My Inquiry
My Account
Texas Instruments SN74CBTLV3253DBQR
- Part No.:
- SN74CBTLV3253DBQR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SN74CBTLV3253DBQR.pdf
- Description:
- IC MUX/DEMUX 2 X 4:1 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,069
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74CBTLV3253DBQR from Texas Instruments is a dual 1-of-4 FET multiplexer/demultiplexer for high-speed, low-voltage signal routing in data-path switching applications. It features 5 Ω typical on-state resistance, rail-to-rail I/O switching, and Ioff support for partial-power-down mode. It operates from 2.3 V to 3.6 V and delivers sub-nanosecond propagation delay (0.15 ns typ at VCC = 2.5 V), making it suitable for enterprise computing interconnects and wired networking bus arbitration.
For engineers reviewing the SN74CBTLV3253DBQR datasheet, SN74CBTLV3253DBQR pinout, SN74CBTLV3253DBQR application, or SN74CBTLV3253DBQR equivalent, key selection criteria include its 16-pin SSOP package, active-low dual OE control, 5 Ω switch RON, -40°C to 85°C operating range, and functional equivalence to QS3253 in 4:1 bidirectional signal routing.
Technical Context
The SN74CBTLV3253DBQR implements two independent 1-of-4 analog switches using low-threshold FETs, enabling bidirectional, rail-to-rail signal pass-through without level translation. Its select logic (S0/S1) determines which of four B-port channels connects to each A-port channel, while separate 1OE and 2OE inputs disable respective mux/demux sections independently.
Designed for partial-power-down operation, the device guarantees Ioff ≤ 15 µA when VCC = 0 V, preventing backflow current and ensuring channel isolation during power sequencing. Its ESD robustness (2000 V HBM) and latch-up immunity (>100 mA per JESD78 Class II) support reliable deployment in industrial and infrastructure systems with mixed-voltage domain interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.3 V to 3.6 V - enables compatibility with 2.5 V and 3.3 V logic domains without level shifters |
| On-state resistance | 5 Ω typ at VCC = 2.5 V, II = 64 mA - minimizes insertion loss and signal distortion in high-speed data paths |
| Propagation delay | 0.15 ns typ (A↔B) at VCC = 2.5 V - supports >1 GHz signal routing with negligible timing skew |
| Ioff | 15 µA max at VCC = 0 V - ensures safe hot-insertion and power sequencing in multi-rail systems |
| Operating temperature | -40°C to +85°C - qualified for enterprise servers, networking equipment, and industrial controllers |
| ESD rating | 2000 V HBM - meets JEDEC JS-001 for robust handling in automated assembly and field service |
| Package | SSOP-16 (4.90 mm × 3.90 mm) - surface-mount footprint compatible with standard reflow profiles and IPC-7351B land patterns |
Pinout & Package
SN74CBTLV3253DBQR is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch and dimensions of 4.90 mm × 3.90 mm. The package supports automated placement and reflow soldering per JEDEC Level-2 moisture sensitivity classification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Active-low enable for Channel 1 | Drives entire 1A–1B1–1B4 switch array into high-Z state when high; required for power-down isolation |
| S1, S0 | Binary select inputs for both channels | Set 1-of-4 routing path (L/L → B1, L/H → B2, H/L → B3, H/H → B4); shared between both mux sections |
| 1A, 2A | Common I/O ports (Channel 1 & 2) | Bidirectional signal terminals connecting to system buses or processors; rail-to-rail capable up to 4.6 V |
| 1B1–1B4, 2B1–2B4 | Individual I/O ports (four per channel) | Connect to peripheral devices or memory banks; each pair forms a low-RON switch path when enabled |
| VCC | Power supply | Single 2.3–3.6 V supply powers all logic and switch circuitry; bypass capacitor (0.1 µF) required near pin 16 |
