TLV7042DDFR Equivalent & Substitute Parts

Part Overview

The TLV7042DDFR is a dual-channel general-purpose comparator manufactured by Texas Instruments in TSOT-23-8 surface-mount packaging. This device features open-drain, rail-to-rail output architecture with a supply voltage range of 1.6V to 6.5V, making it suitable for low-power and battery-operated applications. The part is currently in active production status with 6409 units in stock. Equivalent and substitute parts are identified when design requirements necessitate alternative packaging formats, different thermal operating ranges, or specific inventory availability while maintaining functional compatibility within defined electrical parameter tolerances.

Substiute Parts

TLV7042DDFR

Texas InstrumentsIn Stock: 6428TLV7042DDFR Datasheet

Current PartRFQ

APX393M8G-13

Diodes IncorporatedIn Stock: 7228APX393M8G-13 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLV7042DDFR are identified based on functional equivalence within the following critical parameters:

Functional Equivalence Criteria:

• Dual-channel (2 elements) general-purpose comparator architecture
• Open-drain, rail-to-rail output configuration
• Supply voltage range overlap with primary part specifications
• Input offset voltage within acceptable tolerance for signal conditioning applications
• Operating temperature range compatibility with end-use environment
• Surface-mount packaging format
• RoHS3 compliance and REACH unaffected status

Substitution Constraints: Substitute parts must maintain the same number of comparator channels and output type. Supply voltage ranges must overlap sufficiently to support the intended application. Parts with narrower supply ranges (such as 2.5V ~ 5.5V versus 1.6V ~ 6.5V) are suitable for applications operating within the overlapping voltage window. Differences in propagation delay, quiescent current, and input bias current are acceptable when the substitute part meets the performance requirements of the specific application circuit.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (TLV7042DDFR): The TLV7042DDFR is the preferred choice for applications requiring extended supply voltage range (1.6V ~ 6.5V), ultra-low quiescent current (900nA maximum), and minimal input bias current (2pA maximum). This part is suitable for battery-powered and energy-harvesting applications. The TSOT-23-8 package provides compact board footprint. MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling. RoHS3 compliance and REACH unaffected status confirm regulatory alignment for industrial and commercial applications.

Substitute Part Selection (APX393M8G-13): The APX393M8G-13 from Diodes Incorporated serves as a functional substitute when the application operates within the 2.5V ~ 5.5V supply voltage window. This part offers faster propagation delay (600ns typical versus 3µs for TLV7042DDFR) and higher output current capability (60mA typical versus 33mA). The 8-MSOP package provides alternative board layout options. Selection of this substitute is appropriate when higher speed performance is required and the narrower supply voltage range is compatible with the circuit design. RoHS3 compliance is maintained. MSL rating of 3 (168 Hours) requires standard moisture control during storage and assembly.

Compliance Verification: Both parts maintain active production status, RoHS3 compliance, and REACH unaffected designation. Selection between primary and substitute parts depends on specific application requirements regarding supply voltage range, propagation delay, quiescent current, and package format compatibility with PCB design constraints.

Frequently Asked Questions (FAQ)

Q: Can the APX393M8G-13 replace the TLV7042DDFR in all applications?

A: The APX393M8G-13 is functionally equivalent for applications operating within the 2.5V ~ 5.5V supply voltage range. Applications requiring supply voltages below 2.5V or above 5.5V must use the TLV7042DDFR. Both parts provide dual-channel, open-drain, rail-to-rail comparator functionality with compatible input and output characteristics within the overlapping voltage window.

Q: What are the package differences between these parts?

A: The TLV7042DDFR uses SOT-23-8 (TSOT-23-8) packaging, while the APX393M8G-13 uses 8-MSOP (8-TSSOP) packaging. Both are surface-mount formats with 8 pins. Physical dimensions and PCB footprints differ; verify compatibility with existing board layouts before substitution. Pin-to-pin functional mapping must be confirmed during design integration.

Q: How do the quiescent current specifications affect part selection?

A: The TLV7042DDFR has a maximum quiescent current of 900nA, while the APX393M8G-13 specifies 180µA maximum. For battery-powered applications requiring minimal standby power consumption, the TLV7042DDFR is the appropriate choice. The APX393M8G-13 is suitable for applications where quiescent current is not a critical design constraint.

Q: Are there differences in input offset voltage between these parts?

A: The TLV7042DDFR specifies 8mV maximum input offset voltage at 5V, while the APX393M8G-13 specifies 7mV maximum at 5V. Both values are within typical comparator specifications for general-purpose applications. Selection based on input offset voltage alone is not a primary differentiator; application-specific accuracy requirements determine necessity for offset trimming or calibration.

Q: What is the significance of the propagation delay difference?

A: The TLV7042DDFR has a typical propagation delay of 3µs, while the APX393M8G-13 specifies 600ns typical. The APX393M8G-13 provides approximately 5 times faster response. For high-speed signal conditioning, precision timing, or fast threshold detection applications, the APX393M8G-13 is preferred. For general-purpose threshold detection with relaxed timing requirements, both parts are acceptable.

Q: What moisture sensitivity considerations apply to these parts?

A: The TLV7042DDFR has MSL rating 1 (Unlimited), indicating no moisture sensitivity during storage. The APX393M8G-13 has MSL rating 3 (168 Hours), requiring moisture control during storage and assembly. Standard moisture barrier packaging and bake-out procedures per IPC standards apply to the APX393M8G-13 before reflow soldering.

Q: Are both parts RoHS3 compliant?

A: Yes, both the TLV7042DDFR and APX393M8G-13 are RoHS3 compliant and REACH unaffected. Both parts meet regulatory requirements for commercial, industrial, and consumer applications in regions with RoHS directives.

Q: Can I use the APX393M8G-13 in a 1.6V supply application?

A: No. The APX393M8G-13 minimum supply voltage is 2.5V. Applications requiring operation at 1.6V must use the TLV7042DDFR. Verify all supply voltage specifications against application requirements before part selection.