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Diodes Incorporated PI74LCX16244AEX
- Part No.:
- PI74LCX16244AEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74LCX16244AEX.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,164
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Product details
Overview
PI74LCX16244AEX 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 VDD operation, and TSSOP-48 package. It supports mixed-voltage translation between 3.3V and 5V systems and is optimized for driving memory loads and on-board buses.
For engineers reviewing the PI74LCX16244AEX datasheet, PI74LCX16244AEX pinout, PI74LCX16244AEX application, or PI74LCX16244AEX equivalent, key selection criteria include 5V tolerance, low ground bounce, 3-state control granularity (quad-nibble/dual-byte/16-bit), propagation delay ≤4.5ns, and Pb-free TSSOP-48 mechanical compatibility.
Technical Context
The device implements four independent 4-bit groups (1A–1Y, 2A–2Y, 3A–3Y, 4A–4Y), each controlled by its own active-low 3-state enable (1OE–4OE). Input logic thresholds are TTL-compatible (VIL = 0.8V, VIH = 2.0V) across full VDD range (2.0–3.6V).
Output switching is characterized at CL = 50pF with tPHL/tPLH ≤4.5ns (VDD = 3.3V), tPZH/tPHZ ≤5.5ns, and output skew ≤1.0ns. Dynamic noise performance includes VOLP ≤0.8V under 15-output switching conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 2.0V to 3.6V - Enables stable operation in 3.3V systems with margin for rail variation |
| Input Voltage Range | 0V to 5.5V - Supports direct interfacing with 5V logic without level shifters |
| Output Drive | ±24mA - Provides sufficient current for driving 50Ω transmission lines and memory address/data buses |
| Propagation Delay | ≤4.5ns @ VDD = 3.3V - Meets timing requirements for high-speed bus buffering up to ~200MHz |
| Quiescent Current | ≤10μA - Minimizes static power in battery-backed or low-power standby modes |
| ESD Rating | 2000V HBM - Ensures robustness during board handling and live insertion |
| Operating Temp | –40°C to +85°C - Qualified for industrial temperature environments |
Pinout & Package
Package: 48-pin TSSOP (240-mil wide), Pb-free & Green compliant, JEDEC MO-153F/ED standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low 3-state enable inputs | Independent control per 4-bit group enables flexible bus segmentation and power gating |
| 1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3 | Buffer inputs | 16 total inputs accepting 5V-tolerant logic levels for mixed-voltage system integration |
| 1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3 | Buffered 3-state outputs | 16 high-drive outputs with low ground bounce and matched impedance for clean signal integrity |
| VDD (Pins 6, 17, 31, 43) | Power supply | Four distributed VDD pins reduce supply inductance and improve decoupling effectiveness |
| GND (Pins 3, 9, 14, 20, 27, 39, 45, 46) | Ground reference | Eight GND pins minimize ground bounce and support high-speed switching stability |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant I/O | Enables seamless interface between legacy 5V peripherals and modern 3.3V controllers without external translators |
| Balanced ±24mA drive | Reduces signal asymmetry and improves rise/fall time matching for differential-sensitive routing |
| Low ground bounce | Minimizes simultaneous switching noise that could corrupt adjacent signals or cause false triggering |
| Live insertion support | Allows hot-plug capability in modular backplane or card-edge applications without system reset |
| Pb-free & Green packaging | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile requirements |
Applications
| Memory Address Buffering | PCI/ISA Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a 3.3V microcontroller to multiple 5V SRAM chips on a shared bus. IC Role / Device Role / Timing Role: Non-inverting buffer with per-group 3-state control isolates memory banks during access arbitration. Use Value: 5V-tolerant inputs accept controller outputs directly; ±24mA drive ensures fast edge rates into capacitive memory loads. | Use Scenario: Level-shifting and bus-driving between a 3.3V host bridge and legacy 5V PCI add-in cards. IC Role / Device Role / Timing Role: Bidirectional voltage translator and line driver enabling interoperability across voltage domains. Use Value: Sub-5ns propagation delay meets PCI timing budgets; low ground bounce prevents data corruption during burst transfers. |
| Industrial Backplane Interconnect | Test Equipment Signal Conditioning |
Use Scenario: Buffering control signals across a 200mm backplane with stubs and impedance discontinuities. IC Role / Device Role / Timing Role: Transmission-line driver with matched source impedance to reduce reflections and EMI. Use Value: Balanced drive strength and low output skew (<1ns) maintain signal integrity over long traces. | Use Scenario: Isolating DUT signals from test instrumentation using 3-state control during calibration cycles. IC Role / Device Role / Timing Role: Programmable isolation gate with fast enable/disable (≤5.5ns) for precise timing windows. Use Value: High-impedance state leakage ≤±5μA prevents loading of sensitive analog or RF measurement paths. |
