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Diodes Incorporated PI74LPT16374CAE
- Part No.:
- PI74LPT16374CAE
- Manufacturer:
- Diodes Incorporated
- Category:
- Shift Registers
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74LPT16374CAE.pdf
- Description:
- IC 16BIT REIGSTER 3-ST 48-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,300
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Product details
Overview
PI74LPT16374CAE from Pericom Semiconductor is a 3.3V, 16-bit, dual 8-bit D-type register with 3-state outputs, clocked on rising edge, supporting mixed-voltage (3.3V/5V) I/O operation, ±24 mA output drive, and industrial temperature range (–40°C to +85°C). It functions as a level-translating data latch in bus interface and memory address/data path applications.
For engineers reviewing the PI74LPT16374CAE datasheet, PI74LPT16374CAE pinout, PI74LPT16374CAE application, or PI74LPT16374CAE equivalent, key selection criteria include 3-state enable timing (tPZH/tPHZ ≤ 5.5 ns), 5V-tolerant inputs, balanced high-drive outputs, and TSSOP-48 package compatibility with legacy LCX/LVT systems.
Technical Context
The PI74LPT16374CAE implements two independent 8-bit register banks sharing common clock and output-enable controls, enabling flexible 8-bit or 16-bit data capture. Its dual-bank architecture allows asynchronous loading of two data words per cycle when OE and CLK are coordinated across banks.
It operates in mixed-signal mode: inputs accept 3.3V or 5V logic levels without external level shifters, while outputs drive 3.3V loads or interface directly to 5V buses via 5V-tolerant I/O structure. Hysteresis (150 mV) on all inputs ensures noise immunity in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7V to 3.6V - supports standard 3.3V rail with ±0.3V margin for system tolerance |
| Input Voltage Range | –0.5V to +7.0V - enables direct connection to 5V logic without clamping diodes or external protection |
| Output Drive | ±24 mA - provides robust bus termination and fanout for up to 10 LVTTL loads |
| Propagation Delay | 2.0–5.2 ns (CLK→Q) - ensures sub-200 MHz register operation with timing margin |
| Enable/Disable Time | 1.5–5.5 ns (OE→Q) - supports fast bus arbitration and dynamic bus sharing |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, telecom line cards, and embedded instrumentation |
| Input Hysteresis | 150 mV - suppresses false triggering from slow-rising or noisy control signals |
Pinout & Package
PI74LPT16374CAE is housed in a Pb-free, green, 48-pin TSSOP (Package Code A), 240-mil wide (12.6 mm × 6.2 mm), with 0.5 mm pitch and exposed thermal pad not present. Pin layout follows double-density pinout standard for 16-bit registers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low 3-state output enable | Independent control of each 8-bit bank; HIGH disables outputs to high-Z state |
| 1CLK, 2CLK | Rising-edge clock input | Synchronizes data capture from D inputs to Q outputs on positive transition |
| 1D0–1D7, 2D0–2D7 | Data inputs | 16 single-ended CMOS/TTL-compatible inputs accepting 3.3V or 5V logic |
| 1O0–1O7, 2O0–2O7 | 3-state buffered outputs | 16 high-drive outputs with 5V-tolerant structure and low ground bounce |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce simultaneous switching noise and improve power integrity |
| GND (Pins 4, 10, 15, 21, 28, 39, 45) | Ground reference | Seven GND pins provide low-inductance return paths and minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant I/O | Enables seamless integration into mixed 3.3V/5V systems without external level translators |
| Balanced ±24 mA drive | Ensures signal integrity across long PCB traces and heavy capacitive loads (≤50 pF) |
| Dual 8-bit bank architecture | Allows independent latching of two 8-bit data streams using shared clock and separate OE controls |
| Low ground bounce design | Distributed VCC/GND pins and internal layout minimize ΔI/Δt-induced noise during parallel output switching |
| Industrial temperature rating | Validated operation from –40°C to +85°C supports deployment in uncontrolled ambient environments |
Applications
| PCI Bus Interface | Memory Address Latching |
|---|---|
Use Scenario: Buffering and synchronizing 32-bit PCI address/data multiplexed bus between 3.3V controller and legacy 5V peripherals. IC Role / Device Role / Timing Role: 16-bit registered transceiver providing setup/hold-compliant latching and 5V-tolerant bus isolation. Use Value: Eliminates need for discrete level shifters while meeting PCI timing budgets (tSU = 2.0 ns, tH = 1.5 ns). | Use Scenario: Capturing and holding 16-bit memory address lines from a microcontroller before accessing SRAM or Flash. IC Role / Device Role / Timing Role: Edge-triggered address register with 3-state outputs enabling shared address bus with multiple memory devices. Use Value: Enables zero-wait-state memory access via precise 5.2 ns max propagation delay and low-skew outputs (≤0.5 ns). |
| Industrial PLC I/O Expansion | Test Equipment Data Acquisition |
