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Nexperia USA Inc. 74CBTLV3245PW,118
- Part No.:
- 74CBTLV3245PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74CBTLV3245PW,118.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:922
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Product details
Overview
74CBTLV3245PW,118 from Nexperia is an 8-bit CMOS bus switch with active-low output enable (OE), designed for high-speed bidirectional signal routing in low-voltage digital systems. It features 5 Ω typical ON-state resistance, rail-to-rail switching across 2.3 V–3.6 V supply, and IOFF partial power-down protection. Used in memory address/data bus isolation, hot-swap I/O buffering, and level-translating interconnects.
For engineers reviewing the 74CBTLV3245PW,118 datasheet, 74CBTLV3245PW,118 pinout, 74CBTLV3245PW,118 application, or 74CBTLV3245PW,118 equivalent, key selection criteria include guaranteed sub-8 Ω RON at 3.3 V, ±128 mA switch current rating, Schmitt-trigger OE input for noise immunity, and TSSOP20 package compatibility with high-density PCB layouts.
Technical Context
This device implements eight independent single-pole single-throw (SPST) analog switches controlled by a common active-low OE input. Each channel conducts bidirectionally with no inherent directionality-signal flow depends solely on voltage potential between A and B ports.
Its IOFF circuitry ensures <±10 μA power-off leakage when VCC = 0 V, enabling safe back-drive prevention during partial system power-down. Schmitt-trigger action on OE provides hysteresis (typ. 0.3 V) to tolerate slow-rising control signals without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.3 V to 3.6 V - supports dual-supply domain bridging and low-power 2.5 V/3.3 V logic interfaces |
| ON-resistance (RON) | Typ. 4.0 Ω at VCC = 3.3 V, ISW = 64 mA - enables minimal signal attenuation and <0.2 ns propagation delay in high-speed buses |
| Switch current | ±128 mA per channel - sufficient for driving 50 Ω transmission lines or fan-out to multiple CMOS inputs |
| IOFF leakage | ±10 μA max at VCC = 0 V - prevents damaging back-current during hot-insertion or mixed-power-state operation |
| Enable/disable time | Typ. 3.0 ns / 3.4 ns at VCC = 3.3 V - allows cycle-accurate gating of burst-mode data transfers |
| Operating temperature | −40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications |
| ESD rating | HBM >2000 V, CDM >1000 V - robust enough for manual handling and board-level assembly without special ESD controls |
Pinout & Package
TSSOP20 (SOT360-1) package: plastic thin shrink small outline, 20-pin, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height. Pin 1 index located at top-left corner; thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (n.c.) | No connect | Unused mechanical pad; no electrical function or routing required |
| 2–9 (A1–A8) | A-port data I/O | Bidirectional signal terminal paired with corresponding Bn; connects directly to source-side bus |
| 10 (GND) | Ground reference | Primary 0 V return path for all internal circuitry and switch current |
| 11–18 (B8–B1) | B-port data I/O | Bidirectional signal terminal paired with corresponding An; connects directly to sink-side bus |
| 19 (OE) | Output enable (active LOW) | Asserting LOW enables all eight switches; HIGH places all channels in high-impedance OFF state |
| 20 (VCC) | Positive supply | Single power rail for logic control and switch conduction; powers internal Schmitt trigger and IOFF circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports full VCC-to-GND signal swing on both A and B ports without level-shifting circuitry |
| IOFF partial power-down | Automatically disables switch conduction and limits leakage to ±10 μA when VCC = 0 V |
| Schmitt-trigger OE input | Provides 0.3 V hysteresis to reject noise on enable control lines and ensure clean channel activation |
| Low dynamic power | ICC < 50 μA at VCC = 3.6 V with all inputs static - reduces quiescent load on supply rails |
| High noise immunity | VIH/VIL thresholds defined across full VCC range (e.g., VIH = 2.0 V min at VCC = 3.3 V) ensure reliable logic recognition |
Applications
| Memory Bus Isolation | Hot-Swap I/O Buffering |
|---|---|
|
Use Scenario: Isolating DRAM address/data lines from CPU during memory reconfiguration or error recovery. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling/disabling physical connection between memory controller and SDRAM banks under software control. Use Value: Prevents bus contention and data corruption during live memory remapping; leverages <3 ns enable timing for cycle-accurate gating. |
Use Scenario: Safely inserting/removing peripheral modules in powered-backplane systems like industrial PLC racks. IC Role / Device Role / Timing Role: Signal gate placed between backplane bus and module I/O to block current flow until power sequencing completes. Use Value: IOFF protection eliminates risk of back-driving powered-down modules; 5 Ω RON minimizes insertion loss on 3.3 V LVCMOS signals. |
| Level-Translating Interconnect | Test Access Multiplexing |
|
Use Scenario: Connecting 2.5 V FPGA I/O banks to 3.3 V legacy peripherals without dedicated level shifters. IC Role / Device Role / Timing Role: Passive bidirectional switch allowing voltage-domain translation via clamping diodes in downstream receivers. Use Value: Eliminates need for active translators; rail-to-rail conduction preserves signal integrity across mixed-voltage boundaries. |
