My Inquiry
My Account
Texas Instruments SN74LVCZ240APWT
- Part No.:
- SN74LVCZ240APWT
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVCZ240APWT.pdf
- Description:
- IC BUFFER INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,380
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVCZ240APWT from Texas Instruments is an octal buffer with power-up 3-state outputs, configured as two independent 4-channel banks each controlled by dedicated active-low output enable pins. It operates from 2.7V to 3.6V, supports 5.5V-tolerant inputs, delivers ≤6.5ns propagation delay at 3.3V, and enables hot-insertion via Ioff and power-up 3-state functionality in mixed-voltage systems such as 3.3V logic driving 5V-tolerant loads.
For engineers reviewing the SN74LVCZ240APWT datasheet, SN74LVCZ240APWT pinout, SN74LVCZ240APWT application, or SN74LVCZ240APWT equivalent, key selection criteria include its dual-bank 3-state control, overvoltage-tolerant inputs, ground bounce (VOLP) <0.8V and undershoot (VOHV) >2V at 3.3V, latch-up immunity >100mA, and compatibility with TSSOP-20 PCB layouts requiring minimal board space.
Technical Context
The SN74LVCZ240APWT implements eight CMOS inverters with Schmitt-trigger inputs and balanced push-pull 3-state outputs-four per bank, each bank enabled independently by OE1 (Pin 1) or OE2 (Pin 19). Its Ioff circuitry disables all outputs when VCC = 0V, preventing back-driving during partial power-down.
It supports mixed-mode signal operation: inputs accept up to 5.5V regardless of VCC (2.7–3.6V), enabling direct interfacing between 3.3V controllers and 5V peripherals without level shifters. Output drive strength is ±24mA at 3V, with VOL ≤0.55V and VOH ≥2.2V under load, and thermal metrics (RθJA = 120.3°C/W) confirm suitability for compact industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7V to 3.6V - defines valid operating range; outside this, timing and logic integrity not guaranteed. |
| Input Voltage Range | 0V to 5.5V - allows 5V signals into 3.3V system without external level translation. |
| Max Propagation Delay | 6.5ns at VCC = 3.3V - ensures sub-150MHz signal routing feasibility with margin. |
| Output Drive Current | ±24mA at VCC = 3V - supports driving moderate capacitive loads (≤50pF) or multiple TTL inputs. |
| VOL / VOH | 0.55V / 2.2V at IOL/IOH = 24mA - guarantees noise margins >0.7V in 3.3V LVTTL environments. |
| Ioff Leakage | ±5μA at VI/VO = 5.5V - prevents bus contention during hot-swap or power sequencing. |
| Latch-up Immunity | >100mA per JESD 78 - meets industrial robustness requirements for transient fault conditions. |
Pinout & Package
Packaged in a 20-pin TSSOP (PW), the SN74LVCZ240APWT measures 6.5mm × 6.4mm with a body size of 6.5mm × 4.4mm, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low bank enable inputs - assert low to activate respective 4-channel output bank. |
| 2, 3, 4, 7, 11, 12, 13, 16 | A1–A4, Y1–Y4 (Bank 1); A1–A4, Y1–Y4 (Bank 2) | Input/output pairs - Bank 1 uses Pins 2/18, 3/17, 4/16, 7/15; Bank 2 uses Pins 11/14, 12/13, 13/12, 16/11 (note cross-wired layout). |
| 10 | GND | Ground reference - must be low-impedance connection to minimize ground bounce (VOLP). |
| 20 | VCC | Positive supply - requires local 0.1μF bypass capacitor per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Power-up 3-State | Outputs remain high-impedance until VCC stabilizes - eliminates bus contention during power sequencing. |
| 5.5V Input Tolerance | Accepts 5V signals at any VCC (2.7–3.6V) - eliminates need for discrete level shifters in mixed-voltage interfaces. |
| Low Ground Bounce | VOLP < 0.8V at 3.3V - reduces noise coupling into adjacent signals and improves signal integrity on shared ground planes. |
| Ioff Protection | Blocks current flow when VCC = 0V - enables safe hot insertion into live backplanes or modular systems. |
| Dual Independent Banks | Two OE-controlled 4-channel groups - allows selective enable/disable of subsystems (e.g., sensor vs. actuator buses) without software overhead. |
Applications
| Industrial Sensor Interface | Embedded Microcontroller Bus Expansion |
|---|---|
Use Scenario: Isolating and buffering analog-to-digital converter (ADC) status lines and control signals in a factory-floor PLC module. IC Role / Device Role / Timing Role: Octal buffer providing noise-immune signal conditioning and 3-state isolation between 3.3V MCU and 5V-tolerant ADC peripherals. Use Value: Enables reliable communication across noisy industrial environments while maintaining <6.5ns timing alignment across all 8 channels. |
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 microcontroller to drive multiple LED indicators and status displays. IC Role / Device Role / Timing Role: Level-shifting buffer translating 3.3V MCU outputs to 5V-compatible LED drivers with simultaneous 3-state disable capability. Use Value: Reduces firmware complexity by eliminating per-pin software control - single OE pin disables entire bank during sleep mode. |
| Automotive Body Control Module | Test Equipment Signal Routing |
Use Scenario: Driving multiplexed dashboard display segments and door-lock actuator signals in a 12V automotive body controller. IC Role / Device Role / Timing Role: Dual-bank buffer isolating MCU I/O from high-current loads while supporting hot-swap diagnostics via Ioff. Use Value: Ensures ESD robustness (±2000V HBM) and latch-up immunity (>100mA) required for automotive qualification. |
