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Texas Instruments SN74LVTZ244PWR
- Part No.:
- SN74LVTZ244PWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVTZ244PWR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,263
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Product details
Overview
SN74LVTZ244PWR from Texas Instruments is an octal 3.3-V bus buffer/driver with two independent 4-bit sections, 3.3-V VCC operation, mixed-mode 5-V input tolerance, and bus-hold inputs eliminating external pullups. It supports industrial temperature range (−40°C to 85°C) and is packaged in a 20-pin TSSOP (PW) for space-constrained board designs.
For engineers reviewing the SN74LVTZ244PWR datasheet, SN74LVTZ244PWR pinout, SN74LVTZ244PWR application, or SN74LVTZ244PWR equivalent, this device serves as a level-translating, high-drive 3.3-V logic buffer for legacy 5-V system interfacing, memory address/data bus driving, and hot-swap-capable I/O expansion where power-up/down high-impedance state is required.
Technical Context
The SN74LVTZ244PWR implements Advanced BiCMOS Technology (ABT) for low static power and fast switching. Its dual 4-bit architecture features separate active-low output-enable (OE) controls per section, enabling independent gating of data flow from A inputs to Y outputs.
Bus-hold circuitry actively maintains valid logic levels on unused inputs without external components, while its 2.7-V to 3.6-V VCC range supports unregulated battery operation. The device guarantees 5-V-tolerant inputs and delivers 64 mA sink current per output at 3.3 V, with propagation delays under 5 ns and ground bounce <0.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - enables direct connection to unregulated Li-ion or 3.3-V SMPS rails without LDO regulation |
| Input Voltage Tolerance | Up to 5.5 V - allows direct interface with 5-V TTL/CMOS logic without level-shifting circuitry |
| IOL / IOH | 64 mA / −32 mA at VCC = 3.3 V - drives heavy capacitive loads (e.g., >50 pF buses) and multiple CMOS inputs |
| Propagation Delay | tPLH/tPHL ≤ 5 ns (CL = 50 pF) - supports high-speed data transfer up to ~100 MHz bus rates |
| Operating Temperature | −40°C to 85°C - qualified for industrial-grade embedded control, instrumentation, and communications equipment |
| Power-Up/Down State | High-impedance outputs - prevents bus contention during power sequencing in multi-rail systems |
| Bus-Hold Current | ±75 µA at VI = 2 V - eliminates need for external pullup/pulldown resistors on floating address or control lines |
Pinout & Package
TSSOP-20 (PW) package: 6.95 mm × 4.3 mm footprint, 1.2 mm max height, 0.65 mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output-enable control | Independent gating per 4-bit section; OE high forces Y outputs into high-Z state |
| 1A1–1A4, 2A1–2A4 | Data inputs | Eight buffered inputs with bus-hold; tolerate 5-V signals while powered from 3.3-V VCC |
| 1Y1–1Y4, 2Y1–2Y4 | Buffered outputs | Octal noninverting drivers; each delivers 64 mA sink capability and 5-V-tolerant output voltage swing |
| GND (Pin 10), VCC (Pin 20) | Power terminals | Single-supply operation; decoupling capacitor placement near Pin 20 critical for noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V input compatibility with 3.3-V VCC supply enables seamless integration into hybrid-voltage backplanes and legacy system upgrades |
| Bus-hold inputs | Eliminates external pullup resistors on address/control lines, reducing BOM count and PCB area in memory interface designs |
| High-impedance during power transitions | Prevents bus contention and data corruption during hot-plug, power-up ramping, or brownout conditions |
| Low ground bounce (VOLP < 0.8 V) | Ensures signal integrity in high-speed parallel buses by minimizing simultaneous switching noise on shared GND paths |
| Latch-up immunity > 500 mA | Meets JEDEC JESD-17 for robustness in noisy industrial environments with ESD or transient coupling |
Applications
| Memory Interface Expansion | Industrial Backplane Buffering |
|---|---|
Use Scenario: Driving address and data lines between a 3.3-V microcontroller and legacy 5-V SRAM or EPROM modules. IC Role / Device Role: Level-translating octal buffer providing bidirectional signal integrity and drive strength matching. Use Value: Eliminates discrete level shifters and pullup networks while maintaining timing margins under 50-pF load conditions. |
Use Scenario: Isolating and strengthening control signals across modular PLC I/O racks with mixed 3.3-V logic and 5-V field-side interfaces. IC Role / Device Role: Hot-swap-safe bus driver with power-up high-Z behavior and latch-up immunity. Use Value: Prevents backfeeding and bus contention during module insertion/removal in live backplanes. |
| Test Equipment Signal Conditioning | Communications Board I/O Expansion |
Use Scenario: Buffering digital stimulus and response signals in automated test equipment (ATE) with varying DUT voltage domains. IC Role / Device Role: Input-tolerant, high-drive buffer ensuring clean edge transitions across voltage domain boundaries. Use Value: Delivers consistent 64-mA sink current and sub-5-ns delay regardless of input voltage (3.3 V or 5 V). |
Use Scenario: Extending GPIO or control bus lines from a 3.3-V SoC to peripheral cards requiring 5-V logic compatibility. IC Role / Device Role: Dual-section configurable driver supporting independent enable control for segmented I/O banks. Use Value: Enables selective activation of I/O groups without affecting other subsystems, reducing dynamic power consumption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244APWR | Lower drive (24 mA sink), no bus-hold, 1.65–3.6 V VCC range | Suitable only for light-load, fully 3.3-V systems; requires external pullups for floating inputs | Select when cost and power efficiency outweigh 5-V tolerance and bus-hold requirements |
| SN74ALVC244PWR | Higher speed (tPD ≈ 3.3 ns), same 5-V tolerant inputs, no bus-hold, 1.65–3.6 V VCC | Better for high-frequency clock distribution but lacks bus-hold and industrial temp rating (−40°C to 85°C) | Choose for timing-critical 3.3-V-only designs where external pullups are acceptable |
Compared with SN74LVC244APWR and SN74ALVC244PWR, the SN74LVTZ244PWR uniquely combines 5-V input tolerance, integrated bus-hold, industrial temperature rating, and 64-mA drive-making it the only option among the three qualified for mixed-voltage, high-reliability industrial bus interfacing without design compromises.