| GND | Ground reference | Return path for all internal currents; must be low-impedance and tied to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 1-of-4 mux/demux | Enables simultaneous routing of two separate 4:1 data streams (e.g., dual DDR address/control buses) |
| 5 Ω typical RON | Reduces voltage drop and timing uncertainty under 64 mA load, preserving signal integrity in high-speed parallel interfaces |
| Rail-to-rail I/O | Supports input/output voltages from GND to 4.6 V regardless of VCC, allowing interoperability with overvoltage-tolerant peripherals |
| Ioff protection | Blocks current flow when VCC = 0 V, eliminating risk of backfeeding powered-down subsystems during hot-swap events |
| Functionally equivalent to QS3253 | Provides drop-in replacement capability for legacy designs using QS3253, simplifying component obsolescence mitigation |
Applications
| Datacenter Interconnect | Wired Networking Switch Fabric |
|---|---|
Use Scenario: Dynamic routing of PCIe or SATA control signals between host CPU and multiple storage modules in blade servers. IC Role / Device Role / Timing Role: Dual 4:1 analog switch enabling time-multiplexed access to shared configuration buses without signal degradation. Use Value: 5 Ω RON and 0.15 ns tpd preserve setup/hold margins across 2.5 GHz differential links, reducing bit error rates in high-density compute racks. |
Use Scenario: Selecting among four Ethernet PHYs for MAC interface arbitration in managed Layer-2 switches. IC Role / Device Role / Timing Role: Bidirectional signal router for MDIO/MDC and RMII interfaces, controlled by FPGA GPIOs. Use Value: Rail-to-rail I/O tolerance allows direct connection to 3.3 V PHYs and 2.5 V MACs without level shifters, cutting BOM cost and board area. |
| Industrial Motor Drive Control | Video Broadcasting Signal Routing |
Use Scenario: Multiplexing encoder feedback signals (A/B/Z quadrature) from multiple servo motors to a single motion controller ADC input. IC Role / Device Role / Timing Role: Low-distortion analog switch providing isolated, low-capacitance paths for 100 kHz position signals. Use Value: Cio(OFF) = 5.5 pF (B port) minimizes crosstalk between unselected channels, maintaining encoder resolution accuracy. |
Use Scenario: Reconfigurable routing of SDI or HDMI auxiliary data lanes (e.g., EDID, CEC) in IP-based video transcoders. IC Role / Device Role / Timing Role: Hot-pluggable signal selector supporting firmware-controlled input source switching without interrupting main video stream. Use Value: Ioff ≤ 15 µA ensures no DC leakage into powered-off video sources, preventing phantom power issues during dynamic topology changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 1-of-4 FET multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| QS3253 | Functionally identical pinout and electrical specs; same 5 Ω RON, 0.15 ns tpd, and Ioff performance | Legacy part with discontinued production status; limited long-term availability and no 125°C variants | Acceptable for legacy redesigns where TI's SN74CBTLV3253DBQR is unavailable; verify MSL-1 vs MSL-2 reflow profile compatibility |
| SN74CBTLV3253DR | Same silicon die in SOIC-16 package (9.90 mm × 3.90 mm); identical electrical specs but higher thermal resistance (RθJA = 102.5°C/W vs 116.6°C/W) | Better suited for low-density PCBs with ample copper pour; less space-constrained than SSOP but incompatible pin layout | Select when board real estate permits larger footprint and thermal management relies on heatsinking rather than airflow |
Compared with QS3253 and SN74CBTLV3253DR, the SN74CBTLV3253DBQR offers optimal balance of compact SSOP packaging, industry-standard MSL-2 reflow compliance, and full production longevity-making it preferred for new designs targeting volume manufacturing and 15-year lifecycle support.
Availability
SN74CBTLV3253DBQR is available at Aetrix Electronics and suitable for datacenter interconnects, wired networking switch fabrics, and industrial motor drive control requiring stable component supply across multi-year production programs.
