CDC906PWG4 PLL Frequency Synthesizer Equivalent & Substitute Parts

Part Overview

The CDC906PWG4 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 a Phase-Locked Loop with bypass capability, supporting both LVCMOS and Crystal inputs with LVCMOS output configuration. The part is packaged in a 20-TSSOP surface mount package and operates across a 3V to 3.6V supply voltage range.

The CDC906PWG4 is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	CDC906PWG4
Manufacturer	Texas Instruments
Category	Clock/Timing
Type	PLL Frequency Synthesizer
Frequency - Max	167MHz
Voltage - Supply	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Input Type	LVCMOS, Crystal
Output Type	LVCMOS
PLL with Bypass	Yes
Divider/Multiplier	Yes/Yes
Input:Output Ratio	1:6
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CDC906PWG4 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

PLL Frequency Synthesizer type with bypass capability
Maximum frequency: 167MHz
Supply voltage range: 3V ~ 3.6V
Operating temperature: 0°C ~ 70°C
Input configuration: LVCMOS and Crystal support
Output configuration: LVCMOS
Input:Output ratio: 1:6
Package type: 20-TSSOP (0.173", 4.40mm Width)
Surface mount mounting type
Divider and Multiplier functionality

Substitute parts are categorized by their product status and availability. All identified substitutes maintain identical electrical specifications and mechanical compatibility with the original CDC906PWG4.

Parameter Comparison

Parameter	CDC906PWG4 (Main Part)	CDCE906PW (Parametric Equivalent)	CDC906PW (MFR Recommended)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Type	PLL Frequency Synthesizer	PLL Frequency Synthesizer	PLL Frequency Synthesizer
Frequency - Max	167MHz	167MHz	167MHz
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Input Type	LVCMOS, Crystal	LVCMOS, Crystal	LVCMOS, Crystal
Output Type	LVCMOS	LVCMOS	LVCMOS
PLL with Bypass	Yes	Yes	Yes
Input:Output Ratio	1:6	1:6	1:6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Active	Not For New Designs

Engineering Selection Recommendations

CDCE906PW is the primary substitute for the CDC906PWG4. This part maintains complete electrical and mechanical equivalence while offering the advantage of Active product status, ensuring ongoing availability and manufacturer support. The CDCE906PW is verified for programmability and carries ROHS3 compliance with MSL 1 rating, matching all critical specifications of the original part.

CDC906PW is the manufacturer-recommended alternative. While electrically and mechanically identical to the CDC906PWG4, this part carries a "Not For New Designs" status, indicating it is in the later stages of its product lifecycle. CDC906PW remains suitable for legacy system maintenance and repair applications where component continuity is required.

Both substitute parts are fully compatible with existing designs utilizing the CDC906PWG4, requiring no circuit modifications or design changes.

Frequently Asked Questions (FAQ)

Q: Can CDCE906PW be used as a direct replacement for CDC906PWG4?

A: Yes. CDCE906PW is a parametric equivalent with identical electrical specifications, supply voltage range, frequency capability, input/output configuration, and 20-TSSOP package. No circuit modifications are required.

Q: What is the difference between CDCE906PW and CDC906PW?

A: Both parts are electrically and mechanically equivalent to CDC906PWG4. The primary difference is product status: CDCE906PW is Active with verified programmability, while CDC906PW is designated "Not For New Designs." For new production, CDCE906PW is preferred. CDC906PW is suitable for maintenance and legacy applications.

Q: Are there any packaging differences between these parts?

A: All three parts use the 20-TSSOP (0.173", 4.40mm Width) surface mount package. Packaging format differs only in supplier delivery method (tube packaging for substitutes versus the original part specification). This does not affect electrical or mechanical compatibility.

Q: Do these substitutes support the same input and output configurations?

A: Yes. All parts support LVCMOS and Crystal inputs with LVCMOS output, maintaining the 1:6 input:output ratio and PLL bypass capability.

Q: Are compliance certifications identical across all parts?

A: Yes. CDC906PWG4, CDCE906PW, and CDC906PW all carry ROHS3 compliance, MSL 1 (Unlimited) rating, and REACH Unaffected status.

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