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74LVTH273WM Equivalent & Substitute Parts
Part Overview
The 74LVTH273WM is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit parallel data storage capability. This device operates as a master reset flip-flop with positive edge triggering and non-inverted outputs, housed in a 20-SOIC surface mount package.
The 74LVTH273WM is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this logic function.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74LVTH273WM |
| Manufacturer | onsemi |
| Category | Logic |
| Function | Master Reset D-Type Flip-Flop |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Clock Frequency | 150 MHz |
| Max Propagation Delay @ 3.3V, 50pF | 4.9 ns |
| Trigger Type | Positive Edge |
| Output Type | Non-Inverted |
| Voltage Supply Range | 2.7V ~ 3.6V |
| Current Output High/Low | 32mA / 64mA |
| Quiescent Current (Iq) | 190 µA |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts for the 74LVTH273WM are identified based on strict electrical and mechanical parameter matching within the 74LVTH logic series. The substitution criteria are:
Critical Parameters for Substitution:
- Function: Master Reset D-Type Flip-Flop
- Number of Elements: 1
- Number of Bits per Element: 8
- Trigger Type: Positive Edge
- Output Type: Non-Inverted
- Clock Frequency: 150 MHz
- Voltage Supply Range: 2.7V ~ 3.6V
- Package / Case: 20-SOIC (0.295", 7.50mm Width)
- Mounting Type: Surface Mount
The substitute parts SN74LVTH273DW and SN74LVTH273DWR, both manufactured by Texas Instruments, meet all critical electrical and mechanical parameters. Both devices are active products with identical functional specifications, timing characteristics, and package configurations. The primary difference between these substitutes is packaging format: SN74LVTH273DW is supplied in Tube packaging, while SN74LVTH273DWR is supplied in Tape & Reel format.
Parameter Comparison
| Parameter | 74LVTH273WM (onsemi) | SN74LVTH273DW (TI) | SN74LVTH273DWR (TI) |
|---|---|---|---|
| Function | Master Reset | Master Reset | Master Reset |
| Type | D-Type | D-Type | D-Type |
| Number of Elements | 1 | 1 | 1 |
| Number of Bits per Element | 8 | 8 | 8 |
| Clock Frequency | 150 MHz | 150 MHz | 150 MHz |
| Max Propagation Delay @ 3.3V, 50pF | 4.9 ns | 4.9 ns | 4.9 ns |
| Trigger Type | Positive Edge | Positive Edge | Positive Edge |
| Output Type | Non-Inverted | Non-Inverted | Non-Inverted |
| Current Output High/Low | 32mA / 64mA | 32mA / 64mA | 32mA / 64mA |
| Voltage Supply Range | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| Quiescent Current (Iq) | 190 µA | 190 µA | 190 µA |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active |
Engineering Selection Recommendations
Both SN74LVTH273DW and SN74LVTH273DWR are direct functional equivalents to the 74LVTH273WM. The Texas Instruments substitutes are active products with full manufacturing support, whereas the original onsemi part is obsolete.
SN74LVTH273DW is suitable for applications requiring tube packaging for manual assembly or small-volume production runs. SN74LVTH273DWR is appropriate for high-volume automated assembly operations utilizing tape and reel feeding systems.
Both substitute parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Selection between the two Texas Instruments variants should be based on production volume, assembly methodology, and supply chain logistics rather than electrical performance, as both devices are electrically identical.
Frequently Asked Questions (FAQ)
Q: Can SN74LVTH273DW and SN74LVTH273DWR be used interchangeably with 74LVTH273WM?
A: Yes. Both Texas Instruments parts are direct functional equivalents. All critical electrical parameters, timing specifications, and package dimensions are identical. The only difference is packaging format: tube versus tape and reel.
Q: What is the difference between SN74LVTH273DW and SN74LVTH273DWR?
A: Both parts are electrically identical. SN74LVTH273DW is supplied in Tube packaging, while SN74LVTH273DWR is supplied in Tape & Reel format. Selection depends on assembly process requirements and production volume.
Q: Are the substitute parts pin-compatible with 74LVTH273WM?
A: Yes. All three parts use the 20-SOIC package with identical pinout and mechanical dimensions (0.295", 7.50mm width).
Q: What is the significance of the obsolete status of 74LVTH273WM?
A: Obsolete status indicates the original manufacturer (onsemi) has discontinued production. Using active substitute parts from Texas Instruments ensures continued availability and manufacturing support for new designs and production runs.
Q: Do the substitute parts meet current compliance standards?
A: Yes. Both SN74LVTH273DW and SN74LVTH273DWR are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
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