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Texas Instruments SN74CBT16233DGGR
- Part No.:
- SN74CBT16233DGGR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74CBT16233DGGR.pdf
- Description:
- IC MUX/DEMUX 16 X 1:2 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
SN74CBT16233DGGR from Texas Instruments is a 16-bit 1-of-2 FET multiplexer/demultiplexer in TSSOP-56 package, featuring 5-Ω on-state resistance, TTL-compatible control inputs (VIH = 2 V, VIL = 0.8 V), and operation across –40°C to 85°C. It enables bidirectional signal routing between one A-port and two B-ports (B1/B2) for memory interleaving and bus sharing in high-speed digital systems.
For engineers reviewing the SN74CBT16233DGGR datasheet, SN74CBT16233DGGR pinout, SN74CBT16233DGGR application, or SN74CBT16233DGGR equivalent, key selection criteria include its 56-pin TSSOP layout, dual-select (SEL1/SEL2) + TEST control logic, sub-1 ns propagation delay (tpd = 0.25 ns), and 128 mA continuous channel current capability.
Technical Context
The SN74CBT16233DGGR implements a 16-channel, bidirectional analog switch architecture using low-threshold FETs, with independent SEL1/SEL2 inputs selecting between B1 or B2 paths per channel pair. Its TEST input forces simultaneous connection of A to both B1 and B2, enabling diagnostic mode without through-current during switching.
Designed for 4.75–5.25 V supply operation, it supports TTL- and CMOS-level control signals and exhibits low input capacitance (Ci = 4.5 pF) and off-state I/O capacitance (Cio(OFF) = 4 pF), minimizing signal integrity impact in high-frequency data paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.75 V to 5.25 V - Ensures stable operation within standard 5-V TTL/CMOS logic rails. |
| ron (Typ) | 5 Ω - Enables low-loss, high-fidelity analog/digital signal switching with minimal voltage drop at 30 mA. |
| tpd (A↔B) | 0.25 ns - Supports ultra-fast data path switching in high-speed memory and bus applications. |
| VIH / VIL | 2 V / 0.8 V - Guarantees reliable recognition of TTL-level control signals without level-shifting circuitry. |
| Channel Count | 16-bit (8×2-channel pairs) - Provides full 16-line multiplexing/demultiplexing with independent path selection. |
| Operating Temp | –40°C to 85°C - Qualified for industrial-grade embedded and computing environments. |
| ICC (Max) | 3 µA - Delivers ultra-low static power consumption for always-on control logic sections. |
Pinout & Package
TSSOP-56 (DGG) package: 12.0 mm × 6.1 mm footprint, 1.2 mm max height, 0.5 mm pitch, moisture sensitivity level 1 (260°C peak reflow), RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A–16A | A-side data terminals | Primary bidirectional I/O ports connected to shared system bus or processor interface. |
| 1B1–16B1 | B1-side data terminals | First set of 16 bidirectional I/O ports routed when SEL1 = L, SEL2 = L. |
| 1B2–16B2 | B2-side data terminals | Second set of 16 bidirectional I/O ports routed when SEL1 = H, SEL2 = L. |
| SEL1, SEL2 | Path select controls | Two-bit binary select determining active B-port (B1 or B2); no internal pull-up/down. |
| TEST1, TEST2 | Diagnostic enable inputs | When asserted (H), connect each A port to both corresponding B1 and B2 ports simultaneously. |
| VCC, GND | Power and ground | Dual VCC/GND pairs (pins 14/15 and 40/41) reduce switching noise and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| 5-Ω low on-resistance | Minimizes insertion loss and signal distortion for 3.3 V/5 V digital and analog signals up to 100 MHz. |
| No through-current switching | Eliminates shoot-through current during state transitions, reducing dynamic power and EMI. |
| TTL-compatible inputs | Accepts standard 5-V TTL logic levels directly-no external biasing or level shifters required. |
| Independent dual-path control | SEL1/SEL2 allow per-channel or grouped 8-bit path selection, supporting flexible memory bank routing. |
| Test mode with forced dual-connect | TEST1/TEST2 assertion enables parallel connectivity for continuity verification and fault isolation. |
Applications
| Memory Interleaving | PCI/ISA Bus Sharing |
|---|---|
|
Use Scenario: Two independent DRAM banks share a single 16-bit data bus while maintaining separate address/control lines. IC Role / Device Role / Timing Role: Bidirectional 16-bit multiplexer routes data between CPU and either memory bank based on address MSBs. Use Value: Enables 2× effective memory bandwidth without doubling bus width or adding glue logic. |
Use Scenario: Legacy ISA peripherals and modern PCI devices share common I/O address decoding and data latching resources. IC Role / Device Role / Timing Role: Acts as a programmable bus switch isolating or connecting ISA/PCI data lanes under host control. Use Value: Reduces board real estate and eliminates discrete logic gates needed for bus arbitration. |
| Processor Debug Interface | FPGA I/O Expansion |
|
Use Scenario: JTAG or boundary-scan test access requires temporary rerouting of core debug signals to external test equipment. IC Role / Device Role / Timing Role: Configured via TEST inputs to mirror processor trace pins to external logic analyzer inputs. Use Value: Provides non-intrusive, zero-latency signal mirroring without modifying main signal path timing. |
Use Scenario: FPGA I/O banks are constrained; additional GPIOs are needed for sensor interfacing or status monitoring. IC Role / Device Role / Timing Role: Expands FPGA's 16-bit I/O by time-multiplexing two peripheral sets onto same physical pins. Use Value: Doubles functional I/O count without increasing FPGA package size or PCB layer count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET multiplexer/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD16211DGGR | 3.3-V only operation (VCC = 2.3–3.6 V); higher on-resistance (12 Ω typ); includes output-enable (OE) control. | Targeted for low-voltage LVTTL/LVCMOS systems; lacks TEST diagnostic mode. | Select when operating in 3.3-V domains and requiring OE-based bus isolation. |
| SN74CB3Q3257PWR | Quad 2:1 mux in TSSOP-16; 4-bit per device; lower channel count but smaller footprint and 3.3-V optimized. | Suitable for point-to-point signal routing rather than full 16-bit bus switching. | Choose for space-constrained designs needing modular, lower-pin-count muxing with tighter timing specs. |
Compared with SN74CBT16233DGGR, SN74CBTD16211DGGR trades 5-V compatibility and diagnostic TEST mode for lower-voltage operation and OE control, while SN74CB3Q3257PWR offers compact quad-channel flexibility at the cost of bus-wide scalability.
