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NXP Semiconductors 74CBTLV3245DS,118
- Part No.:
- 74CBTLV3245DS,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
74CBTLV3245DS,118.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,121
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Product details
Overview
74CBTLV3245DS,118 from Nexperia is an 8-bit bus switch IC with single output enable (OE) control, designed for high-speed bidirectional signal routing in low-voltage digital systems. It operates from 2.3 V to 3.6 V, features 5 Ω typical ON-resistance at 3.3 V, supports rail-to-rail switching, and includes IOFF circuitry for partial power-down protection. It is used in memory expansion interfaces and hot-swap data path isolation.
For engineers reviewing the 74CBTLV3245DS,118 datasheet, 74CBTLV3245DS,118 pinout, 74CBTLV3245DS,118 application, or 74CBTLV3245DS,118 equivalent, key selection criteria include guaranteed operation from −40 °C to +125 °C, sub-0.31 ns propagation delay at 3.3 V, Schmitt-trigger input tolerance for slow edges, and compliance with JEDEC JESD8-5 and JESD8-B standards.
Technical Context
The 74CBTLV3245DS,118 implements eight independent analog/digital bidirectional MOSFET switches controlled by a single active-low OE input. Each switch exhibits low-impedance conduction (RON ≤ 7.0 Ω typical at VCC = 3.3 V, ISW = 64 mA) and high-impedance isolation (IS(OFF) ≤ ±1 μA) when disabled.
Its IOFF functionality ensures leakage current remains below ±50 μA when VCC = 0 V and I/O pins are biased between 0 V and 3.6 V, enabling safe back-drive prevention during system power sequencing. Schmitt-trigger action on OE provides hysteresis of ≥0.3 V, accommodating slow-rising control signals without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.3 V to 3.6 V - compatible with 2.5 V and 3.3 V logic domains without level translation |
| ON resistance (RON) | ≤7.0 Ω typical at VCC = 3.3 V, ISW = 64 mA - enables minimal signal attenuation in high-speed data paths |
| Propagation delay (tpd) | ≤0.31 ns max at VCC = 3.0–3.6 V - preserves signal integrity in >1 GHz digital buses |
| IOFF leakage | ≤±50 μA at VCC = 0 V, VI/VO = 0–3.6 V - prevents damaging back-current during partial power-down |
| Operating temperature | −40 °C to +125 °C - qualified for under-hood automotive and industrial control applications |
| ESD rating (HBM) | >2000 V - meets JEDEC JESD22-A114F for robust handling in manufacturing environments |
| Switch capacitance (CS(ON)) | 14.3 pF typical - minimizes loading on high-frequency source signals |
Pinout & Package
74CBTLV3245DS,118 is housed in a plastic shrink small outline package (SSOP20), SOT724-1, with 20 leads, 3.9 mm body width, and 0.635 mm lead pitch. The package is RoHS-compliant and moisture-sensitive level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | nc | No internal connection - must be left unconnected or tied to GND per layout best practice |
| 2–9 | A1–A8 | Data I/O port A - bidirectional signal interface for one side of the switched bus |
| 10 | GND | Ground reference - primary return path for supply and signal currents |
| 11–18 | B1–B8 | Data I/O port B - bidirectional signal interface for the opposite side of the switched bus |
| 19 | OE | Active-low output enable - controls all eight switches simultaneously; Schmitt-trigger input |
| 20 | VCC | Positive supply - powers internal switch circuitry and defines logic threshold levels |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports full 0 V to VCC signal swing on both A and B ports - eliminates clipping in mixed-signal paths |
| IOFF partial power-down | Blocks destructive backflow current when VCC = 0 V - enables live insertion and hot-swap capability |
| Schmitt-trigger OE input | Hysteresis ≥0.3 V - tolerates slow-rising/falling enable signals without metastability or chatter |
| Low ON-state capacitance | CS(ON) = 14.3 pF typical - reduces signal distortion and timing skew in high-speed parallel buses |
| JEDEC-compliant voltage ranges | JESD8-5 (2.3–2.7 V) and JESD8-B/JESD36 (2.7–3.6 V) - ensures interoperability across legacy and modern logic families |
Applications
| Memory Expansion Interface | Hot-Swap Data Path Isolation |
|---|---|
|
Use Scenario: Adding external SRAM or Flash memory to a microcontroller without altering the main address/data bus timing. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating memory-side signals until configuration completes and power stabilizes. Use Value: Prevents bus contention during boot-up; enables dynamic memory mapping via OE-controlled gating with <0.31 ns added delay. |
Use Scenario: Safely inserting or removing peripheral modules (e.g., sensor cards) while host system remains powered. IC Role / Device Role / Timing Role: Signal path gate that disconnects module I/O before physical insertion and re-enables only after stable power and handshake. Use Value: IOFF blocks back-current from module to host during plug-in; Schmitt-trigger OE rejects noisy insertion transients. |
| PCI Express Lane Multiplexing | Test Access Port (TAP) Signal Routing |
|
Use Scenario: Sharing limited PCIe lanes between two high-speed peripherals (e.g., NVMe SSD and GPU) using software-controlled arbitration. IC Role / Device Role / Timing Role: Low-capacitance, low-RON analog switch enabling transparent lane reassignment without retiming or buffering. Use Value: 14.3 pF CS(ON) and ≤7.0 Ω RON preserve signal integrity up to 2.5 GT/s; sub-nanosecond tpd avoids timing budget violations. |
