My Inquiry
My Account
Nexperia USA Inc. 74ALVCH16244DGG,51
- Part No.:
- 74ALVCH16244DGG,51
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16244DGG,51.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,285
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ALVCH16244DGG,51 from Nexperia is a 16-bit CMOS buffer/line driver with 3-state outputs, four independent output enables (1OE–4OE), bus hold on all inputs, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V, delivers ±24 mA drive at 3.0 V, and supports 2.5 V/3.3 V system interfacing in memory address/data bus expansion applications.
For engineers reviewing the 74ALVCH16244DGG,51 datasheet, 74ALVCH16244DGG,51 pinout, 74ALVCH16244DGG,51 application, or 74ALVCH16244DGG,51 equivalent, key selection criteria include bus hold functionality, 48-pin TSSOP package compatibility, 3.0 ns max propagation delay at 3.3 V, IOFF-enabled hot-swap capability, and 5.5 V-tolerant inputs for mixed-voltage domain interfacing.
Technical Context
This device implements a quad 4-bit non-inverting buffer architecture with independent active-low output enables per group. Each of the four 4-bit sections (1A–1Y, 2A–2Y, etc.) features dedicated OE control, enabling flexible bus segmentation and dynamic load management in high-density PCB layouts.
The integrated bus hold circuitry maintains valid logic states on unused inputs without external resistors, while the IOFF circuit disables outputs during power-down to prevent backflow current-critical for live-insertion systems and multi-rail power sequencing where VCC may be ramped independently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 3.6 V - supports single-supply operation across 1.8 V, 2.5 V, and 3.3 V logic domains |
| Output drive strength | ±24 mA at VCC = 3.0 V - sufficient to drive 50 Ω transmission lines directly at 85 °C |
| Propagation delay | 1.0 ns (min) to 3.0 ns (max) at VCC = 3.0–3.6 V - enables sub-333 MHz bus timing margins |
| Input voltage tolerance | Up to 5.5 V - allows safe interfacing with 5 V TTL outputs without level shifters |
| Bus hold current | ±75 μA (typ) at VCC = 3.0 V - actively sustains input logic state without pull-up/down resistors |
| IOFF leakage | <10 μA at VCC = 0 V - prevents damaging back-current during partial power-down sequences |
| Operating temperature | −40 °C to +85 °C - qualified for industrial-grade embedded and computing applications |
Pinout & Package
TSSOP48 plastic thin shrink small outline package (SOT362-1), 48 leads, body width 6.1 mm, 0.5 mm pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24, 25, 48 | 1OE, 4OE, 3OE, 2OE | Active-low output enable inputs controlling groups of four outputs each |
| 47, 46, 44, 43 | 1A0–1A3 | Data inputs for first 4-bit buffer section |
| 2, 3, 5, 6 | 1Y0–1Y3 | 3-state non-inverting outputs for first buffer section |
| 41, 40, 38, 37 | 2A0–2A3 | Data inputs for second 4-bit buffer section |
| 8, 9, 11, 12 | 2Y0–2Y3 | 3-state non-inverting outputs for second buffer section |
| 36, 35, 33, 32 | 3A0–3A3 | Data inputs for third 4-bit buffer section |
| 13, 14, 16, 17 | 3Y0–3Y3 | 3-state non-inverting outputs for third buffer section |
| 30, 29, 27, 26 | 4A0–4A3 | Data inputs for fourth 4-bit buffer section |
| 19, 20, 22, 23 | 4Y0–4Y3 | 3-state non-inverting outputs for fourth buffer section |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground connections minimizing ground bounce and improving noise immunity |
| 7, 18, 31, 42 | VCC | Four supply pins reducing power delivery impedance and supply rail noise |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold circuitry | Maintains stable logic levels on floating inputs without external resistors, reducing BOM count and board area |
| IOFF partial power-down | Disables outputs and blocks back-current when VCC = 0 V, enabling safe hot-plug and multi-rail sequencing |
| 5.5 V-tolerant inputs | Accepts 5 V TTL signals directly into 3.3 V or 2.5 V systems, eliminating level translators in legacy interface designs |
| Multi-byte flow-through pinout | Groups inputs and outputs adjacently per 4-bit section, simplifying trace routing and reducing crosstalk in dense layouts |
| Low-inductance power delivery | Four VCC and eight GND pins minimize simultaneous switching noise and improve signal integrity on high-speed buses |
Applications
| Memory Address Bus Expansion | PCI/PCIe Slot Interface Buffering |
|---|---|
Use Scenario: Extending address lines from a microcontroller to multiple SRAM or Flash devices in a shared bus topology. IC Role / Device Role / Timing Role: Non-inverting 16-bit buffer with per-group 3-state control isolates memory banks and prevents bus contention during read/write cycles. Use Value: Enables deterministic timing with ≤3.0 ns propagation delay and eliminates need for external pull-ups due to bus hold on unused address lines. |
Use Scenario: Level-shifting and driving 32-bit PCI data/address lines between legacy host bridge and add-in cards operating at 3.3 V. IC Role / Device Role / Timing Role: Bidirectional-capable line driver with 5.5 V-tolerant inputs accepts 5 V TTL signaling while sourcing/sinking ±24 mA into 50 Ω traces. Use Value: Supports hot-plug insertion via IOFF protection and reduces layout complexity with integrated bus hold on unconnected card detect or ID pins. |
| FPGA I/O Expansion Hub | Industrial PLC Backplane Interface |
