CPPC4-A7B6-16.384PD Equivalent & Substitute Parts

Part Overview

The CPPC4-A7B6-16.384PD is a 16.384 MHz XO (Standard) CMOS oscillator manufactured by Cardinal Components Inc., designed for applications requiring a 5V standby (power down) function. This through-hole component operates across the -40°C to 85°C temperature range with ±100ppm frequency stability. The part is currently obsolete, making identification of functionally equivalent substitutes essential for system maintenance, repair, and legacy product support.

Key Parameters

Parameter	Value
Frequency	16.384 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
Base Resonator	Crystal
Type	XO (Standard)
Current Supply (Max)	45mA
Current Supply (Disable) (Max)	50µA
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CPPC4-A7B6-16.384PD is determined by strict alignment of the following critical parameters:

Frequency Match: 16.384 MHz (exact)
Supply Voltage: 5V (exact)
Standby/Power Down Function: Required
Operating Temperature Range: -40°C ~ 85°C (minimum coverage)
Frequency Stability: ±100ppm (maximum tolerance)
Mounting Type: Through Hole
Base Resonator: Crystal
Type: XO (Standard)

The MXO45-2I-16M384000 from CTS-Frequency Controls meets all critical substitution criteria. While the output type differs (HCMOS/TTL vs. CMOS) and package dimensions vary, both parameters remain within acceptable electrical and mechanical compatibility boundaries for through-hole oscillator applications.

Parameter Comparison

Parameter	CPPC4-A7B6-16.384PD	MXO45-2I-16M384000
Manufacturer	Cardinal Components Inc.	CTS-Frequency Controls
Frequency	16.384 MHz	16.384 MHz
Output Type	CMOS	HCMOS, TTL
Supply Voltage	5V	5V
Function	Standby (Power Down)	Standby (Power Down)
Frequency Stability	±100ppm	±100ppm
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C
Current Supply (Max)	45mA	26mA
Current Supply (Disable) (Max)	50µA	10µA
Mounting Type	Through Hole	Through Hole
Package / Case	8-DIP (0.300", 7.62mm), 4 Leads	14-DIP, 4 Leads (Full Size, Metal Can)
Size / Dimension	0.520" L x 0.520" W (13.20mm x 13.20mm)	0.819" L x 0.520" W (20.80mm x 13.20mm)
Height - Seated (Max)	0.256" (6.50mm)	0.240" (6.10mm)
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MXO45-2I-16M384000 is the qualified substitute for the CPPC4-A7B6-16.384PD based on the following factors:

Frequency and Stability Match: Both parts operate at 16.384 MHz with ±100ppm stability, ensuring direct functional equivalence in timing-critical applications.
Supply Voltage Compatibility: Both parts operate at 5V, maintaining electrical compatibility with existing circuit designs.
Standby Function Parity: Both parts include standby (power down) capability, preserving power management functionality.
Temperature Range Coverage: Both parts cover -40°C to 85°C, ensuring operation across the same environmental conditions.
Active Product Status: The MXO45-2I-16M384000 is currently active, providing long-term availability and supply chain continuity compared to the obsolete CPPC4-A7B6-16.384PD.
Enhanced Compliance: The MXO45-2I-16M384000 meets ROHS3 compliance, exceeding the RoHS compliance of the original part.
Improved Power Efficiency: The substitute exhibits lower maximum supply current (26mA vs. 45mA) and lower disable current (10µA vs. 50µA), offering power consumption advantages.

Frequently Asked Questions (FAQ)

Q: Can the MXO45-2I-16M384000 directly replace the CPPC4-A7B6-16.384PD in existing PCB designs?

A: Direct PCB replacement requires physical board modification. The MXO45-2I-16M384000 uses a 14-DIP package (0.819" L x 0.520" W) compared to the original 8-DIP package (0.520" L x 0.520" W). Pin configuration and lead count differ, necessitating circuit board redesign or adapter solutions.

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

A: HCMOS and TTL outputs are backward compatible with CMOS input stages in 5V logic circuits. The MXO45-2I-16M384000 output will interface correctly with standard CMOS logic receivers designed for 5V operation.

Q: What is the impact of the frequency stability difference?

A: Both parts specify ±100ppm frequency stability. No stability degradation occurs with substitution.

Q: Does the lower supply current of the substitute affect circuit operation?

A: Lower supply current (26mA vs. 45mA) represents improved efficiency and does not negatively impact circuit operation. Existing power supply designs will continue to function correctly.

Q: Are there supply chain advantages to using the MXO45-2I-16M384000?

A: Yes. The MXO45-2I-16M384000 is an active product with 897 pieces in stock, compared to the obsolete CPPC4-A7B6-16.384PD. Active product status ensures continued availability and support.

Q: What compliance certifications apply to the substitute part?

A: The MXO45-2I-16M384000 is ROHS3 compliant, REACH unaffected, and carries EAR99 ECCN classification, matching the regulatory framework of the original part.

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