My Inquiry
My Account
Texas Instruments SN74LVCZ244ADWR
- Part No.:
- SN74LVCZ244ADWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVCZ244ADWR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,032
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVCZ244ADWR from Texas Instruments is an octal 3-state buffer/driver IC configured as two independent 4-bit banks, each controlled by a dedicated active-low output enable pin. It operates from 2.7V to 3.6V, supports 5.5V-tolerant inputs, achieves 5.9ns max propagation delay at 3.3V, and delivers ±24mA output drive - used for high-speed bus interfacing in memory systems and network switches.
For engineers reviewing the SN74LVCZ244ADWR datasheet, SN74LVCZ244ADWR pinout, SN74LVCZ244ADWR application, or SN74LVCZ244ADWR equivalent, key selection criteria include mixed-mode voltage compatibility (5V inputs with 3.3V VCC), Ioff support for live insertion, ground bounce <0.8V, and thermal performance in TSSOP-20 packaging.
Technical Context
The SN74LVCZ244ADWR implements dual-bank CMOS logic with independent OE1/OE2 control enabling precise per-bus segment isolation. Its balanced 3-state outputs provide symmetrical sourcing/sinking capability up to ±24mA at 3V, supporting clean signal integrity on long PCB traces.
It integrates Ioff circuitry that disables all outputs when VCC = 0V, preventing back-drive current and enabling hot-plug operation. Input tolerance to 5.5V allows direct interfacing with legacy 5V logic while powered from 3.3V rails - critical for mixed-voltage system integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V–3.6V - defines compatible supply rail for industrial and embedded 3.3V systems |
| Input Voltage Max | 5.5V - enables direct connection to 5V logic without level shifters |
| tpd (Max) | 5.9ns at 3.3V - ensures sub-6ns timing margin for high-speed address/data buses |
| IOL/IOH | ±24mA at 3V - drives heavy capacitive loads or multiple TTL inputs reliably |
| Ioff Support | Yes - prevents current flow during partial power-down, enabling live insertion |
| Operating Temp | –40°C to +125°C - qualified for extended industrial and automotive under-hood environments |
| VOLP / VOHV | <0.8V / >2V at 3.3V - suppresses ground bounce and undershoot for stable signal edges |
Pinout & Package
Packaged in 20-pin TSSOP (PW), the SN74LVCZ244ADWR measures 6.5mm × 6.4mm with a 0.65mm pitch and exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 19OE | Bank 1 & Bank 2 Output Enable (active low) | Independent control of 4-bit segments - enables selective bus gating without global disable |
| 1A1–1A4, 2A1–2A4 | Input channels (8 total) | Non-inverting inputs accepting 5.5V-tolerant signals across both banks |
| 1Y1–1Y4, 2Y1–2Y4 | Output channels (8 total) | CMOS 3-state outputs with ±24mA drive strength and fast edge rates |
| 10 GND, 20 VCC | Power terminals | Dual power/ground pins reduce switching noise and improve PSRR |
| Thermal Pad | Exposed copper pad (RKS only) | Not applicable to SN74LVCZ244ADWR - TSSOP package has no thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5V-tolerant inputs with 3.3V VCC allow seamless interface between legacy and modern logic families |
| Ioff partial-power-down protection | Eliminates back-drive current when VCC is off - essential for hot-swap and modular backplane designs |
| Balanced CMOS 3-state outputs | Symmetrical ±24mA drive minimizes skew and ensures consistent rise/fall times across all 8 channels |
| Low ground bounce (VOLP) | <0.8V at 3.3V ensures stable reference for adjacent high-speed signals and reduces EMI |
| Latch-up immunity | >100mA per JESD78 Class II - guarantees robust operation in noisy industrial environments |
Applications
| Memory Subsystem Interface | Network Switch Backplane |
|---|---|
Use Scenario: Driving address and data lines between DDR controller and SDRAM modules with trace lengths >10 cm. IC Role / Device Role / Timing Role: Octal buffer providing impedance-matched, slew-controlled signal transmission with bank-selectable enable. Use Value: Enables reliable 200+ MHz bus operation using 5.9ns tpd and 5.5V-tolerant inputs to interface with legacy memory controllers. | Use Scenario: Isolating and strengthening control signals across multi-slot switch fabric with varying voltage domains. IC Role / Device Role / Timing Role: Dual-bank 3-state driver managing configuration and status lines between ASICs operating at 3.3V and 5V. Use Value: Eliminates need for discrete level shifters via 5.5V input tolerance and supports hot-plug reconfiguration via Ioff. |
| Server Baseboard Management | Industrial PLC I/O Expansion |
Use Scenario: Buffering SMBus, I²C, and GPIO signals between BMC and peripheral sensors/EEPROMs. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer ensuring signal integrity across noisy server chassis backplanes. Use Value: Delivers ±24mA drive to overcome capacitive loading from long traces and multiple slave devices. | Use Scenario: Interfacing microcontroller GPIOs to isolated digital I/O modules requiring robust noise immunity. IC Role / Device Role / Timing Role: 3-state bus driver enabling shared communication lines among distributed I/O nodes. Use Value: Supports –40°C to +125°C operation and latch-up immunity for deployment in harsh factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244APW | No Z-series features: lacks 5.5V input tolerance and enhanced noise immunity (VOLP/VOHV) | Requires external level shifting for 5V interface; less suitable for mixed-voltage backplanes | Select SN74LVCZ244ADWR when interfacing 5V peripherals or demanding signal integrity is required |
| 74LVCH244APW | Includes bus-hold circuitry; identical voltage specs and pinout but higher ICC in enabled state | Eliminates external pull-ups on unused inputs - beneficial for floating-bus reliability | Choose 74LVCH244APW where input termination is impractical; SN74LVCZ244ADWR preferred for lowest ground bounce |
Compared with SN74LVC244APW, SN74LVCZ244ADWR adds 5.5V input tolerance and lower ground bounce for mixed-voltage robustness; versus 74LVCH244APW, it trades bus-hold for superior noise suppression - making SN74LVCZ244ADWR optimal for high-speed, noise-sensitive bus driving.
