SY10E137JZ Binary Counter 8-Bit Equivalent & Substitute Parts

Part Overview

The SY10E137JZ is an 8-bit binary counter IC manufactured by Microchip Technology, housed in a 28-PLCC surface mount package. This component functions as a positive edge-triggered counter with asynchronous reset and timing characteristics, operating at a maximum count rate of 2.2 GHz across a supply voltage range of 4.2 V to 5.5 V. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Logic Type	Binary Counter
Number of Bits per Element	8
Number of Elements	1
Direction	Up
Trigger Type	Positive Edge
Reset	Asynchronous
Timing	Asynchronous
Count Rate	2.2 GHz
Voltage - Supply	4.2 V ~ 5.5 V
Operating Temperature	0°C ~ 85°C
Package / Case	28-LCC (J-Lead)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SY10E137JZ are qualified based on the following critical parameters that determine functional compatibility:

Logic Type: Binary Counter (8-bit, single element)
Direction: Up counting
Package / Case: 28-LCC (J-Lead) surface mount
Voltage - Supply: Minimum 4.2 V, maximum 5.5 V or higher
Operating Temperature: 0°C ~ 85°C minimum range
Reset: Asynchronous capability
RoHS Status: ROHS3 Compliant

Substitutes are grouped into two categories: direct equivalents sharing the base product number 10E137, and manufacturer-recommended alternatives with enhanced specifications or improved availability.

Parameter Comparison

Parameter	SY10E137JZ (Main)	MC10E137FNG (Direct)	MC10E016FNG (Recommended)
Manufacturer	Microchip Technology	onsemi	onsemi
Logic Type	Binary Counter	Binary Counter	Binary Counter
Number of Bits per Element	8	8	8
Direction	Up	Up	Up
Trigger Type	Positive Edge	Positive, Negative	Positive, Negative
Reset	Asynchronous	Asynchronous	Asynchronous
Timing	Asynchronous	Asynchronous	Synchronous
Count Rate	2.2 GHz	2.2 GHz	900 MHz
Voltage - Supply	4.2 V ~ 5.5 V	4.2 V ~ 5.7 V	4.2 V ~ 5.7 V
Operating Temperature	0°C ~ 85°C	0°C ~ 85°C	0°C ~ 85°C
Package / Case	28-LCC (J-Lead)	28-LCC (J-Lead)	28-LCC (J-Lead)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Obsolete	Obsolete

Engineering Selection Recommendations

MC10E137FNG serves as the direct equivalent substitute for SY10E137JZ. Both parts share the base product number 10E137, identical bit width and element count, matching package specifications, and equivalent electrical operating ranges. The MC10E137FNG maintains asynchronous timing and count rate performance at 2.2 GHz, with expanded trigger capability supporting both positive and negative edges. Supply voltage range extends to 5.7 V, providing additional operational margin. Both parts are ROHS3 compliant and rated for 0°C to 85°C operation.

MC10E016FNG is the manufacturer-recommended alternative, offered by onsemi with significantly higher inventory availability (36,200 units). This part maintains the same 8-bit counter architecture, package form factor, and voltage/temperature specifications. The primary distinction is synchronous timing operation and reduced count rate of 900 MHz, which represents a functional trade-off suitable for applications not requiring the full 2.2 GHz performance of the original design. All three parts are ROHS3 compliant and REACH unaffected.

Selection between MC10E137FNG and MC10E016FNG depends on timing architecture requirements: asynchronous operation with 2.2 GHz performance favors MC10E137FNG, while synchronous operation with lower speed requirements and superior availability favors MC10E016FNG.

Frequently Asked Questions (FAQ)

Q: Can MC10E137FNG directly replace SY10E137JZ without circuit modifications?

A: Yes. MC10E137FNG is a direct equivalent sharing the base product number 10E137, identical package specifications (28-LCC J-Lead), matching pin configuration, and equivalent electrical characteristics. Both operate asynchronously at 2.2 GHz with 8-bit counting capacity and asynchronous reset.

Q: What is the key difference between MC10E137FNG and MC10E016FNG?

A: MC10E137FNG maintains asynchronous timing and 2.2 GHz count rate matching the original SY10E137JZ. MC10E016FNG operates synchronously with a 900 MHz count rate. Both share identical package, voltage, and temperature specifications. Selection depends on whether the application requires asynchronous operation and high-speed counting performance.

Q: Are all substitute parts compatible with the 28-PLCC package footprint?

A: Yes. SY10E137JZ, MC10E137FNG, and MC10E016FNG all use 28-LCC (J-Lead) surface mount packaging with identical mechanical dimensions suitable for the same PCB footprint.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and rated for 0°C to 85°C operation. Moisture sensitivity levels differ slightly: SY10E137JZ is MSL 2 (1 Year), while both onsemi substitutes are MSL 3 (168 Hours).

Q: What supply voltage range do the substitute parts support?

A: MC10E137FNG and MC10E016FNG both support 4.2 V to 5.7 V, providing 0.2 V additional headroom compared to the original SY10E137JZ specification of 4.2 V to 5.5 V.

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