My Inquiry
My Account
Nexperia USA Inc. 74LVCH244APW,112
- Part No.:
- 74LVCH244APW,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVCH244APW,112.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,065
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVCH244APW,112 from Nexperia is an octal 3-state buffer/line driver with bus-hold inputs, designed for bidirectional data buffering and level translation between 1.2 V–3.6 V and 5.5 V-tolerant inputs in mixed-voltage systems. It features dual independent output enables (1OE, 2OE), Schmitt-trigger inputs for noise immunity, and IOFF partial power-down protection. Used in industrial control backplanes and FPGA I/O expansion interfaces.
For engineers reviewing the 74LVCH244APW,112 datasheet, 74LVCH244APW,112 pinout, 74LVCH244APW,112 application, or 74LVCH244APW,112 equivalent, this device supports voltage-level translation, high-impedance bus isolation, and robust input noise rejection in space-constrained TSSOP20 layouts.
Technical Context
The 74LVCH244APW,112 implements two independent 4-bit buffered paths, each controlled by a dedicated active-low output enable (1OE or 2OE). Its bus-hold circuitry actively maintains logic states on all eight data inputs without external pull resistors, reducing system component count.
Schmitt-trigger inputs provide hysteresis (typically 0.3 V at VCC = 3.3 V), enabling reliable operation with slow-rising or noisy signals. The IOFF feature disables outputs and blocks backflow current when VCC = 0 V, supporting hot-swap and partial-power-down system architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 1.2 V to 3.6 V - Enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains. |
| Input voltage tolerance | Up to 5.5 V - Allows safe connection to 5 V legacy peripherals without level-shifting circuitry. |
| Propagation delay | 1.5 ns to 7.5 ns (VCC = 3.0–3.6 V) - Supports high-speed data routing in sub-10 ns timing-critical paths. |
| Bus hold current | ±60 μA to ±75 μA (VCC = 3.0 V) - Maintains stable logic state during floating input conditions without external biasing. |
| IOFF leakage | ±20 μA max at VCC = 0 V - Prevents damaging back-current flow during power sequencing or hot-plug events. |
| ESD rating | HBM >2000 V, CDM >1000 V - Ensures robust handling and board-level reliability in manufacturing and field environments. |
| Operating temperature | −40 °C to +125 °C - Qualified for under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1); 20-pin, 4.4 mm body width, 0.65 mm pitch; lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enables - Independently disable Group 1 (pins 18,16,14,12) or Group 2 (pins 3,5,7,9) outputs. |
| 2, 4, 6, 8 | 1A0–1A3 | Group 1 data inputs - Drive corresponding outputs 1Y0–1Y3 when 1OE = LOW. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Group 2 outputs - High-impedance when 2OE = HIGH; driven by 2A0–2A3 when 2OE = LOW. |
| 10 | GND | Ground reference - Must be connected to system 0 V plane; decoupling capacitor required near pin. |
| 11, 13, 15, 17 | 2A0–2A3 | Group 2 data inputs - Control outputs 2Y0–2Y3 under 2OE control. |
| 12, 14, 16, 18 | 1Y0–1Y3 | Group 1 outputs - Enabled only when 1OE = LOW; support 24 mA sink/source drive capability. |
| 20 | VCC | Supply voltage - Connect to regulated 1.2–3.6 V rail; requires local 100 nF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all data inputs | Maintains valid logic state during input float or open-circuit conditions-eliminates need for external pull-up/down resistors. |
| Schmitt-trigger inputs | Provides ≥0.3 V hysteresis at VCC = 3.3 V-rejects noise and ensures clean edge detection on slow or degraded signals. |
| IOFF partial power-down | Blocks current flow between powered and unpowered sections-enables safe hot-swap and multi-rail power sequencing. |
| 5.5 V tolerant inputs | Accepts 5 V logic levels while operating from 1.2–3.6 V supply-simplifies interfacing with legacy 5 V microcontrollers and peripherals. |
| JEDEC-compliant voltage ranges | Fully specified per JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V)-ensures interoperability across standard logic families. |
Applications
| Industrial Backplane Interface | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Isolating and buffering address/data lines between a main controller and modular I/O cards in a DIN-rail mounted PLC chassis. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer providing hot-swap-safe bus arbitration and voltage translation between 3.3 V controller and 5 V sensor modules. Use Value: Bus-hold prevents floating inputs during card insertion/removal; IOFF eliminates backfeed risk during partial power cycling of slot rails. |
Use Scenario: Extending limited FPGA GPIO count to drive multiple LED arrays, relays, and status indicators in embedded test equipment. IC Role / Device Role / Timing Role: Unidirectional output driver translating 1.8 V FPGA I/O to 3.3 V logic levels with 24 mA sink capability per channel. Use Value: Schmitt-trigger inputs reject noise from long PCB traces; low propagation delay (<7.5 ns) preserves timing margins in synchronous control loops. |
| Automotive Body Control Module | Medical Instrument Data Acquisition |
|
