CPPC4-A7B6-40.0PD Equivalent & Substitute Parts

Part Overview

The CPPC4-A7B6-40.0PD is a 40 MHz crystal oscillator manufactured by Cardinal Components Inc., part of the FIPO™ CPP series. This through-hole oscillator provides CMOS output with 5V supply and power-down functionality, designed for applications requiring stable 40 MHz frequency generation. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system support and new designs requiring compatible frequency and electrical characteristics.

Key Parameters

Parameter	Value
Frequency	40 MHz
Output Type	CMOS
Supply Voltage	5V
Function	Standby (Power Down)
Frequency Stability	±100ppm
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package	8-DIP (0.300", 7.62mm), 4 Leads
Current Supply (Max)	45mA
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the CPPC4-A7B6-40.0PD is determined by strict alignment of the following electrical and mechanical parameters:

Frequency: 40 MHz (exact match required)
Output Compatibility: CMOS or HCMOS/TTL (compatible logic families for 5V operation)
Supply Voltage: 5V (exact match required)
Power-Down Function: Standby capability required
Frequency Stability: ±100ppm (minimum specification)
Operating Temperature: -40°C ~ 85°C (minimum range required)
Mounting: Through-hole configuration
Package Form Factor: 8-DIP, 4-lead configuration with compatible physical dimensions

The MXO45HS-2I-40M000000 from CTS-Frequency Controls meets all substitution criteria through matching frequency, voltage, temperature range, stability, and package specifications. The HCMOS/TTL output is electrically compatible with CMOS input requirements in 5V systems.

Parameter Comparison

Parameter	CPPC4-A7B6-40.0PD (Main)	MXO45HS-2I-40M000000 (Substitute)
Manufacturer	Cardinal Components Inc.	CTS-Frequency Controls
Frequency	40 MHz	40 MHz
Output Type	CMOS	HCMOS, TTL
Supply Voltage	5V	5V
Function	Standby (Power Down)	Standby (Power Down)
Frequency Stability	±100ppm	±100ppm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Current Supply (Max)	45mA	40mA
Current Supply (Disable) (Max)	50µA	10µA
Mounting Type	Through Hole	Through Hole
Package / Case	8-DIP (0.300", 7.62mm), 4 Leads	8-DIP, 4 Leads (Half Size, Metal Can)
Size / Dimension	0.520" L x 0.520" W (13.20mm x 13.20mm)	0.520" L x 0.520" W (13.20mm x 13.20mm)
Height - Seated (Max)	0.256" (6.50mm)	0.240" (6.10mm)
Product Status	Obsolete	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The MXO45HS-2I-40M000000 is the direct substitute for the obsolete CPPC4-A7B6-40.0PD. Selection is based on:

Product Status: The substitute is active and currently available, addressing the obsolescence of the original part.
Regulatory Compliance: Both parts maintain RoHS compliance (ROHS3 for the substitute represents current compliance standards). Both carry EAR99 classification and unlimited MSL rating.
Electrical Equivalence: Matching frequency (40 MHz), supply voltage (5V), stability (±100ppm), and temperature range (-40°C ~ 85°C) ensure functional compatibility.
Output Logic Compatibility: HCMOS/TTL output is compatible with CMOS input receivers in 5V systems.
Physical Compatibility: Identical footprint dimensions (0.520" x 0.520") and through-hole 8-DIP configuration enable direct board-level substitution.
Performance Advantage: The substitute exhibits lower disable current (10µA vs. 50µA) and slightly lower active supply current (40mA vs. 45mA).

Frequently Asked Questions (FAQ)

Q: Can the MXO45HS-2I-40M000000 directly replace the CPPC4-A7B6-40.0PD on existing PCBs?

A: Yes. Both parts share identical footprint dimensions (0.520" x 0.520"), through-hole 8-DIP package configuration, and 4-lead pinout. The substitute's maximum seated height (0.240") is lower than the original (0.256"), ensuring clearance compatibility.

Q: Are there output logic compatibility concerns between CMOS and HCMOS/TTL?

A: No. HCMOS and TTL outputs are compatible with CMOS input receivers in 5V systems. The substitute's output will properly drive standard CMOS logic inputs.

Q: What is the significance of the frequency stability specification?

A: Both parts specify ±100ppm frequency stability across the operating temperature range. This parameter determines long-term frequency accuracy and is critical for timing-sensitive applications. Matching this specification ensures equivalent performance.

Q: Does the lower disable current of the substitute affect system design?

A: The substitute's 10µA disable current (versus 50µA for the original) represents improved power efficiency during standby operation. This is a performance advantage requiring no design changes.

Q: Are there supply chain or availability differences between these parts?

A: The original CPPC4-A7B6-40.0PD is obsolete. The MXO45HS-2I-40M000000 is active and currently available, making it the only viable path for new procurement and system support.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS compliant, carry EAR99 export classification, and maintain MSL rating 1 (unlimited moisture sensitivity level). The substitute meets current ROHS3 standards.

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