Use Scenario: Routing JTAG signals (TCK, TMS, TDI, TDO) between multiple ASICs or FPGAs on a shared test bus. IC Role / Device Role / Timing Role: Bidirectional switch isolating unused TAP chains to prevent signal reflections and crosstalk during boundary-scan testing. Use Value: 5 Ω RON ensures minimal TCK edge degradation; rail-to-rail support accommodates 1.8 V or 3.3 V JTAG voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3245PWR | Same 8-bit bus switch function, identical RON and tpd specs, but in TSSOP20 (SOT360-1) package with 4.4 mm body width. | Requires PCB footprint change due to wider package and different thermal pad layout; no exposed thermal pad. | Select when board space allows larger body width and standard TSSOP assembly processes are preferred. |
| 74LVC2G66GW,125 | 2-channel variant with higher RON (≤12 Ω), lower integration (2 vs. 8 channels), and no IOFF or Schmitt-trigger inputs. | Lacks partial power-down and noise-immune control - unsuitable for hot-swap or mixed-rail systems requiring back-drive protection. | Choose only for low-channel-count, cost-sensitive designs where IOFF and Schmitt-trigger are not required. |
Compared with SN74CBTLV3245PWR, the 74CBTLV3245DS,118 offers identical electrical performance in a narrower SSOP20 footprint ideal for dense layouts; versus 74LVC2G66GW,125, it delivers 4× channel count, guaranteed IOFF, and Schmitt-trigger robustness essential for industrial and automotive signal routing.
Availability
74CBTLV3245DS,118 is available at Aetrix Electronics and suitable for memory expansion interfaces, hot-swap data path isolation, PCIe lane multiplexing, and JTAG signal routing requiring stable component supply across extended temperature ranges.
Supply support for 74CBTLV3245DS,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 leader in high-performance discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The 74CBTLV3245DS,118 belongs to Nexperia's advanced bus switch product line, engineered for low-latency, rail-to-rail signal routing in power-aware digital systems with strict hot-swap and partial power-down requirements.
FAQ
What is the maximum operating temperature range for the 74CBTLV3245DS,118?
The 74CBTLV3245DS,118 is fully specified from −40 °C to +125 °C, making it suitable for under-hood automotive applications and industrial control environments where ambient temperatures exceed standard commercial limits. This rating applies across all recommended supply voltages (2.3 V to 3.6 V) and is validated per JEDEC JESD22-A104.
Does the 74CBTLV3245DS,118 support partial power-down operation?
Yes, the 74CBTLV3245DS,118 integrates IOFF circuitry that actively disables all eight switch channels when VCC = 0 V, limiting backflow current to ≤±50 μA even if A or B port pins are biased between 0 V and 3.6 V. This feature is critical for hot-swap and live-insertion applications where subsystems power up/down independently.
What is the typical ON-resistance of the 74CBTLV3245DS,118 at 3.3 V supply?
At VCC = 3.3 V and ISW = 64 mA, the 74CBTLV3245DS,118 exhibits a typical ON-resistance (RON) of 4.0 Ω, with a maximum of 7.0 Ω over temperature (−40 °C to +125 °C). This low RON ensures minimal voltage drop and signal attenuation in high-speed data paths such as memory buses and PCIe lane sharing.
Is the OE input of the 74CBTLV3245DS,118 compatible with slow-rising control signals?
Yes, the OE input incorporates Schmitt-trigger action with ≥0.3 V hysteresis, allowing reliable switching even with input rise/fall times up to 200 ns/V. This design eliminates sensitivity to noise and slow edges common in system-level enable signals, ensuring glitch-free bus switching without external debouncing.
What package type is used for the 74CBTLV3245DS,118?
The 74CBTLV3245DS,118 uses the SSOP20 (SOT724-1) package: a plastic shrink small outline package with 20 leads, 3.9 mm body width, and 0.635 mm lead pitch. It is RoHS-compliant, halogen-free, and rated MSL1 - requiring no bake prior to reflow soldering.
74CBTLV3245DS,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74CBTLV
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SSOP
74CBTLV3245DS,118 FAQ
1.How can I place an order for 74CBTLV3245DS,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV3245DS,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 74CBTLV3245DS,118 reliable?
The price and inventory of 74CBTLV3245DS,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3245DS,118 is usually 5 days.
3.What payment methods are accepted for 74CBTLV3245DS,118?
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4.How is shipping managed for 74CBTLV3245DS,118?
74CBTLV3245DS,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV3245DS,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 74CBTLV3245DS,118?
For technical support, including 74CBTLV3245DS,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3245DS,118 requirements.
6.How does Aetrix verify that 74CBTLV3245DS,118 is sourced from the original manufacturer or authorized distributors?
All 74CBTLV3245DS,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 74CBTLV3245DS,118 meets industry standards.
7.What is the process for return or replacement of 74CBTLV3245DS,118?
All 74CBTLV3245DS,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3245DS,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 74CBTLV3245DS,118 part is unused and in its original packaging.
Return procedure for 74CBTLV3245DS,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLV3245DS,118 Tags
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TC7SB3157CFU,LF(CT
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