Availability
SN74CBT16233DGGR is available at Aetrix Electronics and suitable for memory interleaving, legacy bus sharing, FPGA I/O expansion, and processor debug interface applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74CBT16233DGGR 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 digital signal technologies, with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74CBT16233DGGR belongs to TI's Widebus™ family of high-speed FET bus switches, engineered specifically for low-latency, bidirectional signal routing in 5-V memory and bus architectures.
FAQ
What is the maximum continuous current rating per channel for the SN74CBT16233DGGR?
The SN74CBT16233DGGR supports a continuous channel current of 128 mA per switch path. This rating ensures robust performance in high-drive digital interfaces and low-voltage analog signal routing without thermal derating at full operating temperature range (–40°C to 85°C). The device maintains this current capability while sustaining its specified 5-Ω typical on-resistance and sub-1 ns propagation delay.
Does the SN74CBT16233DGGR require external pull-up or pull-down resistors on its SEL and TEST inputs?
No, the SN74CBT16233DGGR does not integrate internal pull-up or pull-down resistors on SEL1, SEL2, TEST1, or TEST2 inputs. These control inputs must be actively driven to defined logic levels (VIH ≥ 2 V or VIL ≤ 0.8 V) to ensure predictable channel selection and avoid floating-state misoperation. TI recommends tying unused control inputs to VCC or GND per SCBA004 guidelines to prevent increased ICC and potential latch-up.
Can the SN74CBT16233DGGR be used in 3.3-V systems?
The SN74CBT16233DGGR is specified only for 4.75–5.25 V operation and is not rated for reliable use at 3.3 V. Its TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and 5-Ω on-resistance are optimized for 5-V rail conditions. For 3.3-V applications, TI recommends alternatives such as SN74CBTD16211DGGR or SN74CB3Q3257PWR, which are characterized and guaranteed across 2.3–3.6 V or 2.5–3.6 V ranges respectively.
How does the TEST function operate in the SN74CBT16233DGGR?
When TEST1 and TEST2 are driven high, the SN74CBT16233DGGR connects each A-port terminal simultaneously to both corresponding B1 and B2 terminals-effectively creating a 1:2 fanout mode. This diagnostic mode enables continuity testing, short-circuit detection, and signal integrity validation without altering SEL1/SEL2 states, and operates with no through-current during transitions.
Is the SN74CBT16233DGGR pin-compatible with other members of the CBT162xx family?
Yes, the SN74CBT16233DGGR shares identical pinout and package (TSSOP-56) with SN74CBT16210DGGR and SN74CBT16244DGGR, differing only in internal signal routing and control logic. This allows direct PCB reuse across CBT162xx variants where functional requirements align-e.g., replacing a 16-bit bus switch with a 16-bit level shifter or buffer without layout changes.
SN74CBT16233DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer/Demultiplexer
- Circuit:
- 16 x 1:2
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
SN74CBT16233DGGR FAQ
1.How can I place an order for SN74CBT16233DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT16233DGGR 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 SN74CBT16233DGGR reliable?
The price and inventory of SN74CBT16233DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT16233DGGR is usually 5 days.
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Once your SN74CBT16233DGGR 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 SN74CBT16233DGGR?
For technical support, including SN74CBT16233DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT16233DGGR requirements.
6.How does Aetrix verify that SN74CBT16233DGGR is sourced from the original manufacturer or authorized distributors?
All SN74CBT16233DGGR 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 SN74CBT16233DGGR meets industry standards.
7.What is the process for return or replacement of SN74CBT16233DGGR?
All SN74CBT16233DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT16233DGGR, 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 SN74CBT16233DGGR part is unused and in its original packaging.
Return procedure for SN74CBT16233DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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