Use Scenario: Routing digital test patterns from FPGA-based pattern generator to multiple DUT inputs in automated test equipment (ATE). IC Role / Device Role / Timing Role: High-speed signal fanout device with matched propagation delays (<6.5ns) across all channels for skew-critical stimulus delivery. Use Value: Maintains sub-nanosecond inter-channel skew essential for synchronized multi-pin testing at >100MHz rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer with 3-state applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC240APW | Lacks Z-series features: no power-up 3-state, no Ioff, no 5.5V input tolerance - max VI = VCC + 0.5V. | Suitable only in single-supply 3.3V systems with no hot-swap or mixed-voltage requirements. | Select SN74LVC240APW only if cost sensitivity outweighs robustness needs and system lacks voltage translation or power sequencing. |
| 74LVCZ240ADTR2G | Identical Z-series functionality but in SOIC-20 (DW) package - larger footprint (12.8mm × 10.3mm), higher RθJA (114.8°C/W). | Better thermal mass for high-duty-cycle operation; less suitable for ultra-compact PCBs. | Choose 74LVCZ240ADTR2G when board space permits and thermal derating above 70°C is required. |
Compared with SN74LVC240APW, the SN74LVCZ240APWT adds critical system-level reliability features (Ioff, power-up 3-state, 5.5V tolerance) at minimal cost premium; versus 74LVCZ240ADTR2G, it trades thermal margin for 45% smaller area and improved high-frequency signal integrity due to lower parasitic capacitance in TSSOP.
Availability
SN74LVCZ240APWT is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded microcontroller bus expansion, and automotive body control modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN74LVCZ240APWT 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog, power management, and logic ICs.
The SN74LVCZ240APWT belongs to TI's LVCZ advanced logic family, designed specifically for robust, mixed-voltage digital interfacing in industrial, automotive, and communications equipment where power sequencing, ESD resilience, and signal integrity are critical.
FAQ
What is the maximum input voltage the SN74LVCZ240APWT can tolerate?
The SN74LVCZ240APWT accepts input voltages up to 5.5V regardless of VCC setting (2.7V–3.6V), enabling direct connection to 5V logic or sensors without external level shifters. This overvoltage tolerance is specified in the Recommended Operating Conditions table and verified across temperature (–40°C to 85°C). Exceeding 5.5V risks damage per Absolute Maximum Ratings.
Does the SN74LVCZ240APWT support hot insertion?
Yes, the SN74LVCZ240APWT supports hot insertion via two integrated features: Ioff circuitry disables all outputs when VCC = 0V, preventing back-current flow, and power-up 3-state ensures outputs remain high-impedance until VCC reaches valid operating range. Both functions are tested per JEDEC standards and documented in Section 7.3.2 and 7.3.3 of the SN74LVCZ240APWT datasheet.
What is the propagation delay of the SN74LVCZ240APWT at 3.3V?
The maximum propagation delay (tpd) of the SN74LVCZ240APWT is 6.5ns at VCC = 3.3V ± 0.3V, as specified in the Switching Characteristics table (Section 5.6). This value represents the worst-case delay from input transition to output transition under loaded conditions (CL = 50pF, RL = 500Ω) and is validated across process, voltage, and temperature corners.
Can the SN74LVCZ240APWT drive a 50pF load reliably?
Yes, the SN74LVCZ240APWT is characterized to drive loads ≤50pF while meeting all datasheet specifications including propagation delay, VOL/VOH, and switching characteristics. TI's Application and Implementation section explicitly states this 50pF limit for full compliance; exceeding it degrades timing margins and may increase ground bounce (VOLP).
What package type does the SN74LVCZ240APWT use?
The SN74LVCZ240APWT uses a 20-pin TSSOP (Thin Shrink Small Outline Package), designated PW in TI's packaging nomenclature. Its dimensions are 6.5mm × 6.4mm (including pins) with a body size of 6.5mm × 4.4mm, making it suitable for space-constrained PCB designs requiring fine-pitch surface-mount assembly.
SN74LVCZ240APWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCZ
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74LVCZ240APWT FAQ
1.How can I place an order for SN74LVCZ240APWT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCZ240APWT 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 SN74LVCZ240APWT reliable?
The price and inventory of SN74LVCZ240APWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCZ240APWT is usually 5 days.
3.What payment methods are accepted for SN74LVCZ240APWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCZ240APWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVCZ240APWT?
SN74LVCZ240APWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCZ240APWT 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 SN74LVCZ240APWT?
For technical support, including SN74LVCZ240APWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCZ240APWT requirements.
6.How does Aetrix verify that SN74LVCZ240APWT is sourced from the original manufacturer or authorized distributors?
All SN74LVCZ240APWT 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 SN74LVCZ240APWT meets industry standards.
7.What is the process for return or replacement of SN74LVCZ240APWT?
All SN74LVCZ240APWT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCZ240APWT, 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 SN74LVCZ240APWT part is unused and in its original packaging.
Return procedure for SN74LVCZ240APWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVCZ240APWT Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
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…
