AX7DAF1-320.0000C Equivalent & Substitute Parts

Part Overview

The AX7DAF1-320.0000C is a 320 MHz XO (Standard) LVDS oscillator manufactured by Abracon LLC, part of the ClearClock™ AX7 series. This surface mount oscillator operates at 3.3V with enable/disable functionality and is housed in an 8-SMD, No Lead package. The product is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	AX7DAF1-320.0000C
Manufacturer	Abracon LLC
Series	ClearClock™ AX7
Frequency	320 MHz
Output Type	LVDS
Supply Voltage	3.3V
Frequency Stability	±25ppm
Operating Temperature Range	-40°C ~ 85°C
Package / Case	8-SMD, No Lead
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max)	0.075" (1.90mm)
Current - Supply (Max)	70mA
Current - Supply (Disable) (Max)	65mA
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8542.39.0001

Substitute Part Grouping Explanation

Substitution of the AX7DAF1-320.0000C is determined by the following critical parameters:

Frequency: 320 MHz (exact match required)
Output Type: LVDS (exact match required)
Function: Enable/Disable capability (exact match required)
Operating Temperature Range: -40°C ~ 85°C (exact match required)
Frequency Stability: ±25ppm (exact match required)
Base Resonator: Crystal (exact match required)
Type: XO (Standard) (exact match required)

The substitute part 591FB320M000DG from Skyworks Solutions Inc. meets all critical functional and electrical parameters. Differences in supply voltage (2.5V vs. 3.3V), package configuration (6-SMD vs. 8-SMD), and current specifications represent design trade-offs that must be evaluated within the context of the target application circuit.

Parameter Comparison

Parameter	AX7DAF1-320.0000C (Abracon)	591FB320M000DG (Skyworks)
Frequency	320 MHz	320 MHz
Output Type	LVDS	LVDS
Function	Enable/Disable	Enable/Disable
Base Resonator	Crystal	Crystal
Type	XO (Standard)	XO (Standard)
Frequency Stability	±25ppm	±25ppm
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C
Supply Voltage	3.3V	2.5V
Current - Supply (Max)	70mA	100mA
Current - Supply (Disable) (Max)	65mA	75mA
Package / Case	8-SMD, No Lead	6-SMD, No Lead
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)	0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max)	0.075" (1.90mm)	0.071" (1.80mm)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	Not specified in data
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8542.39.0001	8542.39.0001
Product Status	Discontinued at DiGi Electronics	Active

Engineering Selection Recommendations

The 591FB320M000DG from Skyworks Solutions Inc. is an active product with equivalent core functionality to the discontinued AX7DAF1-320.0000C. Both parts maintain identical frequency, output type, stability, and operating temperature specifications. The substitute part carries EAR99 export classification and operates within the same HTSUS tariff code.

Key considerations for selection:

Supply Voltage Difference: The substitute operates at 2.5V versus the original 3.3V. Circuit design must accommodate this voltage requirement.
Package Configuration: The substitute uses a 6-SMD package versus the original 8-SMD configuration. PCB layout and footprint modifications are required.
Current Specifications: The substitute draws higher maximum supply current (100mA vs. 70mA) and higher disable current (75mA vs. 65mA).
Product Status: The substitute is an active product with ongoing manufacturer support, whereas the original is discontinued.

Frequently Asked Questions (FAQ)

Q: Can the 591FB320M000DG be used as a direct pin-for-pin replacement?

A: No. The substitute uses a 6-SMD package versus the original 8-SMD configuration. PCB footprint redesign is required. Pin assignments and signal routing must be verified against both datasheets before implementation.

Q: What is the impact of the 2.5V supply voltage difference?

A: The substitute requires 2.5V supply versus the original 3.3V. This requires circuit modification to provide the correct supply voltage to the oscillator. Verify that the target application can accommodate this voltage level.

Q: Are the frequency and stability specifications identical?

A: Yes. Both parts operate at 320 MHz with ±25ppm frequency stability and identical operating temperature range (-40°C ~ 85°C).

Q: What are the current consumption differences?

A: The substitute draws 100mA maximum supply current (versus 70mA) and 75mA in disable mode (versus 65mA). Power budget calculations must account for these higher values.

Q: Is the substitute part RoHS compliant?

A: RoHS compliance status for the substitute is not specified in the provided data. Verify compliance requirements with the manufacturer or distributor before procurement.

Q: Are both parts classified under the same export regulations?

A: Yes. Both parts carry EAR99 export classification and operate under HTSUS code 8542.39.0001.

Q: What is the moisture sensitivity level for both parts?

A: Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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