SN74AS163NG4 Equivalent & Substitute Parts

Part Overview

The SN74AS163NG4 is a 4-bit binary counter IC manufactured by Texas Instruments, designed for synchronous counting applications with a maximum count rate of 40 MHz. This component features positive edge triggering, synchronous reset, and operates across a supply voltage range of 4.5 V to 5.5 V with an operating temperature range of 0°C to 70°C. The part is packaged in a 16-DIP (0.300", 7.62mm) through-hole configuration and is ROHS3 compliant.

The SN74AS163NG4 has been discontinued at DiGi Electronics. Equivalent substitute parts are available to maintain design continuity and ensure procurement flexibility for applications requiring 4-bit binary counter functionality.

Substiute Parts

SN74AS163NG4

Texas InstrumentsIn Stock: 953SN74AS163NG4 Datasheet

Current PartRFQ

SN74AS163N

Texas InstrumentsIn Stock: 2824SN74AS163N Datasheet

MFR RecommendedRFQ

SN74ALS163BN

Texas InstrumentsIn Stock: 3601SN74ALS163BN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74AS163NG4 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Functional Parameters:

• Logic Type: Binary Counter
• Number of Bits per Element: 4
• Direction: Up
• Reset Type: Synchronous
• Timing: Synchronous
• Count Rate: 40 MHz
• Trigger Type: Positive Edge

Electrical Parameters:

• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C

Mechanical Parameters:

• Package / Case: 16-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

All substitute parts listed maintain identical functional specifications, electrical ratings, and physical packaging, ensuring direct compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

SN74AS163N (MFR Recommended Substitute): The SN74AS163N is the primary recommended substitute for the discontinued SN74AS163NG4. Both parts share identical series designation (74AS), functional specifications, and electrical parameters. The SN74AS163N maintains active product status with higher inventory availability (2814 Pcs), ensuring reliable procurement. This part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

SN74ALS163BN (Parametric Equivalent): The SN74ALS163BN provides an alternative substitute with equivalent functional and electrical specifications. The primary distinction is the series designation (74ALS versus 74AS), which reflects different logic family implementations. Both families maintain the same 40 MHz count rate, synchronous operation, and 16-DIP packaging. The SN74ALS163BN is active with substantial inventory (3500 Pcs) and full regulatory compliance (ROHS3, REACH unaffected).

Both substitute parts are suitable for direct replacement in applications requiring 4-bit binary counter functionality with the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS163N directly replace the SN74AS163NG4? A: Yes. Both parts are identical in functional specifications, electrical ratings, package configuration, and mounting type. The SN74AS163N is the manufacturer-recommended substitute with active product status.

Q: What is the difference between the 74AS and 74ALS series? A: Both series are TTL logic families that maintain equivalent functional and electrical specifications for this counter application. The 74ALS series represents an advanced low-power variant. For the SN74ALS163BN, all critical parameters including count rate, voltage supply, operating temperature, and package remain identical to the original part.

Q: Are both substitute parts ROHS3 compliant? A: Yes. Both the SN74AS163N and SN74ALS163BN are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Does packaging differ between the main part and substitutes? A: No. All three parts use identical 16-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical compatibility in existing PCB designs without layout modifications.

Q: Which substitute should be selected for new designs? A: The SN74AS163N is recommended as the primary choice due to manufacturer recommendation status and active product availability. The SN74ALS163BN is a valid alternative if supply constraints occur.