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CD74HC4020M96G4
Texas Instruments
IC BINARY COUNTER 14-BIT 16SOIC
2132 Pcs New Original In Stock
Counter IC Binary Counter 1 Element 14 Bit Negative Edge 16-SOIC
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5.0 / 5.0
- (469 Ratings)
CD74HC4020M96G4
Product Overview
1234933
DiGi Electronics Part Number
CD74HC4020M96G4-DGManufacturer
Texas Instruments
CD74HC4020M96G4
Description
IC BINARY COUNTER 14-BIT 16SOICInventory
2132 Pcs New Original In Stock
Counter IC Binary Counter 1 Element 14 Bit Negative Edge 16-SOIC
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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CD74HC4020M96G4 Technical Specifications
Category
Logic, Counters, Dividers
Packaging
-
Series
74HC
Product Status
Discontinued at Digi-Key
Logic Type
Binary Counter
Direction
Up
Number of Elements
1
Number of Bits per Element
14
Reset
Asynchronous
Timing
-
Count Rate
35 MHz
Trigger Type
Negative Edge
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.154", 3.90mm Width)
Supplier Device Package
16-SOIC
Base Product Number
74HC4020
Datasheet & Documents
HTML Datasheet
CD74HC4020M96G4-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Standard Package
2,500
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
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Dec 02, 2025
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Dec 02, 2025
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Frequently Asked Questions (FAQ)
Is the CD74HC4020M96G4 still a viable choice for new designs given that it's discontinued at Digi-Key, and what are the key risks in relying on remaining stock?
Although the CD74HC4020M96G4 is discontinued at Digi-Key, it remains functional and RoHS3-compliant, but using it in new designs introduces supply chain risk. With only limited inventory (2056 pcs reported), long-term availability is uncertain, making it unsuitable for high-volume or future-proof applications. Designers should consider qualified alternatives like the MC74HC4020ADG or 74HC4020D,653, which are actively stocked and pin-compatible. If you must use the CD74HC4020M96G4, secure lifetime buy quantities and validate second-source compatibility early to mitigate obsolescence risk.
Can I directly replace the CD74HC4020M96G4 with the MC74HC4020ADR2G in an existing 5V system without circuit modifications?
Yes, the MC74HC4020ADR2G is a direct functional and pin-compatible replacement for the CD74HC4020M96G4 in 5V systems, as both are 74HC-series 14-bit binary counters with identical timing, voltage range (2V–6V), and negative-edge triggering. However, verify the PCB footprint: the MC74HC4020ADR2G uses a standard 16-SOIC package with 1.27mm pitch, matching the CD74HC4020M96G4’s 16-SOIC (3.90mm width). Ensure your layout accommodates minor mechanical variations, and revalidate signal integrity at your operating frequency—especially near the 35 MHz count rate limit—to confirm stable operation post-swap.
What design constraints should I consider when operating the CD74HC4020M96G4 near its maximum count rate of 35 MHz in a noisy industrial environment?
Operating the CD74HC4020M96G4 near 35 MHz demands careful attention to power integrity, signal routing, and grounding. At high frequencies, parasitic inductance and capacitive coupling can cause glitches or missed counts, especially in electrically noisy environments. Use a solid ground plane, place decoupling capacitors (100nF ceramic) within 2mm of VCC and GND pins, and minimize trace lengths to clock inputs. Avoid routing high-speed signals parallel to counter outputs to prevent crosstalk. Additionally, ensure your clock source has sharp edges (<10 ns rise/fall time) since the CD74HC4020M96G4 is negative-edge triggered—slow transitions may cause double-counting or metastability.
How does the asynchronous reset behavior of the CD74HC4020M96G4 affect system reliability during power-up or brownout conditions, and how can I mitigate unintended resets?
The CD74HC4020M96G4 features an asynchronous reset that immediately clears all flip-flops when asserted, which can lead to unpredictable states during power-up or voltage dips if not properly managed. Since HC logic thresholds are voltage-dependent, a slow-rising VCC may cause the reset pin to float or trigger falsely. To ensure reliable startup, tie the reset pin through a 10kΩ pull-up resistor to VCC and add a 100nF capacitor to ground to create a power-on reset delay. For brownout protection, consider using a supervisory IC (e.g., TPS3839) to drive the reset line only when VCC is stable above 2V, preventing erratic counter behavior during transient dips.
Can the CD74HC4020M96G4 be used in automotive applications given its -55°C to 125°C operating temperature range, and what qualification gaps should I evaluate?
While the CD74HC4020M96G4 meets the temperature range (-55°C to 125°C) required for some automotive environments, it lacks AEC-Q100 qualification and is not rated for automotive use by Texas Instruments. This means it hasn’t been tested for long-term reliability under automotive stress conditions like thermal cycling, humidity, or vibration. If your application requires functional safety or compliance with ISO 26262, avoid using the CD74HC4020M96G4. Instead, select an AEC-Q100-certified alternative such as the MC74HC4020ADG (which is automotive-grade) to ensure traceability, reliability, and compliance with industry standards.
Quality Assurance (QC)
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CD74HC4020M96G4 CAD Models
Texas Instruments CD74HC4020M96G4 PCB symbols & footprints
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