CDCDB800RSLT Equivalent & Substitute Parts

Part Overview

The CDCDB800RSLT is an active clock buffer integrated circuit manufactured by Texas Instruments, designed for high-speed clock distribution applications. This device functions as a 1:8 clock buffer with a maximum frequency rating of 250 MHz, supporting HCSL (High-Speed Current Logic) differential input and output signaling. The part is supplied in a 48-pin VFQFN package with exposed pad and is currently in active production status. Equivalent and substitute parts are identified to address supply chain requirements, packaging preferences, and compliance specifications while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Clock/Timing
Type	Clock Buffer
Number of Circuits	1
Ratio - Input:Output	1:8
Differential - Input:Output	Yes/Yes
Input Signal Type	Clock, HCSL
Output Signal Type	Clock, HCSL
Frequency - Max	250 MHz
Voltage - Supply	3V ~ 3.6V
Operating Temperature Range	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount
Package / Case	48-VFQFN Exposed Pad
Supplier Device Package	48-VQFN (6x6)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the CDCDB800RSLT is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Clock buffer function with 1:8 input-to-output ratio
HCSL differential input and output signaling
Maximum frequency of 250 MHz
Supply voltage range of 3V to 3.6V
Operating temperature range of -40°C to 105°C

Mechanical Equivalence Criteria:

48-pin VFQFN package with exposed pad
6x6 mm supplier device package footprint
Surface mount mounting type

Packaging Variations: Substitute parts are available in two packaging formats: Tape & Reel (TR) and Cut Tape (CT) with Digi-Reel®. These packaging variations do not affect electrical or mechanical compatibility and are selected based on procurement and assembly requirements.

Compliance Variations: Certain substitute parts carry ROHS3 compliance and REACH unaffected status, while others are marked as not applicable. These compliance designations do not affect functional equivalence but may be relevant for specific application requirements or regional regulations.

Parameter Comparison

Parameter	CDCDB800RSLT	CDCDB800RSLR	CDCDB803ERSLT	CDCDB803ERSLR	CDCDB803RSLR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	Clock Buffer	Clock Buffer	Clock Buffer	Clock Buffer	Clock Buffer
Number of Circuits	1	1	1	1	1
Ratio - Input:Output	1:8	1:8	1:8	1:8	1:8
Differential - Input:Output	Yes/Yes	Yes/Yes	Yes/Yes	Yes/Yes	Yes/Yes
Input Signal Type	Clock, HCSL	Clock, HCSL	Clock, HCSL	Clock, HCSL	Clock, HCSL
Output Signal Type	Clock, HCSL	Clock, HCSL	Clock, HCSL	Clock, HCSL	Clock, HCSL
Frequency - Max	250 MHz	250 MHz	250 MHz	250 MHz	250 MHz
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V
Operating Temperature Range	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	48-VFQFN Exposed Pad	48-VFQFN Exposed Pad	48-VFQFN Exposed Pad	48-VFQFN Exposed Pad	48-VFQFN Exposed Pad
Supplier Device Package	48-VQFN (6x6)	48-VQFN (6x6)	48-VQFN (6x6)	48-VQFN (6x6)	48-VQFN (6x6)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®
RoHS Status	Not applicable	Not applicable	ROHS3 Compliant	ROHS3 Compliant	Not applicable
REACH Status	Not specified	Not specified	REACH Unaffected	REACH Unaffected	Not specified

Engineering Selection Recommendations

All five parts listed—CDCDB800RSLT, CDCDB800RSLR, CDCDB803ERSLT, CDCDB803ERSLR, and CDCDB803RSLR—are electrically and mechanically equivalent and maintain active product status with Texas Instruments.

Selection Based on Packaging Format:

Tape & Reel (TR): CDCDB800RSLT, CDCDB803ERSLT, CDCDB803ERSLR
Cut Tape (CT) & Digi-Reel®: CDCDB800RSLR, CDCDB803RSLR

Selection Based on Compliance Requirements:

ROHS3 Compliant with REACH Unaffected Status: CDCDB803ERSLT, CDCDB803ERSLR
Not Applicable Compliance Status: CDCDB800RSLT, CDCDB800RSLR, CDCDB803RSLR

Inventory Availability:

CDCDB800RSLR: 16,200 units
CDCDB803RSLR: 3,200 units
CDCDB803ERSLR: 5,001 units
CDCDB800RSLT: 958 units
CDCDB803ERSLT: 926 units

Component selection should be based on procurement requirements, assembly process compatibility with packaging format, and applicable regulatory compliance mandates for the end application.

Frequently Asked Questions (FAQ)

Q: Are all listed parts electrically interchangeable with the CDCDB800RSLT?

A: Yes. All substitute parts maintain identical electrical specifications including 1:8 clock buffer ratio, 250 MHz maximum frequency, HCSL differential signaling, 3V to 3.6V supply voltage, and -40°C to 105°C operating temperature range.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: These are packaging and delivery format variations only. Tape & Reel is supplied on continuous tape for automated assembly lines. Cut Tape & Digi-Reel® is supplied in smaller quantities on cut tape segments. Both formats contain identical components with no electrical or mechanical differences.

Q: Can I substitute CDCDB803ERSLT for CDCDB800RSLT in my design?

A: Yes. Both parts are functionally equivalent across all critical electrical and mechanical parameters. The primary difference is ROHS3 compliance and REACH unaffected status on the CDCDB803ERSLT variant, which may be required depending on application and regional regulations.

Q: Does the 48-VFQFN package footprint differ between any of these parts?

A: No. All parts use the identical 48-pin VFQFN package with exposed pad in a 6x6 mm footprint. PCB layout and assembly processes are directly compatible across all substitute parts.

Q: Which part should I select if I require ROHS3 compliance?

A: Select either CDCDB803ERSLT or CDCDB803ERSLR, both of which carry ROHS3 compliant designation and REACH unaffected status.

Q: Are there any functional differences between CDCDB800 and CDCDB803 series designations?

A: No functional differences exist. Both series maintain identical electrical specifications for clock buffer operation. The series designation variation reflects manufacturing or design revision levels that do not affect performance or compatibility.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts carry MSL 1 (Unlimited), indicating unlimited shelf life under standard storage conditions with no special moisture control requirements.

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