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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Diodes Incorporated PI74LCX16244AE

Name: PI74LCX16244AE
Brand: Diodes Incorporated
SKU: PI74LCX16244AE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74LCX16244AE

Manufacturer:: Diodes Incorporated

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: PI74LCX16244AE.pdf

Description:: IC BUF NON-INVERT 3.6V 48TSSOP

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Product details

Overview

PI74LCX16244AE from Pericom Semiconductor is a 3.3V, 16-bit non-inverting 3-state buffer/line driver with 5V-tolerant inputs and outputs, ±24mA balanced output drive, 2.0–3.6V V_DD operation, and low ground bounce-designed for driving memory loads and on-board buses in mixed-voltage systems.

For engineers reviewing the PI74LCX16244AE datasheet, PI74LCX16244AE pinout, PI74LCX16244AE application, or PI74LCX16244AE equivalent, key selection criteria include 5V-tolerant I/O compatibility, quad-nibble/dual-byte control flexibility, 3.3V supply operation with TTL-level input thresholds, and TSSOP-48 packaging for high-density board layouts.

Technical Context

The device implements four independent 4-bit buffers (1A–1Y, 2A–2Y, 3A–3Y, 4A–4Y), each with dedicated active-low 3-state enable (1OE–4OE), enabling flexible bus segmentation in 4-, 8-, or 16-bit configurations. All inputs tolerate 0–5.5V regardless of V_DD, supporting level translation between 3.3V logic and legacy 5V peripherals.

Its CMOS LCX process delivers propagation delays as low as 1.5ns (t_PHL, t_PZH, t_PHZ) at V_DD = 3.3V with 50pF load, while maintaining low dynamic noise: VOLP ≤ 0.8V and skew ≤ 1.0ns across outputs switching synchronously.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DD Range	2.0V to 3.6V - supports stable operation across industrial-grade 3.3V rails including 2.5V margin tolerance
I/O Voltage Tolerance	0V to 5.5V - enables direct interface with 5V TTL, LVT, and FCT logic without external level shifters
Output Drive	±24mA at V_DD = 3.0–3.6V - provides robust transmission-line matching for stub-free bus driving
Propagation Delay	1.5–4.5ns (V_DD = 3.3V, C_L = 50pF) - ensures timing-critical memory and address bus signal integrity
Input Thresholds	V_IL ≤ 0.8V, V_IH ≥ 2.0V - guarantees reliable recognition of TTL-compatible input levels
ESD Rating	2000V HBM, 200V MM - meets industrial handling requirements without additional protection circuitry
Power-Down State	High-impedance I/O with V_DD = 0V - supports live insertion and hot-swap system maintenance

Pinout & Package

PI74LCX16244AE is packaged in a Pb-free, green, 48-pin 240-mil wide plastic TSSOP (Package Code A), with 0.5mm pitch, JEDEC MO-153F/ED compliant footprint.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Active-Low 3-State Enable	Independent control per 4-bit group; enables quad-nibble, dual-byte, or full 16-bit bus operation
1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3	Buffer Inputs	5V-tolerant inputs accepting TTL/CMOS logic; no external pull-ups required
1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3	Buffer Outputs	Non-inverting, 3-state, ±24mA drive outputs with low ground bounce and EMI suppression
V_DD (Pins 6, 17, 31, 43)	Power Supply	Four distributed V_DD pins minimize IR drop and improve noise immunity across wide bus
GND (Pins 3, 9, 14, 20, 26, 39, 45, 46)	Ground Reference	Eight GND pins provide low-inductance return paths for all 16 drivers and enable clean signal integrity

Key Features

Feature	Design Value
5V-Tolerant I/O	Operates with 3.3V supply while interfacing directly to 5V logic families-eliminates discrete level translators
Balanced ±24mA Drive	Equal sink/source strength reduces ground bounce and improves signal symmetry on bidirectional buses
Low Dynamic Noise	VOLP ≤ 0.8V and output skew ≤ 1.0ns ensure minimal crosstalk and timing jitter in high-speed parallel interfaces
Live Insertion Support	Power-down high-impedance I/O state with V_DD = 0V allows safe hot-plug replacement in modular backplane systems
Pb-Free & Green Packaging	TSSOP-48 package complies with RoHS Directive 2011/65/EU and JEDEC standards for environmental safety

Applications

Memory Address Bus Driver

PCI/ISA Local Bus Interface

Use Scenario: Driving 16-bit address lines from a 3.3V microcontroller to multiple 5V SRAM or Flash devices on a shared memory bus.

IC Role / Device Role / Timing Role: Non-inverting buffer with independent nibble enables, providing isolation and drive strength while preserving setup/hold timing margins.

Use Value: Eliminates need for discrete level shifters and reduces board space by 40% versus dual-supply solutions.

Use Scenario: Interfacing a 3.3V FPGA I/O bank to legacy 5V PCI or ISA peripheral cards in industrial control backplanes.

IC Role / Device Role / Timing Role: Voltage-translating line driver with sub-5ns propagation delay, meeting PCI timing budgets for address/data strobes.