Use Scenario: Isolating and latching digital I/O status from field sensors operating at 5V into a 3.3V FPGA-based control module. IC Role / Device Role / Timing Role: Voltage-level translating register with hysteresis-enhanced noise immunity for factory-floor EMI environments. Use Value: 150 mV input hysteresis prevents spurious toggling; industrial temp rating ensures reliability in non-climate-controlled cabinets. | Use Scenario: Capturing parallel 16-bit ADC output data synchronized to a system clock in automated test equipment. IC Role / Device Role / Timing Role: High-speed data register with 3-state outputs allowing multiplexed readout by a master controller. Use Value: ±24 mA drive sustains signal integrity across backplane traces; 5.5 ns max OE disable time supports rapid channel switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374ADGGR | 3.3V-only I/O (no 5V tolerance); lower drive (±24 mA same, but no 5V bus drive capability) | Requires external level shifters for 5V bus interfacing; unsuitable for mixed-voltage backplanes | Select when system is fully 3.3V and cost sensitivity outweighs voltage flexibility |
| 74ALVCH16374PAG | Higher speed (tPLH ≤ 3.2 ns), but only 3.6V max VCC; no 5V-tolerant inputs | Limited to 3.3V domains; lacks hysteresis (150 mV), reducing noise margin in industrial settings | Prefer for high-frequency (>150 MHz) pure 3.3V designs where noise immunity is secondary |
Compared with SN74LVC16374ADGGR and 74ALVCH16374PAG, PI74LPT16374CAE uniquely delivers 5V-tolerant I/O, hysteresis-enhanced noise immunity, and verified industrial temperature operation-making it the only choice for robust mixed-voltage register applications requiring field reliability.
Availability
PI74LPT16374CAE is available at Aetrix Electronics and suitable for PCI bus interface, memory address latching, and industrial PLC I/O expansion requiring stable component supply and long-term lifecycle support.
Supply support for PI74LPT16374CAE 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, acquired by Diodes Incorporated in 2017; its legacy products remain widely deployed in industrial and communications infrastructure.
The PI74LPT16374 belongs to Pericom's LPT (Low Power TTL-compatible) logic family, designed specifically for voltage-translation-capable, low-noise, high-drive register applications in mixed-voltage embedded systems.
FAQ
Is PI74LPT16374CAE pin-compatible with standard 16-bit register ICs?
Yes, PI74LPT16374CAE uses industry-standard double-density pinout for 48-pin TSSOP packages, matching pin assignments of 74LVC16374, 74ALVCH16374, and other 16-bit registers. Pin-for-pin compatibility extends to power, ground, clock, OE, and I/O positions, enabling drop-in replacement in existing layouts.
What is the maximum clock frequency supported by PI74LPT16374CAE?
Based on maximum propagation delay (5.2 ns) and minimum pulse width (5.0 ns), PI74LPT16374CAE supports reliable operation up to 100 MHz under typical conditions (VCC = 3.3V, TA = 25°C). At full industrial temperature range (–40°C to +85°C), derating to ≤80 MHz is recommended for timing margin.
Does PI74LPT16374CAE require external pull-up or pull-down resistors on control pins?
No. All control inputs (xCLK, xOE) have built-in hysteresis (150 mV) and TTL-compatible thresholds, eliminating need for external biasing. Input leakage current is ±1 μA, and VIH/VIL specifications ensure clean logic recognition without external resistors-even with slow-rising or unterminated traces.
Can PI74LPT16374CAE drive a 50 pF load at 100 MHz?
Yes. With 50 pF load and 500 Ω termination, propagation delay remains within spec (≤5.2 ns), and output skew is guaranteed ≤0.5 ns. The ±24 mA drive strength ensures <0.5 V overshoot/undershoot and meets rise/fall time requirements (typically <2.5 ns) for 100 MHz toggling under worst-case VCC and temperature conditions.
PI74LPT16374CAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LPT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Register, D-Type
- Output Type:
- Tri-State
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Function:
- Universal
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
PI74LPT16374CAE FAQ
1.How can I place an order for PI74LPT16374CAE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74LPT16374CAE 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 PI74LPT16374CAE reliable?
The price and inventory of PI74LPT16374CAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LPT16374CAE is usually 5 days.
3.What payment methods are accepted for PI74LPT16374CAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LPT16374CAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74LPT16374CAE?
PI74LPT16374CAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74LPT16374CAE 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 PI74LPT16374CAE?
For technical support, including PI74LPT16374CAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LPT16374CAE requirements.
6.How does Aetrix verify that PI74LPT16374CAE is sourced from the original manufacturer or authorized distributors?
All PI74LPT16374CAE 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 PI74LPT16374CAE meets industry standards.
7.What is the process for return or replacement of PI74LPT16374CAE?
All PI74LPT16374CAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LPT16374CAE, 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 PI74LPT16374CAE part is unused and in its original packaging.
Return procedure for PI74LPT16374CAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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