SN74HC21DRAlternatives & Equivalent Parts
About SN74HC21DR
SN74HC21DR is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Small Outline Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | SN74HC21DRSource | SN74HC21D | SN74HC21NSR |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 14 | 14 | 14 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $0.0882 | $0.3731 | — |
| Electrical Parameters | |||
| Pbfree Code | Yes | — | Yes |
| YTEOL | 15 | 0 | 15 |
| Family | HC/UH | HC/UH | HC/UH |
| JESD-30 Code | R-PDSO-G14 | R-PDSO-G14 | R-PDSO-G14 |
| JESD-609 Code | e4 | e4 | e4 |
| Load Capacitance (CL) | 50 pF | 50 pF | 50 pF |
| Logic IC Type | AND GATE | AND GATE | AND GATE |
| Max I(ol) | 0.0052 A | 0.0052 A | 0.0052 A |
| Number of Functions | 2 | 2 | 2 |
| Number of Inputs | 4 | 4 | 4 |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 | SOP14,.25 | SOP14,.3 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE |
| Packing Method | TR | TUBE | TR |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 |
| Power Supply Current-Max (ICC) | 0.02 mA | 0.02 mA | 0.02 mA |
| Prop. Delay@Nom-Sup | 28 ns | 28 ns | 28 ns |
| Propagation Delay (tpd) | 140 ns | 140 ns | 140 ns |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified |
| Schmitt Trigger | NO | NO | NO |
| Supply Voltage-Max (Vsup) | 6 V | 6 V | 6 V |
| Supply Voltage-Min (Vsup) | 2 V | 2 V | 2 V |
| Supply Voltage-Nom (Vsup) | 5 V | 5 V | 5 V |
| Surface Mount | YES | YES | YES |
| Technology | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 |
| ## SN74HC21D Alternates Showing results | — | Image | — |
| ## SN74HC21NSR Alternates Showing results | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Why Look for Alternatives?
Finding alternatives for SN74HC21DR is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating SN74HC21DR replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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Request Alternatives for SN74HC21DRFAQ
What is equivalent to SN74HC21DR?
Known equivalents for SN74HC21DR include SN74HC21D, SN74HC21NSR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74HC21DR?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify SN74HC21DR alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.