I/O carriers in programmable logic controllers. IC Role / Device Role / Timing Role: Dual 12-bit switch enabling software-selectable analog/digital signal paths between CPU and field modules. Use Value: Rail-to-rail operation supports both 0–10 V analog and 24 V digital signals without external level shifters or clamps. |
Use Scenario: Reconfigurable signal path matrix in automated test equipment for probing multiple DUTs with shared instruments. IC Role / Device Role / Timing Role: Low-capacitance (4.5 pF), low-ron switch minimizing insertion loss and phase distortion in RF/mixed-signal paths. Use Value: 6.5 pF off-capacitance ensures minimal crosstalk between adjacent channels in high-density probe card assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3861RJR | 24-bit single-OE configuration; 6 Ω ron; TSSOP-56 package. | Lacks independent bank control - unsuitable where asynchronous isolation of two 12-bit domains is required. | Select when simplified control logic suffices and board space permits TSSOP footprint. |
| SN74CBT16212DGGR | 24-bit dual-OE; 7 Ω ron; higher ICC (30 µA); same SSOP-56 package. | Higher ron increases voltage drop at 24 mA; not rated for Ioff - requires external power sequencing safeguards. | Select only if legacy design already uses CBT family and Ioff is not required. |
Compared with SN74CBTLV3861RJR and SN74CBT16212DGGR, the 74CBTLV16211DLRG4 uniquely delivers dual independent OE control, lowest ron (5 Ω), and certified Ioff - making it the only option for hot-swappable, mixed-voltage, and high-fidelity bus isolation where timing, power sequencing, and signal integrity are co-constrained.
Availability
74CBTLV16211DLRG4 is available at Aetrix Electronics and suitable for telecom backplane interconnect, server memory expansion, and industrial PLC I/O requiring stable component supply across extended product lifecycles.
Supply support for 74CBTLV16211DLRG4 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 communications ICs.
The CBTLV family delivers ultra-low-latency, rail-to-rail bus switches optimized for high-speed data path isolation in telecom infrastructure, computing, and industrial automation systems.
FAQ
What is the maximum operating temperature range for the 74CBTLV16211DLRG4?
The 74CBTLV16211DLRG4 is specified for continuous operation from −40°C to +85°C ambient temperature. This range is validated per JEDEC JESD78 and applies to all electrical parameters including ron, tpd, and Ioff - ensuring reliable performance in industrial and telecom environments without derating.
Does the 74CBTLV16211DLRG4 support hot-swap capability?
Yes, the 74CBTLV16211DLRG4 supports hot-swap via its Ioff feature: when VCC = 0 V, leakage remains ≤10 µA even with ports biased from 0 V to 3.6 V. This prevents backdrive currents that could damage upstream drivers or disrupt live backplanes during module insertion/removal.
Can the 74CBTLV16211DLRG4 be used with 1.8 V logic interfaces?
No - the 74CBTLV16211DLRG4 requires VCC between 2.3 V and 3.6 V and is not characterized for 1.8 V operation. Its VIH/VIL thresholds scale with VCC; at 1.8 V supply, control inputs would fail to meet logic thresholds and ron would increase significantly beyond specification.
How should unused OE pins be handled on the 74CBTLV16211DLRG4?
Unused OE pins must be tied to VCC through a pullup resistor (minimum value determined by driver sink capability) to guarantee high-impedance state during power-up/down transients. Leaving OE floating risks undefined switch states and potential bus contention in live systems.
Is the 74CBTLV16211DLRG4 RoHS compliant and lead-free?
Yes, the 74CBTLV16211DLRG4 is RoHS compliant with NIPDAU (nickel-palladium-gold) lead finish and meets JEDEC Level-1 moisture sensitivity rating (260°C peak reflow). Full compliance documentation, including material declarations and test reports, is available upon request from Aetrix Electronics.
74CBTLV16211DLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBTLV
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Bus Switch
- Circuit:
- 12 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:
- 56-SSOP
74CBTLV16211DLRG4 FAQ
1.How can I place an order for 74CBTLV16211DLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV16211DLRG4 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 74CBTLV16211DLRG4 reliable?
The price and inventory of 74CBTLV16211DLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV16211DLRG4 is usually 5 days.
3.What payment methods are accepted for 74CBTLV16211DLRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV16211DLRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV16211DLRG4?
74CBTLV16211DLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV16211DLRG4 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 74CBTLV16211DLRG4?
For technical support, including 74CBTLV16211DLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV16211DLRG4 requirements.
6.How does Aetrix verify that 74CBTLV16211DLRG4 is sourced from the original manufacturer or authorized distributors?
All 74CBTLV16211DLRG4 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 74CBTLV16211DLRG4 meets industry standards.
7.What is the process for return or replacement of 74CBTLV16211DLRG4?
All 74CBTLV16211DLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV16211DLRG4, 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 74CBTLV16211DLRG4 part is unused and in its original packaging.
Return procedure for 74CBTLV16211DLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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