Use Scenario: Interfacing a 3.3 V microcontroller to legacy 5 V LIN transceivers and lamp drivers in vehicle door modules. IC Role / Device Role / Timing Role: Level-translating buffer enabling communication across mixed-supply domains while meeting AEC-Q100 Grade 1 temperature requirements. Use Value: 5.5 V input tolerance eliminates external level shifters; −40 °C to +125 °C rating ensures reliability in under-dash thermal environments. |
Use Scenario: Buffering analog-to-digital converter (ADC) parallel output buses to isolate sensitive acquisition circuitry from noisy digital processing stages. IC Role / Device Role / Timing Role: High-impedance 3-state isolator preventing signal corruption during ADC conversion cycles and multiplexer switching. Use Value: Low output skew (<1.5 ns) preserves parallel bus timing integrity; ESD robustness (>2000 V HBM) protects against operator-handling discharge events. |
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 |
|---|---|---|---|
| 74LVC244APW,118 | No bus-hold circuitry; identical pinout, timing, and voltage specs. | Requires external pull resistors on inputs if floating states occur; lower static power but less robust in undriven scenarios. | Select when system guarantees always-driven inputs and minimal quiescent current is critical. |
| SN74LVC244APWR | TSSOP20 package (same footprint), but TI part lacks bus-hold and has slightly higher ICC (max 40 μA vs. 10 μA). | Compatible for basic buffering, but not suitable for floating-bus environments without redesign. | Choose only if existing TI design ecosystem mandates cross-manufacturer sourcing with verified layout compatibility. |
Compared with 74LVC244APW,118 and SN74LVC244APWR, the 74LVCH244APW,112 uniquely delivers bus-hold functionality in a drop-in TSSOP20 package-reducing BOM count and improving noise resilience where input states may be transiently undefined.
Availability
74LVCH244APW,112 is available at Aetrix Electronics and suitable for industrial automation backplanes, automotive body control modules, FPGA I/O expansion, and medical data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for 74LVCH244APW,112 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 focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions optimized for reliability and energy efficiency.
The 74LVCH244APW,112 belongs to Nexperia's LVC/LVCH advanced logic family-engineered for low-voltage, mixed-signal interfacing in space-constrained, thermally demanding applications such as automotive ECUs and industrial controllers.
FAQ
Can the 74LVCH244APW,112 operate with a 1.2 V supply and still accept 5 V inputs?
Yes. The device is fully specified down to 1.2 V VCC and supports input voltages up to 5.5 V regardless of supply level. This overvoltage tolerance allows direct connection to 5 V sources while powered from ultra-low-voltage rails-no external clamping or level-shifting components are needed.
What is the purpose of the bus-hold feature, and how does it affect system design?
The bus-hold circuit actively maintains the last valid logic state on each data input using weak feedback-preventing floating nodes that could cause erratic behavior or increased EMI. It eliminates the need for external pull-up/pull-down resistors, reducing component count, PCB area, and potential signal integrity issues in high-density layouts.
How does the IOFF function protect the device during partial power-down sequences?
When VCC drops to 0 V, the IOFF circuitry forces all outputs into high-impedance and blocks current flow between powered and unpowered sections of the system. This prevents back-current from flowing through the IC's internal paths-a critical safeguard during hot-swap operations or staggered power-up/down of multi-rail boards.
Is the 74LVCH244APW,112 pin-compatible with the 74LVC244APW,118?
Yes-both share identical TSSOP20 (SOT360-1) pinout, electrical specifications, and timing characteristics. The sole functional difference is the presence of bus-hold on all data inputs in the LVCH variant. No layout changes are required when upgrading from LVC to LVCH for enhanced noise immunity.
74LVCH244APW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVCH244APW,112 FAQ
1.How can I place an order for 74LVCH244APW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH244APW,112 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 74LVCH244APW,112 reliable?
The price and inventory of 74LVCH244APW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH244APW,112 is usually 5 days.
3.What payment methods are accepted for 74LVCH244APW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH244APW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH244APW,112?
74LVCH244APW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH244APW,112 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 74LVCH244APW,112?
For technical support, including 74LVCH244APW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH244APW,112 requirements.
6.How does Aetrix verify that 74LVCH244APW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVCH244APW,112 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 74LVCH244APW,112 meets industry standards.
7.What is the process for return or replacement of 74LVCH244APW,112?
All 74LVCH244APW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH244APW,112, 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 74LVCH244APW,112 part is unused and in its original packaging.
Return procedure for 74LVCH244APW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVCH244APW,112 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…
