My Inquiry
My Account
Nexperia USA Inc. 74CBTLVD3244PW,118
- Part No.:
- 74CBTLVD3244PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74CBTLVD3244PW,118.pdf
- Description:
- IC BUS SWITCH 4 X 1:1 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,836
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74CBTLVD3244PW,118 from Nexperia is an 8-bit level-shifting bus switch with dual 4-channel architecture, two independent active-low output enables (1OE, 2OE), 5 Ω typical ON-resistance at 3.3 V, rail-to-rail signal switching, and IOFF partial power-down protection. It operates from 3.0 V to 3.6 V across –40 °C to +125 °C and is used in high-speed interconnects between mixed-voltage domains in server memory subsystems.
For engineers reviewing the 74CBTLVD3244PW,118 datasheet, 74CBTLVD3244PW,118 pinout, 74CBTLVD3244PW,118 application, or 74CBTLVD3244PW,118 equivalent, key selection criteria include guaranteed sub-0.22 ns propagation delay, Schmitt-triggered enable inputs for noise immunity, TSSOP20 package compatibility with AOI inspection, and verified IOFF leakage < ±50 μA at VCC = 0 V.
Technical Context
This device implements a dual 4-pole single-throw analog bus switch topology, where each OE input controls four bidirectional A↔B channels independently. Switch conduction is governed by CMOS transmission gate structure with no internal level translation circuitry - voltage translation occurs passively via I/O port biasing.
Functional behavior follows strict enable-gated pass-through: when nOE = LOW, the corresponding four A/B pairs conduct with RON ≤ 10.0 Ω (max) and capacitance CS(ON) = 9.0 pF (typ); when nOE = HIGH, outputs enter high-impedance OFF-state with CS(OFF) = 2.5 pF (typ) and IS(OFF) ≤ ±20 μA (max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 3.6 V - defines valid operating window for logic compatibility with 3.3 V LVTTL/LVCMOS systems |
| ON Resistance | ≤10.0 Ω (max) at 3.6 V, 64 mA - ensures minimal voltage drop (< 640 mV) under full load, preserving signal integrity |
| Propagation Delay | ≤0.22 ns (max) - supports >1 GHz data rates in point-to-point or stubbed bus topologies |
| IOFF Leakage | ≤±50 μA at VCC = 0 V - prevents backflow current during hot-swap or partial power-down sequences |
| Operating Temperature | –40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for robust board-level handling |
| Switch Capacitance | CS(ON) = 9.0 pF (typ), CS(OFF) = 2.5 pF (typ) - minimizes loading on high-speed source and load nodes |
Pinout & Package
TSSOP20 (SOT360-1) package: plastic thin shrink small outline, 20 leads, 4.4 mm body width, 0.65 mm pitch, side-wettable flanks for AOI-compatible solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enable inputs - each controls four dedicated A/B channel pairs; Schmitt-triggered for slow-edge tolerance |
| 2, 4, 6, 8 | 1A1–1A4 | Port A data I/O for first switch bank - bidirectional, rail-to-rail compatible with 0 V to VCC swing |
| 11, 13, 15, 17 | 2A1–2A4 | Port A data I/O for second switch bank - electrically isolated from first bank except shared VCC/GND |
| 18, 16, 14, 12 | 1B1–1B4 | Port B data I/O for first switch bank - connects to 1A1–1A4 when 1OE = LOW |
| 9, 7, 5, 3 | 2B1–2B4 | Port B data I/O for second switch bank - connects to 2A1–2A4 when 2OE = LOW |
| 10 | GND | Ground reference (0 V) - required return path for all internal circuitry and I/O current |
| 20 | VCC | Positive supply - powers internal control logic and switch transistors; must be decoupled locally |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail switching | Supports full 0 V to VCC signal swing on all A/B ports - enables interoperability between 3.3 V and lower-voltage logic without external biasing |
| IOFF partial power-down | Disables output leakage paths when VCC = 0 V - eliminates back-current risk during hot-plug or multi-rail sequencing |
| Schmitt-trigger enable inputs | Hysteresis ≥ 0.5 V on 1OE/2OE - rejects noise on control lines and tolerates slow rise/fall times up to 200 ns/V |
| Dual independent banks | Two sets of four switches, each controlled by separate OE - allows selective isolation of memory vs. peripheral buses in SoC interfaces |
| Low dynamic loading | CS(ON) = 9.0 pF (typ), tpd ≤ 0.22 ns - preserves signal edge rate and reduces crosstalk in dense PCB layouts |
Applications
| DDR Memory Interposer | PCIe Gen3 Signal Isolation |
|---|---|
Use Scenario: Inserted between DDR4 controller and DIMM slots to isolate failing modules while maintaining bus continuity. IC Role / Device Role / Timing Role: Bidirectional passive switch enabling/disabling 8-bit DQ lanes per OE control; zero-latency signal path preserves tAC timing budget. Use Value: Enables field-replaceable memory module architecture without requiring re-timing or voltage translation ICs. |
Use Scenario: Placed on PCIe Gen3 x4 add-in card edge connector to isolate auxiliary lanes during hot-plug detection. IC Role / Device Role / Timing Role: Low-capacitance switch bank isolating unused lanes while maintaining impedance continuity on active lanes. Use Value: Reduces insertion loss variation and maintains < 0.22 ns skew across enabled lanes for compliance with PCIe Gen3 eye diagram requirements. |
