AY0438/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock

Name: AY0438/P
Brand: Microchip
SKU: AY0438/P
Availability: InStock

Microchip AY0438 is a serial-input LCD driver capable of driving up to 4-digit, 32-segment static liquid crystal displays directly from a single serial data line. Packaged in a 40-pin PDIP for easy breadboard prototyping.

OBSOLETEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

AY0438/PDual-In-Line Packages

Quick Facts

Manufacturer: Microchip
Package: Dual-In-Line Packages
Pin Count: 40
Lifecycle: OBSOLETE
Datasheet: AY0438/P Datasheet PDF
Category: Integrated Circuit
Price: From $3.8600(MOQ 100)
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of AY0438/P?

Serial input interface drives up to 32 LCD segments from a single data line, minimizing MCU I/O pin consumption
Static drive mode for 4-digit LCD panels eliminates multiplexing circuitry and reduces firmware complexity
Wide supply voltage compatibility and 40-pin PDIP package simplify prototyping and legacy industrial display replacement

What is AY0438/P used for?

The AY0438/P is used in digital panel meters, industrial counters, and laboratory instruments that display 4-digit numeric readings on low-power static LCD panels. Its serial input requires only 3 MCU pins to refresh all 32 segments, making it popular in legacy instrument retrofits and low-volume production runs. Battery-operated measurement tools such as multimeters and thermometers also rely on its low-power static drive mode to maximize runtime.

What are the specifications of AY0438/P?

Pbfree Code	Yes
Manufacturer Package Code	PDIP-40
YTEOL	0
Data Input Mode	SERIAL
Display Mode	SEGMENT
Interface IC Type	LIQUID CRYSTAL DISPLAY DRIVER
JESD-30 Code	R-PDIP-T40
JESD-609 Code	e3
Multiplexed Display Capability	NO
Number of Digits/Characters	4-DIGIT
Number of Functions	1
Number of Segments	32
Output Polarity	TRUE
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP40,.6
Package Shape	RECTANGULAR
Package Style	IN-LINE
Qualification Status	Not Qualified
Supply Current-Max	0.06mA
Supply Voltage-Max	8.5V
Supply Voltage-Min	3V
Supply Voltage-Nom	5V
Surface Mount	NO
Technology	CMOS
Temperature Grade	COMMERCIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
fmax-Min	1.5MHz
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.31.00.01
Country of Origin	Thailand

Where can I find the AY0438/P datasheet?

AY0438/P Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for AY0438/P?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How many LCD segments can the AY0438 drive, and does it support multiplexed panels?

The AY0438 drives up to 32 static LCD segments covering a 4-digit display. It does not support multiplexed drive modes; all segments are driven simultaneously in static mode, which yields higher contrast and eliminates the flicker seen in 1/4-duty multiplexed panels.

How does serial input on the AY0438 reduce MCU GPIO requirements compared to parallel LCD drivers?

The AY0438 accepts display data over a 3-wire serial interface (data, clock, and latch), consuming only 3 MCU output pins to update all 32 segments, compared to 32 GPIO lines needed for a direct-drive parallel approach — saving 29 I/O pins on a typical 8-bit microcontroller.

In which industrial enclosure formats does the 40-pin PDIP package fit, and what board spacing is required?

The 40-pin PDIP package has a 2.54 mm (100 mil) pin pitch with a row spacing of 15.24 mm (600 mil), fitting standard 40-pin DIP sockets. This lets designers use socketed prototyping boards and facilitates field replacement without soldering rework equipment.

For a handheld meter design, how does the AY0438 static drive mode affect battery life versus a multiplexed LCD controller?

Static LCD drive keeps all segment voltages continuously applied, eliminating the 1/4-duty switching losses seen in multiplexed controllers. In a 3 V coin-cell-powered meter, static drive can reduce LCD controller supply current by 30–50 µA compared to multiplexed alternatives, extending battery life by weeks in low-update-rate instruments.

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AvailabilityIn Stock

Reference Price (USD)

From $3.8600

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
100+	$4.1300	$413.00
900+	$4.0400	$3636.00
1800+	$3.8600	$6948.00

pcs

Unit price: $4.1300 · Total: $413.00

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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AY0438/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of AY0438/P?

What is AY0438/P used for?

What are the specifications of AY0438/P?

Compliance & Regulatory

Where can I find the AY0438/P datasheet?

What are equivalent replacements for AY0438/P?

Frequently Asked Questions

How many LCD segments can the AY0438 drive, and does it support multiplexed panels?

How does serial input on the AY0438 reduce MCU GPIO requirements compared to parallel LCD drivers?

In which industrial enclosure formats does the 40-pin PDIP package fit, and what board spacing is required?

For a handheld meter design, how does the AY0438 static drive mode affect battery life versus a multiplexed LCD controller?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Microchip

More from Microchip

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