TL851CNG4 Equivalent & Substitute Parts

Part Overview

The TL851CNG4 is a sonar ranging control integrated circuit manufactured by Texas Instruments, designed for RF sonar control applications operating in the 20kHz to 90kHz frequency range. This device features synchronous 4-bit gain control and is packaged in a 16-DIP through-hole configuration.

The TL851CNG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and maintenance applications.

Substiute Parts

TL851CNG4

Texas InstrumentsIn Stock: 1186TL851CNG4 Datasheet

Current PartRFQ

TL851CN

Texas InstrumentsIn Stock: 1455TL851CN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TL851CNG4 is determined by the following critical parameters:

• Function: Sonar Ranging Control capability
• Frequency Range: 20kHz ~ 90kHz operation
• RF Type: Sonar Control
• Secondary Attributes: Synchronous 4-Bit Gain Control
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Supplier Device Package: 16-PDIP
• Compliance: ROHS3 Compliant, REACH Unaffected

The TL851CN meets all substitution criteria and shares the same base product number (TL851), functional specifications, frequency range, and physical packaging requirements as the TL851CNG4.

Parameter Comparison

Engineering Selection Recommendations

The TL851CN is a direct substitute for the TL851CNG4 based on electrical and mechanical parameter equivalence. The TL851CN maintains active product status with Texas Instruments, ensuring ongoing availability and supply chain continuity. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The identical package configuration (16-DIP, 0.300" spacing) and pinout enable direct board-level replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Can the TL851CN be used as a direct replacement for the TL851CNG4?

A: Yes. The TL851CN is electrically and mechanically equivalent to the TL851CNG4. Both devices share identical functional specifications, frequency range (20kHz ~ 90kHz), gain control architecture, and 16-DIP packaging. Direct substitution is supported at the board level.

Q: What is the difference between TL851CNG4 and TL851CN?

A: The primary difference is product status. The TL851CNG4 is discontinued at DiGi Electronics, while the TL851CN remains in active production. The suffix variation (CNG4 vs. CN) reflects packaging or distribution channel differences, but electrical and functional specifications are identical.

Q: Are there any pin compatibility concerns?

A: No. Both parts use the 16-PDIP package with identical pin assignments and spacing (0.300", 7.62mm). No PCB layout modifications are required for substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TL851CNG4 and TL851CN are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: What is the base product number?

A: The base product number for both parts is TL851. Suffix variations (CNG4, CN) indicate packaging or distribution variants of the same core device.