| Industrial PLC Backplane | FPGA I/O Voltage Translation |
Use Scenario: Used in modular I/O chassis to selectively connect sensor/actuator modules to central controller over shared 8-bit parallel bus. IC Role / Device Role / Timing Role: Dual-bank switch providing independent enable control per module slot; supports hot-swap via IOFF. Use Value: Eliminates need for discrete MOSFET arrays and level shifters, reducing BOM count and layout area by >40%. |
Use Scenario: Bridges 1.8 V FPGA I/O banks to 3.3 V legacy peripherals in test equipment control logic. IC Role / Device Role / Timing Role: Passive level shifter using rail-to-rail conduction - no direction control or power supply required beyond VCC. Use Value: Achieves < 10 mV pass-voltage error at 24 mA load, avoiding signal degradation that would trigger setup/hold violations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3244PWR | Higher RON (max 15 Ω), wider VCC range (4.5–5.5 V), no IOFF, –40 °C to +85 °C only | Requires external hot-swap protection; unsuitable for partial power-down systems | Select only if operating at 5 V and IOFF is not required |
| 74LVC2G66DP,125 | Single-channel, 3.3 V only, RON ≤ 12 Ω, no dual-bank control, smaller XSON8 package | Lacks 8-bit parallel control; requires four devices to match 74CBTLVD3244PW,118 functionality | Use only for low-pin-count, space-constrained designs where channel independence outweighs integration benefit |
Compared with SN74CBT3244PWR and 74LVC2G66DP,125, the 74CBTLVD3244PW,118 uniquely combines dual 4-bit bank control, guaranteed IOFF, and industrial temperature range in a single TSSOP20 package - making it the only option for thermally demanding, hot-pluggable 8-bit interconnects.
Availability
74CBTLVD3244PW,118 is available at Aetrix Electronics and suitable for DDR memory interposers, PCIe Gen3 signal isolation, and industrial PLC backplanes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74CBTLVD3244PW,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in high-volume applications.
The 74CBTLVD series targets high-speed digital interconnects in computing and industrial systems, emphasizing ultra-low propagation delay, rail-to-rail operation, and robust partial-power-down capability.
FAQ
What is the maximum allowable signal voltage swing on the A/B ports?
The 74CBTLVD3244PW,118 supports rail-to-rail switching: signals may swing from 0 V to VCC (3.0 V to 3.6 V) on all A and B I/O terminals. Exceeding VCC or going below GND violates absolute maximum ratings and risks latch-up or permanent damage per Table 4.
Can 1OE and 2OE be tied together for unified 8-bit control?
Yes - connecting 1OE and 2OE to a common active-low control signal enables or disables all eight channels simultaneously. This configuration maintains full electrical isolation between banks but sacrifices independent bank control, which is required for applications like memory module sparing.
Does the device require external pull-up or pull-down resistors on OE pins?
No - the OE inputs feature integrated Schmitt triggers with defined VIH (≥2.0 V) and VIL (≤0.9 V) thresholds. Direct connection to 3.3 V logic outputs suffices; adding external resistors adds unnecessary node capacitance and degrades enable/disable timing.
How does IOFF behave when VCC is ramping during power-up?
IOFF activates automatically when VCC drops below ~0.8 V, clamping leakage to ≤±50 μA. During power-up, IOFF remains inactive until VCC exceeds ~1.5 V; full functional operation begins only after VCC reaches 3.0 V per Table 5 - no special sequencing is required.
74CBTLVD3244PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 4 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74CBTLVD3244PW,118 FAQ
1.How can I place an order for 74CBTLVD3244PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLVD3244PW,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 74CBTLVD3244PW,118 reliable?
The price and inventory of 74CBTLVD3244PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLVD3244PW,118 is usually 5 days.
3.What payment methods are accepted for 74CBTLVD3244PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLVD3244PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLVD3244PW,118?
74CBTLVD3244PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLVD3244PW,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 74CBTLVD3244PW,118?
For technical support, including 74CBTLVD3244PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLVD3244PW,118 requirements.
6.How does Aetrix verify that 74CBTLVD3244PW,118 is sourced from the original manufacturer or authorized distributors?
All 74CBTLVD3244PW,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 74CBTLVD3244PW,118 meets industry standards.
7.What is the process for return or replacement of 74CBTLVD3244PW,118?
All 74CBTLVD3244PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLVD3244PW,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 74CBTLVD3244PW,118 part is unused and in its original packaging.
Return procedure for 74CBTLVD3244PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLVD3244PW,118 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
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
