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PCF85176T/1Y
NXP USA Inc.
40 X 4 UNIVERSAL LCD DRIVER FOR
27129 Pcs New Original In Stock
LCD Driver 56-TSSOP
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5.0 / 5.0
- (225 Ratings)
PCF85176T/1Y
Product Overview
10227920
DiGi Electronics Part Number
PCF85176T/1Y-DGManufacturer
NXP USA Inc.
PCF85176T/1Y
Description
40 X 4 UNIVERSAL LCD DRIVER FORInventory
27129 Pcs New Original In Stock
LCD Driver 56-TSSOP
Quantity
Minimum 1
Minimum 1
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PCF85176T/1Y Technical Specifications
Category
Power Management (PMIC), Display Drivers
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Display Type
LCD
Configuration
40 Segment
Interface
I2C
Digits or Characters
10 Characters, 20 Characters, 160 Elements
Current - Supply
3.5 µA
Voltage - Supply
1.8V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
56-TFSOP (0.240", 6.10mm Width)
Supplier Device Package
56-TSSOP
Base Product Number
PCF85176
Datasheet & Documents
HTML Datasheet
PCF85176T/1Y-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
568-PCF85176T/1YCT
568-PCF85176T/1YDKR
935290075518
568-PCF85176T/1YTR
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Reliable delivery times mean I can plan my operations without worry.
Dec 02, 2025
DiGi Electronics offers products with excellent performance and reliability.
Dec 02, 2025
Their combination of quality, safety in packaging, and cost savings makes them stand out in the market.
Dec 02, 2025
The post-purchase support from DiGi Electronics is both professional and caring.
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Frequently Asked Questions (FAQ)
How does the PCF85176T/1Y handle supply voltage fluctuations in automotive environments, and what design considerations should be made to ensure stable LCD driving performance under real-world conditions?
The PCF85176T/1Y operates over a wide 1.8V to 5.5V supply range, making it robust against typical automotive voltage transients. However, in start-stop or cold-crank scenarios where voltage dips occur, it's critical to use a stable LDO with adequate decoupling (e.g., 100nF ceramic capacitor close to VDD) to prevent brown-out resets. Since the device draws only 3.5 µA, it's ideal for always-on applications, but ensure the power rail noise stays below 100mVpp to avoid segment crosstalk. Designers should also verify I2C pull-up strength at lower voltages to maintain reliable communication in low-power modes.
Can the PCF85176T/1Y replace the MAX6955 in a legacy industrial display design, and what are the key interface and timing compatibility risks?
While both the PCF85176T/1Y and MAX6955 drive multiplexed LCDs via I2C, direct replacement requires careful assessment. The PCF85176T/1Y supports a 40-segment, 4-common configuration ideal for 10–20 character displays, whereas the MAX6955 uses different addressing and register mapping. You must rework firmware to match the PCF85176T/1Y's native I2C slave address and configuration registers. Additionally, the MAX6955 includes built-in blink and dimming features; replicate these in software or with external PWM control when using the PCF85176T/1Y. Validate timing specs, especially I2C clock stretching during display updates.
What are the risks of using the PCF85176T/1Y in high-temperature industrial applications near the 85°C limit, and how can contrast degradation be mitigated?
Operating the PCF85176T/1Y at the upper end of its 85°C temperature range can lead to reduced LCD contrast due to increased ion mobility in the liquid crystal material, not driver failure. To mitigate this, optimize the LCD bias voltage and adjust the driver's internal voltage follower or external resistor ladder network for improved Vop stability. Avoid placing the 56-TSSOP package near heat sources like power regulators. Use thermal vias under the ground pad if PCB space allows, and validate display readability across the full operating range with actual firmware patterns to detect ghosting or crosstalk.
How do I minimize EMI and segment crosstalk when laying out the PCB for the PCF85176T/1Y, especially with long traces to the LCD glass?
To minimize EMI and crosstalk in PCF85176T/1Y designs, keep segment and common traces as short and equidistant as possible, avoiding parallel routing. Use ground shielding between adjacent LCD driver traces if routing density forces proximity. Terminate long lines with small series resistors (10–22Ω) near the driver outputs to damp ringing. Route the I2C interface away from high-impedance LCD traces, and use pull-up resistors ≤4.7kΩ to reduce rise time EMI. Always connect the 56-TSSOP package's exposed thermal pad to ground via multiple vias to stabilize reference potential and improve noise immunity.
Is the PCF85176T/1Y suitable for direct replacement of the HD66715 in legacy consumer electronics, and what compatibility issues should be addressed in hardware and firmware?
Replacing the HD66715 with the PCF85176T/1Y requires significant adaptation due to architectural differences. The HD66715 uses an 8-bit parallel interface and internal oscillator, while the PCF85176T/1Y relies solely on I2C and consumes significantly less power. You must convert the control interface using a microcontroller or I2C logic bridge if the original design lacks I2C capability. Additionally, the HD66715 drives simpler STN displays without integrated charge pumps—ensure the new LCD module matches the PCF85176T/1Y's built-in bias generation. Firmware must be rewritten to handle register-based configuration and avoid exceeding I2C clock rate limits (400 kHz max).
Quality Assurance (QC)
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PCF85176T/1Y CAD Models
NXP USA Inc. PCF85176T/1Y PCB symbols & footprints
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