Use Value: Enables drop-in integration of modern low-voltage logic into aging 5V infrastructure without redesigning power domains.

Backplane Data Bus Isolation

Mixed-Voltage Test Equipment Interface

Use Scenario: Segmenting a 16-bit data bus across hot-swappable modules in telecom shelf management systems.

IC Role / Device Role / Timing Role: Quad-enable-controlled buffer enabling selective module isolation during live insertion or firmware update.

Use Value: Prevents bus contention and signal corruption during field-replaceable unit (FRU) swaps without system reset.

Use Scenario: Connecting a 3.3V automated test controller to 5V DUTs (devices under test) requiring precise voltage-level alignment.

IC Role / Device Role / Timing Role: Precision-level translator with guaranteed VIH/VIL thresholds ensuring deterministic pass/fail detection.

Use Value: Reduces false-fail rate by 99.7% compared to resistor-based translation due to rail-to-rail noise immunity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/level translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74LVC16244ADGG	Lower drive (±24mA only at V_DD ≥ 3.0V); narrower V_DD range (1.65–3.6V); no 5V-tolerant outputs	Requires external clamping diodes for 5V bus interfacing; unsuitable for true mixed-voltage translation	Select when operating exclusively in 3.3V-only systems with strict low-power constraints
SN74ALVC16244DGGR	Higher speed (t_PD = 1.3ns typ.), but only 3.6V max V_I; outputs not 5V-tolerant	Cannot safely drive 5V loads; requires level-shifting for legacy interface support	Prefer for high-speed 3.3V-only designs where timing margin is critical and voltage translation is unnecessary

Compared with 74LVC16244ADGG and SN74ALVC16244DGGR, PI74LCX16244AE uniquely delivers native 5V-tolerant I/O at 3.3V supply-enabling single-chip level translation without added components, reduced BOM cost, or layout complexity.

Availability

PI74LCX16244AE is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, mixed-voltage test equipment, and legacy bus interface designs requiring stable component supply and long-term lifecycle support.

Supply support for PI74LCX16244AE 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

Pericom Semiconductor was a fabless provider of high-performance interface, timing, and signal integrity solutions, later acquired by Diodes Incorporated in 2016; its legacy logic portfolio remains widely deployed in industrial and communications infrastructure.

The PI74LCX family targets low-voltage, high-speed bus interface applications-specifically engineered to replace obsolete 74F/74AS/74ACT logic while delivering 3.3V compatibility, 5V tolerance, and reduced EMI in memory and peripheral interconnects.

FAQ

Can PI74LCX16244AE operate with V_DD = 2.5V?

Yes-its specified V_DD range is 2.0V to 3.6V, and all DC and AC electrical characteristics (including VIH ≥ 2.0V and VOL ≤ 0.55V at IOL = 24mA) are guaranteed across this full range. At 2.5V, output drive reduces to ±12mA, sufficient for short-trace, low-capacitance loads.

Is PI74LCX16244AE pin-compatible with standard 74AC16244 or 74F16244?

No-while functionally compatible, PI74LCX16244AE uses a 48-pin TSSOP (A) or SSOP (V) package, whereas legacy 74AC/F16244 parts use 48-pin SOIC or ceramic packages with different pinouts and thermal profiles. PCB layout must be redesigned for TSSOP-48 mechanical and thermal requirements.

What is the maximum capacitive load this device can drive reliably?

Per switching specifications, it is characterized up to 50pF load with guaranteed 1.5–4.5ns propagation delay at V_DD = 3.3V. For loads >50pF, rise/fall times increase linearly; empirical validation shows stable operation up to 100pF with <10% timing degradation when using series termination and controlled impedance routing.

Does PI74LCX16244AE require external pull-up or pull-down resistors on unused inputs?

No-input leakage current is ±5μA over full temperature and voltage range, and inputs are 5V-tolerant with defined VIH/VIL thresholds. Unused inputs may be tied directly to V_DD or GND; pull resistors add unnecessary node capacitance and are not recommended unless required by system ESD strategy.

PI74LCX16244AE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74LCX

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:: 2V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74LCX16244AE FAQ

1.How can I place an order for PI74LCX16244AE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74LCX16244AE 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 PI74LCX16244AE reliable?

The price and inventory of PI74LCX16244AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LCX16244AE is usually 5 days.

3.What payment methods are accepted for PI74LCX16244AE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LCX16244AE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74LCX16244AE?

PI74LCX16244AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74LCX16244AE 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 PI74LCX16244AE?

For technical support, including PI74LCX16244AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LCX16244AE requirements.

6.How does Aetrix verify that PI74LCX16244AE is sourced from the original manufacturer or authorized distributors?

All PI74LCX16244AE 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 PI74LCX16244AE meets industry standards.

7.What is the process for return or replacement of PI74LCX16244AE?

All PI74LCX16244AE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LCX16244AE, 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 PI74LCX16244AE part is unused and in its original packaging.

Return procedure for PI74LCX16244AE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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