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Texas Instruments SN74CBT16213DL
- Part No.:
- SN74CBT16213DL
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74CBT16213DL.pdf
- Description:
- IC BUS FET EXCH SW 12X2:2 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,809
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Product details
Overview
SN74CBT16213DL from Texas Instruments is a 24-bit FET bus-exchange switch in the Widebus™ family, functioning as either a 24-bit bidirectional bus switch or a 12-bit data-exchange switch with three select inputs (S0–S2). It delivers 5-Ω on-state resistance, TTL-compatible control inputs, and operates from 4 V to 5.5 V across –40°C to 85°C - enabling low-latency signal routing in high-speed digital backplanes and memory interface subsystems.
For engineers reviewing the SN74CBT16213DL datasheet, SN74CBT16213DL pinout, SN74CBT16213DL application, or SN74CBT16213DL equivalent, key selection criteria include its 24-bit dual-port architecture, sub-1-ns propagation delay (A↔B), 128-mA continuous channel current rating, and SSOP-56 package compatibility with space-constrained board layouts.
Technical Context
The SN74CBT16213DL implements a CMOS FET-based analog switch matrix with independent A1–A12/B1–B12 port pairs and three-level decode logic (S0–S2) for dynamic bus reconfiguration. Its TTL-compatible inputs drive internal level-shifted gates without external biasing, while the low 5-Ω ron ensures minimal RC delay under 50-pF load conditions.
It supports seven distinct switching modes per function table - including full disconnect, A↔B mirroring, A1↔B1/A2↔B2 splitting, and cross-exchange (A1↔B2/A2↔B1) - all controlled by static S0–S2 states. No clock or enable sequencing is required; operation is purely combinational and stateless.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5 Ω typical - enables <1 ns propagation delay with 50-pF loads and preserves signal integrity in 3.3-V/5-V mixed-signal buses. |
| Supply voltage range | 4 V to 5.5 V - compatible with standard 5-V TTL and 3.3-V systems via level-shifting input structure. |
| Control input compatibility | TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 2 V) - eliminates need for external level translators when driven by legacy 5-V logic. |
| Channel current rating | 128 mA continuous - supports robust driving of terminated transmission lines and multiple CMOS inputs without thermal derating. |
| Propagation delay (tpd) | 0.25 ns (VCC = 5 V) - measured A↔B path; enables use in >1-GHz data strobe or address bus applications. |
| Operating temperature | –40°C to +85°C - qualified for industrial-grade embedded systems and telecom line cards. |
| Input capacitance (Ci) | 4.5 pF - minimizes loading on upstream drivers and maintains timing margins in fan-out-heavy configurations. |
Pinout & Package
SN74CBT16213DL is housed in a 56-pin Shrink Small Outline Package (SSOP-DL), 13.9 mm × 7.9 mm × 1.2 mm body height, with 0.5-mm lead pitch and gull-wing terminations. Thermal resistance θJA is 56°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S0, S1, S2 | Bus exchange select inputs | Three-level binary decoder controlling 7 switching modes; must be held at VCC or GND for stable operation. |
| A1–A12, B1–B12 | Signal port terminals | 24 bidirectional I/O channels grouped as 12 A-side and 12 B-side ports; no internal directionality - signal flow determined solely by S0–S2 state. |
| VCC | Power supply | Single 4–5.5-V supply powers all switches and input buffers; decoupling required within 10 mm of pin 27. |
| GND (pins 8, 17, 30, 43) | Ground reference | Four dedicated ground pins minimize ground bounce and ensure consistent ron across all 24 channels. |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit bidirectional bus switching | Enables zero-latency, non-inverting signal pass-through between two synchronous data domains without buffering or timing skew. |
| Programmable bus exchange | Supports real-time reconfiguration of data paths (e.g., A1↔B2 + A2↔B1) using only three static control lines - ideal for FPGA I/O expansion and test access multiplexing. |
| 5-Ω low on-resistance | Reduces voltage drop and power loss across switched signals, maintaining logic thresholds even at 64-mA channel current. |
| TTL-compatible control interface | Eliminates level-shifter ICs when interfacing with legacy 5-V microcontrollers, CPLDs, or ASICs - simplifies BOM and layout. |
| Zero static power consumption | ICC ≤ 3 µA at VCC = 5.5 V - suitable for always-on system management buses and low-power standby modes. |
Applications
| Memory Interface Multiplexing | FPGA I/O Expansion |
|---|---|
Use Scenario: Sharing a single DDR SDRAM controller between two independent processor cores via time-multiplexed address/data buses. IC Role / Device Role / Timing Role: Bidirectional bus switch that routes A-side (controller) signals to either B1-side (Core A memory) or B2-side (Core B memory) based on S0–S2 state. Use Value: Enables dual-core memory arbitration without adding clock-domain crossing logic or increasing PCB layer count. | Use Scenario: Expanding limited FPGA I/O pins to drive multiple peripheral modules (e.g., ADC, DAC, UART) with shared control lines. IC Role / Device Role / Timing Role: Configurable bus exchanger mapping FPGA bank A to peripheral set 1 and bank B to peripheral set 2, or cross-connecting for diagnostic loopback. Use Value: Reduces FPGA pin count pressure while preserving deterministic timing - no added setup/hold delays beyond intrinsic ron-based propagation. |
| Test Access Multiplexer | Digital Backplane Signal Routing |
