My Inquiry
My Account
Texas Instruments SN74CBT16233DGG
- Part No.:
- SN74CBT16233DGG
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74CBT16233DGG.pdf
- Description:
- IC 16BIT 1OF2 MUX/DEMUX 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,995
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74CBT16233DGG from Texas Instruments is a 16-bit 1-of-2 FET multiplexer/demultiplexer with 5-Ω on-state resistance, TTL-compatible control inputs (VIH = 2 V, VIL = 0.8 V), and operation over –40°C to 85°C. It enables bidirectional signal routing between one A-port and two B-ports (B1/B2) in memory interleaving, bus sharing, and data path consolidation applications.
For engineers reviewing the SN74CBT16233DGG datasheet, SN74CBT16233DGG pinout, SN74CBT16233DGG application, or SN74CBT16233DGG equivalent, key selection criteria include its 56-pin TSSOP package, 5-Ω switch resistance, 0.25 ns propagation delay (A↔B), dual-select control architecture (SEL1/SEL2), and test-mode capability for simultaneous B1/B2 connection.
Technical Context
The SN74CBT16233DGG implements a 16-channel, dual-path FET switch array with independent 1-of-2 selection per channel pair. Its control logic accepts TTL- and CMOS-level inputs (VCC = 4.75–5.25 V), and includes TEST inputs that force A-port connection to both B1 and B2 ports simultaneously-enabling diagnostic or broadcast modes.
No through-current occurs during switching transitions due to break-before-make design. Each channel supports bidirectional signal flow with matched on-resistance (5–7 Ω typical at VI = 0 V, II = 30 mA) and low off-capacitance (4 pF), preserving signal integrity in high-speed digital buses up to 100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5–7 Ω - ensures minimal voltage drop (<350 mV at 30 mA) and signal attenuation in 5-V logic paths. |
| Propagation delay (tpd) | 0.25 ns - enables sub-nanosecond signal routing critical for high-speed memory and bus arbitration. |
| Supply voltage (VCC) | 4.75–5.25 V - compatible with standard 5-V TTL/CMOS systems without level-shifting. |
| Control input thresholds | VIH = 2 V, VIL = 0.8 V - guarantees reliable switching with legacy 5-V TTL drivers. |
| Operating temperature | –40°C to +85°C - supports industrial-grade embedded and computing applications. |
| Package thermal resistance (θJA) | 64°C/W - defines maximum power dissipation limit (~120 mW at 85°C ambient) for thermal design. |
| Off-state capacitance (Cio) | 4 pF - minimizes crosstalk and loading on adjacent high-frequency signal lines. |
Pinout & Package
TSSOP-56 (DGG) package: 13.9 mm × 4.4 mm × 1.2 mm body, 0.5-mm lead pitch, exposed pad not present, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A–16A | A-port data terminals | Bidirectional I/O pins connected to common data bus or master interface. |
| 1B1–16B1 | B1-port data terminals | First set of 16 bidirectional I/Os routed when SEL1 = L, SEL2 = L. |
| 1B2–16B2 | B2-port data terminals | Second set of 16 bidirectional I/Os routed when SEL1 = H, SEL2 = L. |
| SEL1, SEL2 | Channel select inputs | Two-bit binary control determining active B-port (B1 or B2); no internal pull-up/down. |
| TEST1, TEST2 | Diagnostic enable inputs | When asserted (H), connects each A-pin to both corresponding B1 and B2 pins simultaneously. |
| VCC, GND | Power supply terminals | Single 5-V supply; two VCC (pins 14, 40) and two GND (pins 13, 39) for noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Eliminates shoot-through current during state transitions, preventing bus contention and power spikes. |
| TTL-compatible control inputs | Operates directly with legacy 5-V TTL drivers without external level shifters or pull resistors. |
| Dual B-port architecture | Supports flexible memory interleaving: e.g., A-port as CPU bus, B1/B2 as separate DRAM banks. |
| Low on-resistance matching | 5–7 Ω across all 16 channels ensures uniform timing skew (<0.5 ns) in parallel data paths. |
| Test mode with broadcast routing | TEST assertion enables A→B1+B2 fanout for system-level diagnostics or initialization sequences. |
Applications
| Memory Interleaving | PCI/ISA Bus Multiplexing |
|---|---|
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: SN74CBT16233DGG acts as a bidirectional 16-bit 1-of-2 data path selector, routing CPU reads/writes to either bank based on address MSB. Use Value: Enables 2× memory bandwidth utilization without doubling bus width; 5-Ω Ron preserves signal rise/fall times under 5-V TTL loads. | Use Scenario: Legacy ISA expansion cards share a PCI host bridge via time-multiplexed access to a common peripheral bus. IC Role / Device Role / Timing Role: SN74CBT16233DGG serves as a bidirectional bus switch, isolating ISA and PCI domains while enabling controlled data handoff. Use Value: 0.25 ns tpd ensures negligible latency penalty; TEST mode allows simultaneous bus visibility for protocol debugging. |
| Hot-Swap Backplane Interface | FPGA I/O Expansion |
