FIN1104MTC Equivalent & Substitute Parts

Part Overview

The FIN1104MTC is an active LVDS buffer and redriver IC manufactured by onsemi, designed for 4-channel signal conditioning and retiming applications. This 24-TSSOP surface mount device operates at data rates up to 800Mbps with a propagation delay of 1.75ns, making it suitable for high-speed LVDS signal distribution in digital systems. The device is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching functional specifications: 4-channel LVDS redriver architecture, 800Mbps maximum data rate, compatible supply voltage ranges, and active product status with equivalent compliance certifications.

Key Parameters

Parameter	FIN1104MTC
Manufacturer	onsemi
Type	Buffer, ReDriver
Number of Channels	4
Data Rate (Max)	800Mbps
Input Type	LVDS, LVPECL
Output Type	LVDS
Propagation Delay	1.75ns
Supply Voltage	3.0V – 3.6V
Supply Current	41mA
Operating Temperature	-40°C to +85°C
Package	24-TSSOP
Product Status	Active
RoHS Compliance	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the FIN1104MTC are qualified based on the following electrical and mechanical criteria:

Channel Configuration: 4-channel LVDS redriver architecture
Data Rate Compatibility: Maximum 800Mbps operation
Input/Output Specifications: LVDS input and output capability
Supply Voltage Range: Overlapping or compatible 3V supply operation
Operating Temperature Range: -40°C to +85°C industrial grade
Product Status: Active manufacturing status
Compliance: RoHS3 compliance and REACH unaffected status

The identified substitutes (DS90LV804TSQ/NOPB and DS90LV804TSQX/NOPB) from Texas Instruments meet all functional requirements. Both devices operate at identical 800Mbps data rates with 4-channel LVDS redriver functionality. The primary differences are packaging format (32-WQFN versus 24-TSSOP) and propagation delay specifications (2.0ns versus 1.75ns), which must be evaluated for specific application timing requirements.

Parameter Comparison

Parameter	FIN1104MTC	DS90LV804TSQ/NOPB	DS90LV804TSQX/NOPB
Manufacturer	onsemi	Texas Instruments	Texas Instruments
Type	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver
Number of Channels	4	4	4
Data Rate (Max)	800Mbps	800Mbps	800Mbps
Input Type	LVDS, LVPECL	CML, LVDS, LVPECL	CML, LVDS, LVPECL
Output Type	LVDS	LVDS	LVDS
Propagation Delay	1.75ns	2.0ns	2.0ns
Supply Voltage	3.0V – 3.6V	3.15V – 3.45V	3.15V – 3.45V
Supply Current	41mA	117mA	117mA
Operating Temperature	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C
Package	24-TSSOP	32-WQFN (5x5)	32-WQFN (5x5)
Product Status	Active	Active	Active
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

All three devices maintain active product status with full RoHS3 compliance and REACH unaffected certification, ensuring long-term availability and regulatory compliance for industrial applications.

FIN1104MTC (onsemi): Primary selection for applications requiring the lowest propagation delay (1.75ns) and lowest supply current (41mA). The 24-TSSOP package offers compact board layout. MSL 1 rating provides maximum moisture tolerance for storage and handling.

DS90LV804TSQ/NOPB and DS90LV804TSQX/NOPB (Texas Instruments): Suitable substitutes when onsemi supply is unavailable. Both devices provide identical 800Mbps 4-channel LVDS redriver functionality with extended input compatibility (CML support). The 32-WQFN package requires different PCB layout. Higher supply current (117mA) and increased propagation delay (2.0ns) must be accommodated in system design. MSL 3 rating requires controlled storage conditions (168-hour maximum exposure at 85°C/85% RH).

Frequently Asked Questions (FAQ)

Q: Can DS90LV804TSQ/NOPB and DS90LV804TSQX/NOPB be used interchangeably with FIN1104MTC?

A: Both Texas Instruments devices are functionally equivalent for 4-channel LVDS redriver applications at 800Mbps. However, package differences (32-WQFN versus 24-TSSOP) require PCB redesign. The 0.25ns increase in propagation delay and higher supply current must be verified against system timing and power budgets.

Q: What are the key differences between DS90LV804TSQ/NOPB and DS90LV804TSQX/NOPB?

A: Both devices are electrically identical with matching electrical specifications. The primary distinction is packaging format designation and inventory availability. Selection between these two should be based on supply chain availability and packaging requirements.

Q: Are there package compatibility considerations?

A: Yes. FIN1104MTC uses 24-TSSOP (0.173" width, 4.40mm), while both Texas Instruments substitutes use 32-WQFN (5x5mm). These packages have different footprints, pin counts, and thermal characteristics. PCB layout redesign is required for substitution.

Q: What is the impact of the 0.25ns delay difference?

A: The FIN1104MTC provides 1.75ns propagation delay versus 2.0ns for the Texas Instruments devices. For timing-critical applications, this 0.25ns difference must be evaluated against system clock margins and signal integrity requirements.

Q: Are moisture sensitivity levels compatible?

A: FIN1104MTC has MSL 1 (unlimited storage), while both DS90LV804 variants have MSL 3 (168-hour maximum exposure at 85°C/85% RH). Applications requiring extended storage or high-humidity environments should prioritize the onsemi device.

Q: What supply voltage considerations apply?

A: FIN1104MTC operates at 3.0V–3.6V, while DS90LV804 devices operate at 3.15V–3.45V. The narrower Texas Instruments range requires tighter voltage regulation. Verify that system power supplies meet the more restrictive specification.

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