Use Scenario: Providing JTAG or boundary-scan access to multiple ASICs on a single test fixture without physical probe repositioning. IC Role / Device Role / Timing Role: Static-selectable signal router connecting TDI/TDO/TCK/TMS from tester to one of 12 device chains via A↔B or A↔B2 mode. Use Value: Eliminates manual jumpering and relay-based switching; supports automated test sequence execution with <1 ns channel skew. | Use Scenario: Reconfiguring high-speed parallel control bus connections between line cards in modular telecom chassis. IC Role / Device Role / Timing Role: Hot-swap-capable bus switch isolating faulty cards while rerouting control signals through redundant paths using S0–S2 control. Use Value: Achieves <100-ns failover latency and maintains signal fidelity up to 200 MHz due to 5-Ω ron and low Ci. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD16213DGGR | Higher 12-Ω ron, TSSOP-56 package, 2000-piece tape-and-reel only. | Lower bandwidth support (≤150 MHz); suited for cost-sensitive industrial controls where <1 ns delay is not critical. | Select when footprint compatibility with DGG package is required and thermal budget allows higher ron-induced voltage drop. |
| 74ALVC164245DGGR | Directional 16-bit transceiver with 3.3-V I/O, built-in level shifting, and 3-state outputs - not bidirectional analog switch. | Requires direction control and cannot perform true bus exchange; used where voltage translation between 3.3 V and 5 V is mandatory. | Choose only if level translation is needed and bus topology permits unidirectional data flow with explicit OE control. |
Compared with SN74CBTD16213DGGR and 74ALVC164245DGGR, the SN74CBT16213DL offers the lowest ron and true bidirectional analog switching - making it uniquely suitable for high-fidelity, low-skew signal routing where timing determinism and zero-direction-control overhead are essential.
Availability
SN74CBT16213DL is available at Aetrix Electronics and suitable for memory interface multiplexing, FPGA I/O expansion, test access multiplexing, and digital backplane signal routing requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74CBT16213DL 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 industrial, automotive, and communications markets.
The SN74CBT16213DL belongs to TI's Widebus™ family of high-speed bus switches, engineered specifically for low-latency, bidirectional signal routing in 5-V and mixed-voltage digital systems - targeting backplane interconnect, memory subsystems, and programmable logic interface consolidation.
FAQ
What is the maximum operating frequency supported by the SN74CBT16213DL?
The SN74CBT16213DL does not specify a maximum clock frequency because it is an analog switch, not a clocked device. Its usable bandwidth is determined by RC time constant: with 5-Ω ron and 50-pF load, tpd is 0.25 ns, supporting clean edge transmission up to ~2 GHz for short traces. System-level bandwidth depends on PCB layout, termination, and source/load impedance matching - not internal clocking.
Does the SN74CBT16213DL require external pull-up or pull-down resistors on S0–S2 control inputs?
No - the SN74CBT16213DL has TTL-compatible inputs with defined VIL (≤0.8 V) and VIH (≥2 V), and TI explicitly states that unused control inputs must be held at VCC or GND. External resistors are unnecessary if driven directly by logic outputs; floating inputs are prohibited and may cause undefined switching behavior or increased ICC.
Can the SN74CBT16213DL be used to switch analog signals such as audio or sensor voltages?
The SN74CBT16213DL is characterized and specified only for digital logic-level signals (0–5.5 V). While its FET structure permits analog pass-through, TI does not guarantee performance for analog waveforms - parameters like THD, crosstalk, or flatness vs. frequency are unspecified. For analog signal routing, TI recommends dedicated analog switches like the TMUX series. Use SN74CBT16213DL strictly for digital bus switching.
What is the thermal resistance (θJA) of the SN74CBT16213DL in its SSOP-DL package?
The SN74CBT16213DL in the DL package has a specified junction-to-ambient thermal resistance (θJA) of 56°C/W under JEDEC-standard PCB mounting conditions (2-layer board, 1-in² copper pad). This value assumes proper thermal vias and ground plane coupling; actual θJA improves with enhanced PCB copper area and airflow. The DGG (TSSOP) variant has higher θJA at 64°C/W.
Is the SN74CBT16213DL pin-compatible with other devices in the CBT16xxx series?
No - the SN74CBT16213DL is not pin-compatible with other CBT16xxx devices such as SN74CBT16210 or SN74CBT16212. Each part has unique pin assignments for select inputs, port groupings, and power/ground distribution. The DL package pinout is specific to the 24-bit bus-exchange function and differs in S0–S2 placement, VCC/GND count, and port numbering versus 12-bit or 16-bit variants.
SN74CBT16213DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus FET Exchange Switch
- Circuit:
- 12 x 2:2
- Independent Circuits:
- 1
- 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:
- 56-SSOP
SN74CBT16213DL FAQ
1.How can I place an order for SN74CBT16213DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT16213DL 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 SN74CBT16213DL reliable?
The price and inventory of SN74CBT16213DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT16213DL is usually 5 days.
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SN74CBT16213DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBT16213DL 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 SN74CBT16213DL?
For technical support, including SN74CBT16213DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT16213DL requirements.
6.How does Aetrix verify that SN74CBT16213DL is sourced from the original manufacturer or authorized distributors?
All SN74CBT16213DL 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 SN74CBT16213DL meets industry standards.
7.What is the process for return or replacement of SN74CBT16213DL?
All SN74CBT16213DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT16213DL, 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 SN74CBT16213DL part is unused and in its original packaging.
Return procedure for SN74CBT16213DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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