Use Scenario: A modular backplane routes signals between hot-pluggable modules and a central controller using shared differential pairs. IC Role / Device Role / Timing Role: SN74CBT16233DGG provides isolation and path selection between module-specific B1/B2 lanes and the main A-lane. Use Value: Break-before-make prevents bus glitches during insertion/removal; 4 pF Cio limits capacitive loading on high-speed traces. | Use Scenario: An FPGA with limited I/O pins interfaces to two external peripherals requiring full 16-bit parallel access. IC Role / Device Role / Timing Role: SN74CBT16233DGG functions as a programmable I/O expander, allowing the FPGA to alternate between peripherals using SEL1/SEL2. Use Value: 5-Ω Ron maintains signal integrity at 50-MHz toggle rates; TTL-compatible inputs simplify FPGA GPIO drive requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET multiplexer/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16210DGGR | 10-bit, dual 1-of-2 configuration; same Ron (5–7 Ω), but fewer channels and different pinout. | Suitable only for 10-bit or narrower data paths; cannot replace 16-bit routing without redesign. | Select when board space or channel count permits reduced width and lower cost. |
| SN74CBTD16211DGGR | 16-bit, but includes 3.3-V tolerant control inputs and higher Ron (7–10 Ω); requires VCC = 3.3 V or 5 V. | Enables mixed-voltage systems (3.3-V logic controlling 5-V data paths), but adds 2.5 ns tpd penalty. | Choose for voltage translation scenarios where SN74CBT16233DGG's pure 5-V operation is insufficient. |
Compared with SN74CBT16233DGG, SN74CBT16210DGGR reduces channel count by 37.5% and simplifies layout but sacrifices full 16-bit support; SN74CBTD16211DGGR trades speed and Ron for 3.3-V control compatibility-making it viable only where voltage domain bridging is required.
Availability
SN74CBT16233DGG is available at Aetrix Electronics and suitable for memory interleaving, PCI/ISA bus multiplexing, and FPGA I/O expansion requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant TSSOP packaging.
Supply support for SN74CBT16233DGG 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN74CBT16233DGG belongs to TI's Widebus™ family of high-speed FET bus switches, engineered specifically for low-latency, bidirectional signal routing in 5-V digital systems with strict timing and signal integrity requirements.
FAQ
What is the maximum continuous current rating per channel for the SN74CBT16233DGG?
The SN74CBT16233DGG supports a continuous channel current of 128 mA per switch path. This rating applies under recommended operating conditions (VCC = 4.75–5.25 V, TA ≤ 85°C) and ensures reliable conduction without thermal derating in typical 5-V bus applications. Exceeding this value risks junction overheating and long-term reliability degradation.
Does the SN74CBT16233DGG require external pull-up or pull-down resistors on SEL and TEST inputs?
No, the SN74CBT16233DGG does not integrate internal pull-up or pull-down resistors on SEL1, SEL2, TEST1, or TEST2 inputs. All unused control inputs must be externally held at VCC or GND to prevent floating states that could cause undefined switching behavior or increased ICC. This requirement is explicitly stated in TI's recommended operating conditions.
Can the SN74CBT16233DGG operate with a 3.3-V supply voltage?
No, the SN74CBT16233DGG is specified only for 4.75–5.25 V operation. Its absolute maximum VCC rating is 7 V, but functional performance-including guaranteed Ron, tpd, and VIH/VIL thresholds-is validated exclusively within the 5-V range. Using 3.3 V will result in undefined switching behavior and potential failure to meet datasheet timing or resistance specs.
How does the TEST mode function in the SN74CBT16233DGG?
When TEST1 and TEST2 are driven high, the SN74CBT16233DGG connects each A-port pin (1A–16A) simultaneously to both corresponding B1 and B2 pins (e.g., 1A → 1B1 and 1B2). This broadcast mode enables system-level diagnostics, initialization verification, or fault injection testing without modifying SEL1/SEL2 states.
Is the SN74CBT16233DGG pin-compatible with other members of the CBT16xxx series?
No-while the SN74CBT16233DGG shares the 56-pin TSSOP (DGG) footprint with some CBT16xxx devices, its pinout is unique. For example, SN74CBT16210DGGR uses a 48-pin TSSOP and allocates SEL/TEST signals differently. Direct replacement requires verification of signal mapping, power pin placement, and functional equivalence-not just package compatibility.
SN74CBT16233DGG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- 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
SN74CBT16233DGG FAQ
1.How can I place an order for SN74CBT16233DGG through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT16233DGG 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 SN74CBT16233DGG reliable?
The price and inventory of SN74CBT16233DGG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT16233DGG is usually 5 days.
3.What payment methods are accepted for SN74CBT16233DGG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74CBT16233DGG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74CBT16233DGG?
SN74CBT16233DGG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBT16233DGG 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 SN74CBT16233DGG?
For technical support, including SN74CBT16233DGG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT16233DGG requirements.
6.How does Aetrix verify that SN74CBT16233DGG is sourced from the original manufacturer or authorized distributors?
All SN74CBT16233DGG 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 SN74CBT16233DGG meets industry standards.
7.What is the process for return or replacement of SN74CBT16233DGG?
All SN74CBT16233DGG units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT16233DGG, 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 SN74CBT16233DGG part is unused and in its original packaging.
Return procedure for SN74CBT16233DGG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74CBT16233DGG 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…