Supply support for SN74CBTLV3253DBQR 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 and embedded processing technologies, with decades of expertise in high-speed interface solutions and industrial-grade reliability.
The SN74CBTLV3253DBQR belongs to TI's CBTLV (Crossbar Low-Voltage) logic family, engineered specifically for low-RON, high-bandwidth signal routing in enterprise, networking, and automation infrastructure.
FAQ
What is the maximum signal frequency supported by the SN74CBTLV3253DBQR?
The SN74CBTLV3253DBQR does not specify a hard upper frequency limit, but its 0.15 ns typical propagation delay and 5 Ω on-resistance support clean routing of signals up to ~1 GHz in well-designed PCB layouts. Performance depends on trace impedance matching and load capacitance; for 50 Ω systems with ≤30 pF load, rise times < 100 ps are preserved. Always validate with IBIS simulation and lab measurement for your specific application.
Does the SN74CBTLV3253DBQR require external pull-up resistors on OE pins?
Yes - to ensure high-impedance state during power-up/power-down, TI recommends tying 1OE and 2OE to VCC via pull-up resistors. The minimum value is determined by the driver's current-sinking capability; a 10 kΩ resistor is typical for microcontroller GPIOs. This prevents undefined switching states and eliminates glitch-induced current spikes during supply ramp-up.
Can the SN74CBTLV3253DBQR operate with VCC = 2.5 V and interface with 3.3 V I/O signals?
Yes - the SN74CBTLV3253DBQR supports rail-to-rail I/O operation up to 4.6 V regardless of VCC. With VCC = 2.5 V, it safely switches 3.3 V signals on both A and B ports without damage or level translation. Input thresholds (VIH/VIL) scale with VCC, so 3.3 V logic levels remain valid control inputs even at reduced supply voltage.
How does the Ioff feature protect systems during partial power-down?
The Ioff feature limits current to ≤15 µA when VCC = 0 V, preventing backflow from powered I/O lines into the unpowered device. In the SN74CBTLV3253DBQR, this isolates the A and B ports electrically, avoiding unintended biasing of downstream circuits and protecting against latch-up or thermal overstress in mixed-rail systems during hot-swap or graceful shutdown sequences.
Is the SN74CBTLV3253DBQR pin-compatible with other packages in the same family?
No - the SN74CBTLV3253DBQR (SSOP-16) has identical pin functions but different physical dimensions and thermal characteristics compared to SOIC-16 (D), TVSOP-16 (DGV), or VQFN-16 (RGY) variants. While logic behavior and pin numbering match across packages, PCB footprints and reflow profiles differ; migration requires layout revision and thermal validation per JEDEC MSL rating (MSL-2 for DBQ vs MSL-1 for D/DGV).
SN74CBTLV3253DBQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBTLV
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer/Demultiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- 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:
- 16-SSOP
SN74CBTLV3253DBQR FAQ
1.How can I place an order for SN74CBTLV3253DBQR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBTLV3253DBQR 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 SN74CBTLV3253DBQR reliable?
The price and inventory of SN74CBTLV3253DBQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBTLV3253DBQR is usually 5 days.
3.What payment methods are accepted for SN74CBTLV3253DBQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74CBTLV3253DBQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74CBTLV3253DBQR?
SN74CBTLV3253DBQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBTLV3253DBQR 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 SN74CBTLV3253DBQR?
For technical support, including SN74CBTLV3253DBQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBTLV3253DBQR requirements.
6.How does Aetrix verify that SN74CBTLV3253DBQR is sourced from the original manufacturer or authorized distributors?
All SN74CBTLV3253DBQR 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 SN74CBTLV3253DBQR meets industry standards.
7.What is the process for return or replacement of SN74CBTLV3253DBQR?
All SN74CBTLV3253DBQR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBTLV3253DBQR, 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 SN74CBTLV3253DBQR part is unused and in its original packaging.
Return procedure for SN74CBTLV3253DBQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74CBTLV3253DBQR 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…
