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Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Diodes Incorporated PI74LCX16374AE

Name: PI74LCX16374AE
Brand: Diodes Incorporated
SKU: PI74LCX16374AE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI74LCX16374AE

Manufacturer:: Diodes Incorporated

Category:: Flip Flops

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

Datasheet:: PI74LCX16374AE.pdf

Description:: IC FF D-TYPE DUAL 8BIT 48TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:4,859

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Product details

Overview

PI74LCX16374AE from Pericom Semiconductor is a 16-bit 3-state register with dual 8-bit clocked D-type flip-flops, 5V-tolerant I/O, 2.0–3.6V V_DD operation, and balanced ±24mA output drive. It functions as a level-translating latch in mixed-voltage systems (3.3V/5.0V), enabling data capture on rising clock edges with independent 3-state control per 8-bit bank for bus isolation in memory interface and address/data latching applications.

For engineers reviewing the PI74LCX16374AE datasheet, PI74LCX16374AE pinout, PI74LCX16374AE application, or PI74LCX16374AE equivalent, key selection criteria include 5V-tolerant input compatibility, 3-state timing (t_PZL/t_PLZ ≤ 6.3 ns), dual-clock enable architecture, low ground bounce, and Pb-free TSSOP-48 packaging for high-density PCB layouts.

Technical Context

The device implements two independent 8-bit edge-triggered D-register banks sharing no internal logic coupling-each with dedicated xCLK and xOE controls. Clock-to-output propagation delay (t_PHL/t_PLH) is specified at ≤6.5 ns under 50 pF load, and output enable/disable times (t_PZL/t_PLZ) are matched within 1.0 ns skew across all outputs.

Its 5V-tolerant inputs operate reliably with 0–5.5V signal swing while powered from 2.7–3.6V V_DD, eliminating external level shifters in 3.3V-core/5V-peripheral interfacing. Power-down mode places both inputs and outputs in high-impedance state when V_DD = 0V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DD Range	2.0V to 3.6V - Enables direct integration into 3.3V logic domains without regulator overhead.
Input Voltage Range	0V to 5.5V - Supports 5V TTL/CMOS signal sources without clamping diodes or external protection.
Output Drive	±24mA at V_DD = 3.0–3.6V - Sustains robust fan-out to 10+ LVTTL loads with controlled edge rates.
Max Clock Frequency	170 MHz at CL = 50 pF - Suitable for high-speed address/data latching in DDR-200-class memory subsystems.
t_PHL/t_PLH	≤6.5 ns - Ensures tight timing margin for setup/hold-critical synchronous interfaces.
ESD Rating	2000V HBM - Meets industrial-grade handling requirements without additional board-level protection.

Pinout & Package

Package: 48-pin 240-mil wide plastic TSSOP (Pb-free & Green, package code A).

Pin/Terminal	Circuit Role	Design Meaning
1, 24	xOE (Active LOW)	Independent 3-state enable for Bank 1 (pins 2–12) and Bank 2 (pins 13–23); asserts high-Z on all outputs when HIGH.
48, 25	xCLK (Rising-edge)	Non-inverted clock inputs; latches D-inputs on LOW-to-HIGH transition; asynchronous to OE.
47–37, 36–27	xDx (Data Inputs)	16 single-ended CMOS inputs; 5V-tolerant; accept 0–5.5V swing regardless of V_DD.
2–12, 13–23	xOx (3-State Outputs)	16 buffered CMOS outputs; driven only when respective xOE = LOW; tri-stated otherwise.
3, 10, 14, 20, 46, 45, 43, 42, 41, 39, 35, 34, 32, 31, 30, 29, 28, 26	GND	18 ground pins distributed for low-inductance return paths and reduced ground bounce during simultaneous switching.
6, 17, 44, 33	V_DD	4 power supply pins placed near I/O banks to minimize V_DD droop and improve noise immunity.

Key Features

Feature	Design Value
5V-Tolerant I/O	Operates with 0–5.5V input signals while powered from 2.0–3.6V V_DD, eliminating discrete level shifters in mixed-voltage buses.
Dual Independent Banks	Two 8-bit sections with separate clock and output-enable controls allow asymmetric latching and selective bus isolation without gating logic.
Balanced Output Drive	±24mA sink/source capability ensures consistent rise/fall times and reduces signal integrity risk in stub-loaded backplanes.
Low Ground Bounce	Optimized pinout and internal layout limit simultaneous switching noise to <0.8V peak, supporting clean timing in high-speed digital systems.
Live Insertion Support	Power-down high-impedance inputs/outputs and zero-current draw at V_DD = 0V enable hot-plug capability in modular backplane designs.

Applications

Memory Interface Latching

Address/Data Bus Isolation

Use Scenario: Capturing and holding 16-bit address or data lines between a 3.3V microcontroller and 5V SRAM or Flash memory.

IC Role / Device Role / Timing Role: Edge-triggered register acting as voltage-translating latch synchronized to system clock edge.

Use Value: Eliminates need for discrete level shifters while maintaining t_SU/t_H margins via 6.5 ns max propagation delay and 2.5 ns setup time.

Use Scenario: Isolating shared 16-bit data bus between two processor domains operating at different supply voltages (e.g., 3.3V FPGA and 5V peripheral ASIC).

IC Role / Device Role / Timing Role: Bidirectional 3-state buffer with independent OE control per 8-bit segment for directional bus arbitration.