Use Scenario: Aggregating and buffering GPIO signals from an FPGA to external sensors, actuators, and communication peripherals. IC Role / Device Role / Timing Role: Quad 4-bit buffer provides independent enable control per peripheral group, allowing dynamic power gating and signal isolation. Use Value: Eliminates external termination components using bus hold on idle sensor lines and ensures robustness against ESD (2000 V HBM) in noisy factory environments. |
Use Scenario: Interfacing modular I/O modules to a central controller over a 16-bit parallel backplane with varying supply rails. IC Role / Device Role / Timing Role: Voltage-level agnostic buffer (1.2–3.6 V VCC) with 5.5 V-tolerant inputs bridges 24 V digital logic and 3.3 V controller domains safely. Use Value: Prevents latch-up (exceeds JESD78 Class II Level B) and enables partial power-down of inactive I/O slots without disrupting active modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ALVC16244DGG,51 | No bus hold; lower input voltage tolerance (5.5 V only on 74ALVC variant) | Suitable for cost-sensitive designs where inputs are always driven | Select when bus hold is unnecessary and IOFF is still required |
| SN74LVC16244ADGGR | Texas Instruments part; identical pinout and function but no bus hold; IOFF supported | Lacks bus hold, requiring external pull resistors on floating inputs | Choose for TI-design ecosystems or when sourcing flexibility across vendors is prioritized |
Compared with 74ALVC16244DGG,51 and SN74LVC16244ADGGR, the 74ALVCH16244DGG,51 uniquely integrates bus hold-reducing component count and improving reliability in systems with unterminated or intermittently connected signals-while maintaining full pin and functional compatibility with both alternatives.
Availability
74ALVCH16244DGG,51 is available at Aetrix Electronics and suitable for memory subsystem expansion, FPGA I/O aggregation, industrial backplane interfaces, and PCI slot buffering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ALVCH16244DGG,51 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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74ALVCH16244 belongs to Nexperia's advanced low-voltage CMOS logic family, designed specifically for robust, low-noise bus interfacing in space-constrained industrial and computing applications where power efficiency, signal integrity, and mixed-voltage compatibility are critical.
FAQ
Does 74ALVCH16244DGG,51 support hot-swap operation?
Yes. Its IOFF circuitry disables outputs and blocks back-current when VCC is powered down, enabling safe insertion and removal in live backplanes or modular systems. This feature is verified per JEDEC JESD78 Class II Level B latch-up testing and confirmed in the datasheet's partial power-down specification.
Can 74ALVCH16244DGG,51 interface directly with 5 V TTL outputs?
Yes. All data and control inputs tolerate up to 5.5 V regardless of VCC level, allowing direct connection to 5 V TTL sources without level-shifting circuitry. This is explicitly specified in Table 4 (Limiting Values) and Table 5 (Recommended Operating Conditions) of the datasheet.
What is the purpose of the bus hold feature, and how does it affect design?
The bus hold circuit actively maintains the last-valid logic state on any floating input, eliminating the need for external pull-up or pull-down resistors. It draws ±75 μA typical at 3.0 V VCC (Table 6), reducing BOM cost, PCB area, and potential signal integrity issues caused by resistor parasitics.
How many ground and supply pins does the TSSOP48 package have, and why does it matter?
The TSSOP48 package has eight GND pins (pins 4, 10, 15, 21, 28, 34, 39, 45) and four VCC pins (7, 18, 31, 42). This low-inductance power distribution minimizes ground bounce and supply noise during high-speed switching-critical for maintaining timing margins and signal integrity on 16-bit parallel buses.
74ALVCH16244DGG,51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ALVCH16244DGG,51 FAQ
1.How can I place an order for 74ALVCH16244DGG,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16244DGG,51 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 74ALVCH16244DGG,51 reliable?
The price and inventory of 74ALVCH16244DGG,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16244DGG,51 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16244DGG,51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16244DGG,51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16244DGG,51?
74ALVCH16244DGG,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16244DGG,51 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 74ALVCH16244DGG,51?
For technical support, including 74ALVCH16244DGG,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16244DGG,51 requirements.
6.How does Aetrix verify that 74ALVCH16244DGG,51 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16244DGG,51 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 74ALVCH16244DGG,51 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16244DGG,51?
All 74ALVCH16244DGG,51 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16244DGG,51, 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 74ALVCH16244DGG,51 part is unused and in its original packaging.
Return procedure for 74ALVCH16244DGG,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ALVCH16244DGG,51 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…
