CDC906PW PLL Frequency Synthesizer Equivalent & Substitute Parts

Part Overview

The CDC906PW is a PLL Frequency Synthesizer IC manufactured by Texas Instruments, designed for clock and timing applications requiring frequency synthesis up to 167MHz. This device features integrated PLL with bypass capability, LVCMOS/Crystal inputs, and LVCMOS outputs in a compact 20-TSSOP surface mount package.

The CDC906PW carries a "Not For New Designs" product status, indicating Texas Instruments has discontinued active development for this component. This status necessitates identifying functionally equivalent alternatives for ongoing production requirements and new design implementations.

Key Parameters

Parameter	Value
Type	PLL Frequency Synthesizer
Maximum Frequency	167MHz
Input Type	LVCMOS, Crystal
Output Type	LVCMOS
Input:Output Ratio	1:6
Supply Voltage	3V ~ 3.6V
Operating Temperature Range	0°C ~ 70°C
Package Type	20-TSSOP (0.173", 4.40mm Width)
Number of Circuits	1
PLL with Bypass	Yes
Divider/Multiplier	Yes/Yes

Substitute Part Grouping Explanation

Substitution eligibility for the CDC906PW is determined by strict parametric equivalence across the following critical parameters:

Frequency Specification: Maximum operating frequency of 167MHz or greater
Package Configuration: 20-TSSOP surface mount package with identical pinout and mechanical dimensions
Electrical Interface: LVCMOS/Crystal input compatibility and LVCMOS output capability
Supply Voltage Range: 3V to 3.6V operation
Functional Architecture: PLL with bypass mode, integrated divider and multiplier circuits
Input:Output Ratio: 1:6 frequency synthesis capability
Operating Temperature: 0°C to 70°C range support

The CDCE906PW meets all substitution criteria as a parametric equivalent, maintaining identical electrical specifications, package footprint, and functional performance characteristics.

Parameter Comparison

Parameter	CDC906PW	CDCE906PW	Match
Manufacturer	Texas Instruments	Texas Instruments	✓
Type	PLL Frequency Synthesizer	PLL Frequency Synthesizer	✓
Maximum Frequency	167MHz	167MHz	✓
Input Type	LVCMOS, Crystal	LVCMOS, Crystal	✓
Output Type	LVCMOS	LVCMOS	✓
Input:Output Ratio	1:6	1:6	✓
Supply Voltage	3V ~ 3.6V	3V ~ 3.6V	✓
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	✓
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	✓
Number of Circuits	1	1	✓
PLL with Bypass	Yes	Yes	✓
Divider/Multiplier	Yes/Yes	Yes/Yes	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Not For New Designs	Active	Substitute Preferred

Engineering Selection Recommendations

The CDCE906PW is the direct parametric equivalent for CDC906PW replacement applications. Both devices are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product lifecycle status: CDC906PW is designated "Not For New Designs," while CDCE906PW maintains "Active" status. This status difference reflects Texas Instruments' ongoing support and availability commitment for the CDCE906PW variant.

Both parts maintain equivalent compliance certifications: ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity classification (MSL 1). Supply chain availability favors CDCE906PW, with higher inventory levels supporting production continuity.

For applications currently using CDC906PW, direct substitution with CDCE906PW requires no circuit modifications, PCB layout changes, or firmware adjustments. Pin-for-pin compatibility and functional equivalence are guaranteed across all operating parameters within the specified ranges.

Frequently Asked Questions (FAQ)

Q: Can CDCE906PW replace CDC906PW in existing designs without modification?

A: Yes. CDCE906PW is a direct parametric equivalent with identical pinout, package footprint, and electrical specifications. No circuit modifications or PCB redesign is required.

Q: What is the significance of the "Not For New Designs" status on CDC906PW?

A: This designation indicates Texas Instruments has concluded active development and support for CDC906PW. CDCE906PW, carrying "Active" status, represents the current supported alternative with equivalent functionality.

Q: Are the package dimensions identical between CDC906PW and CDCE906PW?

A: Yes. Both devices use the 20-TSSOP package with 0.173" width and 4.40mm body width. PCB footprints are mechanically and electrically compatible.

Q: Do both parts meet the same compliance requirements?

A: Yes. CDC906PW and CDCE906PW both maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity classification.

Q: What are the critical parameters for substitution eligibility?

A: Substitution requires matching: 167MHz maximum frequency, 20-TSSOP package, LVCMOS/Crystal input, LVCMOS output, 3V-3.6V supply voltage, 1:6 input:output ratio, PLL with bypass capability, and 0°C-70°C operating temperature range.

Q: Is inventory availability a factor in selecting between these parts?

A: CDCE906PW maintains higher inventory levels (2057 pcs vs 1165 pcs), supporting improved supply chain reliability for production requirements.

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