Use Value: Prevents contention and leakage current by placing unused bank in high-Z state, leveraging 5V-tolerant I/O for seamless inter-domain signaling.

Industrial Control Backplane

Test Equipment Signal Conditioning

Use Scenario: Latching configuration registers in modular PLC I/O modules where field-side signals are 5V and controller-side logic is 3.3V.

IC Role / Device Role / Timing Role: Robust interface register providing ESD-hardened (2000V HBM), live-insertion-capable signal staging.

Use Value: Enables hot-swap maintenance without system shutdown, supported by zero V_DD current draw and high-impedance I/O during power-off.

Use Scenario: Synchronizing and buffering 16-bit parallel test vectors from a 5V pattern generator to a 3.3V DUT interface board.

IC Role / Device Role / Timing Role: High-speed, low-skew (≤1.0 ns) register ensuring deterministic vector launch timing across all bits.

Use Value: Guarantees sub-nanosecond inter-output alignment critical for setup/hold compliance in automated test equipment timing windows.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state register applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16374ADGGR	3.3V-only I/O (not 5V-tolerant); lower drive (±24mA only at V_DD ≥ 3.0V); same TSSOP-48 footprint.	Requires external level shifters for 5V signal sources; unsuitable for direct 5V bus interfacing.	Select when system operates exclusively at 3.3V and cost sensitivity outweighs mixed-voltage flexibility.
74ALVC16374PAG	Wider V_DD range (1.65–3.6V); identical 5V-tolerant I/O; slightly higher t_PHL (7.5 ns max).	Compatible drop-in replacement for extended low-voltage operation down to 1.65V, but marginally slower timing.	Select when ultra-low V_DD operation (<2.0V) is required and 1 ns added propagation delay is acceptable.

Compared with SN74LVC16374ADGGR and 74ALVC16374PAG, PI74LCX16374AE uniquely delivers guaranteed 5V-tolerant I/O at full speed (170 MHz) across its entire 2.0–3.6V V_DD range-making it optimal for legacy 5V peripheral interfacing without design compromise.

Availability

PI74LCX16374AE is available at Aetrix Electronics and suitable for memory interface latching, industrial backplane staging, and test equipment signal conditioning requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for PI74LCX16374AE 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 (now part of Diodes Incorporated) specialized in high-speed interface, timing, and signal-integrity solutions for computing, communications, and industrial electronics before its 2016 acquisition.

The PI74LCX family targets low-voltage, mixed-signal interfacing applications-designed specifically to bridge 3.3V logic cores with legacy 5V infrastructure while maintaining timing integrity and noise resilience.

FAQ

Can PI74LCX16374AE operate with V_DD = 2.5V while accepting 5V inputs?

Yes. The device is fully specified for 2.0–3.6V V_DD operation and supports 0–5.5V input voltage regardless of supply level. At V_DD = 2.5V, VIH remains 2.0V and VIL stays 0.8V, ensuring reliable logic recognition of 5V TTL signals without damage or degradation.

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

PI74LCX16374AE is characterized up to 50 pF load capacitance, with t_PHL/t_PLH ≤ 6.5 ns and output skew ≤ 1.0 ns. Driving >50 pF increases propagation delay nonlinearly and may violate setup/hold timing; for heavier loads, use series termination or buffer stages per JEDEC guidelines.

Does the device support hot-swap insertion when V_DD is unpowered?

Yes. With V_DD = 0V, all inputs and outputs enter high-impedance state and draw <10 µA total current. This meets live-insertion requirements for modular backplanes, provided board-level ESD protection and current-limiting resistors are implemented per IEC 61000-4-2 Level 3.

How are the two 8-bit banks electrically isolated?

No electrical isolation exists between banks-the device shares one V_DD and GND network, but clock and output-enable signals are physically separate (1CLK/1OE vs. 2CLK/2OE) and internally routed to independent flip-flop arrays. There is no signal coupling or timing dependency between banks beyond common supply noise.

PI74LCX16374AE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74LCX

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

Packaging:: Tube

Product Status:: Obsolete

Function:: Standard

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 2

Number of Bits per Element:: 8

Clock Frequency:: 170 MHz

Max Propagation Delay @ V, Max CL:: 6.2ns @ 3.3V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 24mA, 24mA

Voltage - Supply:: 2V ~ 3.6V

Current - Quiescent (Iq):: 10 µA

Input Capacitance:: 3 pF

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

PI74LCX16374AE FAQ

1.How can I place an order for PI74LCX16374AE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI74LCX16374AE 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 PI74LCX16374AE reliable?

The price and inventory of PI74LCX16374AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74LCX16374AE is usually 5 days.

3.What payment methods are accepted for PI74LCX16374AE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74LCX16374AE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI74LCX16374AE?

PI74LCX16374AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI74LCX16374AE 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 PI74LCX16374AE?

For technical support, including PI74LCX16374AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74LCX16374AE requirements.

6.How does Aetrix verify that PI74LCX16374AE is sourced from the original manufacturer or authorized distributors?

All PI74LCX16374AE 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 PI74LCX16374AE meets industry standards.

7.What is the process for return or replacement of PI74LCX16374AE?

All PI74LCX16374AE units undergo pre-shipment inspection (PSI). If there is an issue with PI74LCX16374AE, 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 PI74LCX16374AE part is unused and in its original packaging.

Return procedure for PI74LCX16374AE:

1.Submit a request within 90 days.

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

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