Availability
SN74LVTZ244PWR is available at Aetrix Electronics and suitable for industrial automation, test equipment, and communications infrastructure requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVTZ244PWR 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, embedded processing, and logic solutions with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74LVTZ244PWR belongs to TI's ABT-family of advanced BiCMOS logic devices, engineered specifically for robust 3.3-V system interfacing with legacy 5-V components in demanding industrial environments.
FAQ
What is the maximum input voltage the SN74LVTZ244PWR can tolerate?
The SN74LVTZ244PWR supports input voltages up to 5.5 V, enabling direct connection to 5-V TTL or CMOS outputs without external level-shifting circuitry. This 5-V tolerance is guaranteed across the full operating temperature range (−40°C to 85°C) and VCC supply range (2.7 V to 3.6 V), making the SN74LVTZ244PWR ideal for mixed-voltage system integration where legacy and modern logic coexist on the same bus.
Does the SN74LVTZ244PWR require external pullup resistors on unused inputs?
No, the SN74LVTZ244PWR includes active bus-hold circuitry on all data inputs (1A1–1A4 and 2A1–2A4), which maintains valid logic levels on floating or unused pins without external components. This feature reduces BOM count, saves PCB space, and improves reliability in systems with dynamically configured I/O lines-confirming that external pullup resistors are unnecessary for proper operation of the SN74LVTZ244PWR.
What is the output drive capability of the SN74LVTZ244PWR at 3.3 V?
At VCC = 3.3 V, the SN74LVTZ244PWR delivers 64 mA of sink current (IOL) and −32 mA of source current (IOH) per output. This high drive strength ensures reliable signal integrity when driving heavy capacitive loads (e.g., 50 pF buses) or multiple downstream CMOS inputs, directly supporting the SN74LVTZ244PWR's use in memory address/data buffering and industrial backplane applications.
Is the SN74LVTZ244PWR compatible with hot-swap or live-insertion scenarios?
Yes, the SN74LVTZ244PWR enters a high-impedance state during power-up and power-down sequences, preventing bus contention and signal corruption when inserted or removed from a live system. This behavior-combined with latch-up immunity exceeding 500 mA per JEDEC JESD-17-makes the SN74LVTZ244PWR suitable for hot-pluggable modules in industrial PLCs and telecom line cards where system uptime is critical.
What package type and dimensions does the SN74LVTZ244PWR use?
The SN74LVTZ244PWR is supplied in a 20-pin Thin Shrink Small-Outline Package (TSSOP, PW), measuring 6.95 mm × 4.3 mm with 0.65 mm lead pitch and 1.2 mm maximum height. Its compact footprint occupies less than half the PCB area of standard SOIC packages, supporting high-density routing in space-constrained applications such as portable test gear and modular communications boards using the SN74LVTZ244PWR.
SN74LVTZ244PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTZ
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74LVTZ244PWR FAQ
1.How can I place an order for SN74LVTZ244PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTZ244PWR 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 SN74LVTZ244PWR reliable?
The price and inventory of SN74LVTZ244PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTZ244PWR is usually 5 days.
3.What payment methods are accepted for SN74LVTZ244PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTZ244PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVTZ244PWR?
SN74LVTZ244PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTZ244PWR 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 SN74LVTZ244PWR?
For technical support, including SN74LVTZ244PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTZ244PWR requirements.
6.How does Aetrix verify that SN74LVTZ244PWR is sourced from the original manufacturer or authorized distributors?
All SN74LVTZ244PWR 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 SN74LVTZ244PWR meets industry standards.
7.What is the process for return or replacement of SN74LVTZ244PWR?
All SN74LVTZ244PWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTZ244PWR, 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 SN74LVTZ244PWR part is unused and in its original packaging.
Return procedure for SN74LVTZ244PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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