Use Scenario: Routing JTAG or boundary-scan signals between multiple ASICs on a shared test bus. IC Role / Device Role / Timing Role: Channel selector enabling one test controller to access individual device TAP controllers sequentially. Use Value: Sub-0.3 ns propagation delay ensures timing compliance with IEEE 1149.1; low capacitance (<6 pF OFF-state) maintains signal edge rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3245PWR | TI part with identical 8-bit bus switch function but higher RON (typ. 6 Ω at 3.3 V) and wider temp range (−40 °C to +125 °C same); no IOFF support | Lacks IOFF - unsuitable for partial power-down systems requiring back-drive prevention | Select only if IOFF is unnecessary and TI supply chain preference exists |
| 74LVC2G66DP,125 | Nexperia dual SPST switch in TSSOP8; lower channel count, 5.5 Ω RON, same VCC range and IOFF | Requires four devices to match 74CBTLV3245PW,118's 8-channel capacity - increases board area and BOM count | Use only for space-constrained designs needing fewer than 4 channels |
Compared with SN74CBT3245PWR and 74LVC2G66DP,125, the 74CBTLV3245PW,118 uniquely combines 8-channel density, sub-5 Ω RON, and certified IOFF protection-making it optimal for compact, mixed-power-state digital interconnects where signal fidelity and power sequencing safety are co-critical.
Availability
74CBTLV3245PW,118 is available at Aetrix Electronics and suitable for memory bus isolation, hot-swap I/O buffering, and level-translating interconnects requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for 74CBTLV3245PW,118 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74CBTLV series targets low-voltage, high-speed digital interconnect applications-designed specifically for signal integrity preservation and power-aware system architecture in dense PCB environments.
FAQ
Can 74CBTLV3245PW,118 operate with 1.8 V logic levels?
No. The device requires minimum VCC = 2.3 V per datasheet Section 8. Operation below this violates recommended conditions and degrades RON, timing, and noise margins. For 1.8 V systems, consider the 74LVC2G66 or similar 1.65 V–5.5 V switches.
Is the thermal pad on the TSSOP20 package electrically connected?
No. Per datasheet Section 5.1 and Figure 16, the exposed pad (pin 1 index area) has no electrical function. It may remain floating or be connected to GND for thermal improvement, but soldering is optional and imposes no electrical requirement.
What happens to signal integrity when OE is toggled mid-data transfer?
Propagation delay remains <0.31 ns (typ.), and enable/disable times are <8 ns (max). However, toggling OE during active signal transition causes momentary high-impedance break-potentially introducing glitches. Use OE only during bus idle periods or with protocol-level handshaking.
Does 74CBTLV3245PW,118 support AC-coupled differential signaling?
No. It is a single-ended CMOS bus switch optimized for DC-coupled digital signals. Its 5 Ω RON and 14.3 pF ON-capacitance are mismatched for differential impedance control; use dedicated high-speed differential switches (e.g., NX3DV221) for PCIe or USB applications.
74CBTLV3245PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBTLV
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 8 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74CBTLV3245PW,118 FAQ
1.How can I place an order for 74CBTLV3245PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV3245PW,118 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 74CBTLV3245PW,118 reliable?
The price and inventory of 74CBTLV3245PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3245PW,118 is usually 5 days.
3.What payment methods are accepted for 74CBTLV3245PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV3245PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV3245PW,118?
74CBTLV3245PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV3245PW,118 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 74CBTLV3245PW,118?
For technical support, including 74CBTLV3245PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3245PW,118 requirements.
6.How does Aetrix verify that 74CBTLV3245PW,118 is sourced from the original manufacturer or authorized distributors?
All 74CBTLV3245PW,118 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 74CBTLV3245PW,118 meets industry standards.
7.What is the process for return or replacement of 74CBTLV3245PW,118?
All 74CBTLV3245PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3245PW,118, 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 74CBTLV3245PW,118 part is unused and in its original packaging.
Return procedure for 74CBTLV3245PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLV3245PW,118 Tags
-
SN74HC138DR
Texas Instruments
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TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
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74CBTLV3257PW,118
Nexperia USA Inc.
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SN74CBTLV3257PWR
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74HC154BQ,118
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P3S0200GMX
NXP USA Inc.
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SN74CB3Q3245PWR
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SN74CB3Q3257RGYR
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TCA9543APWR
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TCA9546APWR
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SN74HC138N
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