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 |
|---|---|---|---|
| 74LCX16244MTCX | Same logic function and 5V tolerance, but uses ON Semiconductor's TSSOP-48 footprint with slightly higher max IOH (–26mA vs –24mA) | Identical bus-driving use cases; minor timing variance (tPHL ≤4.8ns) | Select when sourcing from ON Semi distribution channels or requiring marginally higher drive strength |
| SN74LVC16244ADGGR | Texas Instruments part with identical pinout and 3.3V operation, but only 3.6V max input tolerance (not 5V) | Requires external clamping for 5V inputs; unsuitable for true mixed-voltage translation | Choose only in 3.3V-only systems where cost or TI ecosystem preference outweighs 5V tolerance need |
Compared with 74LCX16244MTCX and SN74LVC16244ADGGR, PI74LCX16244AEX uniquely delivers guaranteed 5V-tolerant I/O within the same TSSOP-48 package while maintaining sub-5ns timing and industrial temperature rating - critical for legacy system upgrades and mixed-voltage backplanes.
Availability
PI74LCX16244AEX is available at Aetrix Electronics and suitable for memory subsystem design, industrial backplane interconnect, PCI bus bridging, and test equipment signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for PI74LCX16244AEX 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-speed interface, timing, and signal-integrity solutions, acquired by Diodes Incorporated in 2017; its portfolio continues under Diodes' signal integrity product line.
The PI74LCX family targets low-voltage, high-speed digital interface applications including memory buffering, bus driving, and voltage translation in computing, communications, and industrial systems.
FAQ
Is PI74LCX16244AEX pin-compatible with standard 74-series 16244 devices?
Yes - it uses the industry-standard 48-pin TSSOP footprint and matches the pinout of 74FCT16244, 74LVT16244, and other 16244-family buffers. All 16 inputs, 16 outputs, four OE controls, VDD, and GND align identically, enabling drop-in replacement in existing layouts.
What is the maximum capacitive load this device can drive reliably?
Based on characterization at CL = 50pF and tPHL ≤4.5ns, PI74LCX16244AEX is rated for loads up to 70pF while maintaining timing compliance. For heavier loads (>70pF), derating of VDD or reduction of switching frequency is recommended to preserve signal fidelity.
Does PI74LCX16244AEX support partial power-down?
No - it does not have individual section power gating. However, all outputs enter high-impedance state when their respective OE is HIGH, and inputs exhibit <±5μA leakage in power-down mode (VDD = 0V), enabling safe live insertion and low standby current in system-level sleep states.
Can PI74LCX16244AEX be used in automotive applications?
It is not AEC-Q100 qualified and operates only from –40°C to +85°C, limiting use to under-hood-adjacent or cabin-located industrial-grade modules. For automotive powertrain or ADAS applications, Diodes Incorporated's automotive-qualified PI74LVC16244 variants should be evaluated instead.
PI74LCX16244AEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LCX
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
PI74LCX16244AEX FAQ
1.How can I place an order for PI74LCX16244AEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74LCX16244AEX 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 PI74LCX16244AEX reliable?
The price and inventory of PI74LCX16244AEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LCX16244AEX is usually 5 days.
3.What payment methods are accepted for PI74LCX16244AEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LCX16244AEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74LCX16244AEX?
PI74LCX16244AEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74LCX16244AEX 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 PI74LCX16244AEX?
For technical support, including PI74LCX16244AEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LCX16244AEX requirements.
6.How does Aetrix verify that PI74LCX16244AEX is sourced from the original manufacturer or authorized distributors?
All PI74LCX16244AEX 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 PI74LCX16244AEX meets industry standards.
7.What is the process for return or replacement of PI74LCX16244AEX?
All PI74LCX16244AEX units undergo pre-shipment inspection (PSI). If there is an issue with PI74LCX16244AEX, 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 PI74LCX16244AEX part is unused and in its original packaging.
Return procedure for PI74LCX16244AEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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