Availability
SN74LVCZ244ADWR is available at Aetrix Electronics and suitable for memory subsystems, network switch backplanes, server baseboard management, and industrial PLC I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVCZ244ADWR 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 U.S.-based semiconductor company specializing in analog, embedded processing, and logic solutions with broad industrial and automotive qualification.
The SN74LVCZ244ADWR belongs to TI's LVCZ logic family, engineered specifically for high-speed, mixed-voltage bus interfacing in enterprise infrastructure and industrial control systems.
FAQ
What is the maximum input voltage rating for SN74LVCZ244ADWR?
The SN74LVCZ244ADWR supports input voltages up to 5.5V regardless of VCC level - a key Z-series feature enabling direct connection to 5V logic families while operating from a 3.3V supply. This eliminates external level-shifting components in mixed-voltage designs and is verified in the Recommended Operating Conditions table of the official datasheet.
Does SN74LVCZ244ADWR support hot-plug or live insertion?
Yes, SN74LVCZ244ADWR supports live insertion via its Ioff feature, which disables all outputs when VCC = 0V - preventing back-drive current and protecting upstream circuitry during partial power-down. This behavior is explicitly characterized in the Electrical Characteristics table and confirmed in Section 7.3.2 of the datasheet.
What is the propagation delay of SN74LVCZ244ADWR at 3.3V?
The maximum propagation delay (tpd) of SN74LVCZ244ADWR is 5.9ns at VCC = 3.3V and TA = –40°C to +85°C, as specified in Section 5.6 of the datasheet. At the extended temperature range (–40°C to +125°C), tpd increases to 6.4ns - a value critical for timing closure in high-speed memory and switch fabric applications.
How many output enable pins does SN74LVCZ244ADWR have, and what is their function?
SN74LVCZ244ADWR has two active-low output enable pins: 1OE (Pin 1) controls Bank 1 (channels 1Y1–1Y4), and 2OE (Pin 19) controls Bank 2 (channels 2Y1–2Y4). Each independently places its four outputs into high-impedance state, enabling flexible bus segmentation - a capability confirmed in the Functional Block Diagram and Pin Functions table.
Is SN74LVCZ244ADWR compatible with standard TSSOP-20 footprints?
Yes, SN74LVCZ244ADWR uses the industry-standard PW (TSSOP-20) package with 0.65mm pitch, 6.5mm × 6.4mm body dimensions, and JEDEC-compliant pinout - fully compatible with standard TSSOP-20 land patterns and reflow profiles. Mechanical details are documented in Section 11 of the datasheet and TI's Packaging Information addendum.
SN74LVCZ244ADWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCZ
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 24mA, 24mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74LVCZ244ADWR FAQ
1.How can I place an order for SN74LVCZ244ADWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCZ244ADWR 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 SN74LVCZ244ADWR reliable?
The price and inventory of SN74LVCZ244ADWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCZ244ADWR is usually 5 days.
3.What payment methods are accepted for SN74LVCZ244ADWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCZ244ADWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVCZ244ADWR?
SN74LVCZ244ADWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCZ244ADWR 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 SN74LVCZ244ADWR?
For technical support, including SN74LVCZ244ADWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCZ244ADWR requirements.
6.How does Aetrix verify that SN74LVCZ244ADWR is sourced from the original manufacturer or authorized distributors?
All SN74LVCZ244ADWR 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 SN74LVCZ244ADWR meets industry standards.
7.What is the process for return or replacement of SN74LVCZ244ADWR?
All SN74LVCZ244ADWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCZ244ADWR, 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 SN74LVCZ244ADWR part is unused and in its original packaging.
Return procedure for SN74LVCZ244ADWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVCZ244ADWR 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…
