PLL1705DBQG4 Equivalent & Substitute Parts

Part Overview

The PLL1705DBQG4 is a PLL Multi-Clock Generator IC manufactured by Texas Instruments, designed for clock and timing applications. This device generates multiple clock outputs from a single input source, operating at a maximum frequency of 36.87MHz with a 1:6 input-to-output ratio. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	PLL1705DBQG4
Manufacturer	Texas Instruments
Type	PLL Multi-Clock Generator
Frequency - Max	36.87MHz
Input	CMOS, Crystal
Output	CMOS
Ratio - Input:Output	1:6
Voltage - Supply	2.7V ~ 3.6V
Operating Temperature	-25°C ~ 85°C
Package / Case	20-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PLL1705DBQG4 is determined by the following critical parameters:

Package / Case: 20-SSOP (0.154", 3.90mm Width) — physical and electrical compatibility
Voltage - Supply: 2.7V ~ 3.6V — power supply compatibility
Operating Temperature: -25°C ~ 85°C — thermal operating range
Input / Output Type: CMOS, Crystal input with CMOS output — signal compatibility
Ratio - Input:Output: 1:6 — functional clock generation capability
Frequency - Max: 36.87MHz or equivalent — timing specification

All substitute parts listed maintain these core parameters, ensuring functional and physical compatibility with designs originally specified for the PLL1705DBQG4.

Parameter Comparison

Parameter	PLL1705DBQG4	PLL1707DBQ	PLL1706DBQ	PLL1708DBQ	PLL1705DBQ
Manufacturer	Texas Instruments	Texas Instruments	Burr Brown	Texas Instruments	Texas Instruments
Frequency - Max	36.87MHz	36.864MHz	36.87MHz	36.87MHz	36.87MHz
Input	CMOS, Crystal	CMOS, Crystal	CMOS, Crystal	CMOS, Crystal	CMOS, Crystal
Output	CMOS	CMOS	CMOS	CMOS	CMOS
Ratio - Input:Output	1:6	1:6	1:6	1:6	1:6
Voltage - Supply	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C
Package / Case	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not Specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

PLL1707DBQ — Manufacturer Recommended Substitute

PLL1707DBQ is the primary recommended substitute. Manufactured by Texas Instruments, it maintains all critical electrical and mechanical parameters of the original PLL1705DBQG4. The maximum frequency specification of 36.864MHz is functionally equivalent to the original 36.87MHz specification. This part carries Active product status and ROHS3 compliance, ensuring long-term availability and regulatory compliance for new designs.

PLL1708DBQ — Parametric Equivalent

PLL1708DBQ is a parametric equivalent manufactured by Texas Instruments with identical electrical specifications and package configuration. Active product status and ROHS3 compliance support continued system support and new production requirements.

PLL1705DBQ — Parametric Equivalent

PLL1705DBQ shares the same base product number as the original part and maintains all critical parameters. Manufactured by Texas Instruments with Active product status and ROHS3 compliance, this variant provides direct functional equivalence.

PLL1706DBQ — Parametric Equivalent

PLL1706DBQ, manufactured by Burr Brown, meets all electrical and mechanical substitution criteria. This part maintains the 36.87MHz frequency specification and identical package configuration. RoHS compliance status is not specified for this variant.

Frequently Asked Questions (FAQ)

Q: Can PLL1707DBQ be used as a direct replacement for PLL1705DBQG4?

A: Yes. PLL1707DBQ maintains all critical electrical parameters including supply voltage (2.7V ~ 3.6V), operating temperature range (-25°C ~ 85°C), input/output types (CMOS, Crystal), frequency specification (36.864MHz), and package configuration (20-SSOP). The frequency difference of 0.006MHz is within typical application tolerances for clock generation circuits.

Q: What is the difference between PLL1705DBQG4 and PLL1705DBQ?

A: Both parts share the same base product number (PLL1705) and maintain identical electrical specifications. The primary difference is product status: PLL1705DBQG4 is obsolete, while PLL1705DBQ is active. For new designs and ongoing production, PLL1705DBQ is the preferred variant.

Q: Are all substitute parts available in the same packaging?

A: Yes. All substitute parts listed are packaged in 20-SSOP (0.154", 3.90mm Width) surface mount configuration, ensuring compatibility with existing PCB layouts and assembly processes.

Q: Which substitute part should be selected for new designs?

A: PLL1707DBQ is recommended for new designs. It is manufactured by Texas Instruments, carries Active product status, maintains ROHS3 compliance, and demonstrates the highest inventory availability among active alternatives.

Q: Are there frequency differences between substitute parts?

A: PLL1707DBQ operates at 36.864MHz, while PLL1706DBQ, PLL1708DBQ, and PLL1705DBQ operate at 36.87MHz. The 0.006MHz difference in PLL1707DBQ is functionally equivalent for standard clock generation applications within the specified operating parameters.

Q: Do all substitute parts meet RoHS compliance requirements?

A: PLL1707DBQ, PLL1708DBQ, and PLL1705DBQ are ROHS3 compliant. PLL1706DBQ RoHS compliance status is not specified in available documentation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message