SN74HC645NAlternatives & Equivalent Parts
About SN74HC645N
SN74HC645N is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Dual-In-Line Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | SN74HC645NSource | 74HC374D | M74HC573B1R |
|---|---|---|---|
| Manufacturer | Texas Instruments | Nexperia | STMicroelectronics |
| Package Type | Dual-In-Line Packages | Other | Dual-In-Line Packages |
| Pin Count | 20 | 20 | 20 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -55.0°C ~ 125.0°C |
| Price | $0.6583 | $0.1477 | $0.3965 |
| Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | OBSOLETE |
| Electrical Parameters | |||
| Pbfree Code | Yes | — | Yes |
| YTEOL | 15 | 5.35 | 0 |
| Additional Feature | WITH DIRECTION CONTROL | — | BROADSIDE VERSION OF 373 |
| Control Type | COMMON CONTROL | ENABLE LOW | ENABLE LOW |
| Count Direction | BIDIRECTIONAL | UNIDIRECTIONAL | UNIDIRECTIONAL |
| Family | HC/UH | HC/UH | HC/UH |
| JESD-30 Code | R-PDIP-T20 | R-PDSO-G20 | R-PDIP-T20 |
| JESD-609 Code | e4 | e4 | e3 |
| Load Capacitance (CL) | 150 pF | 50 pF | 150 pF |
| Logic IC Type | BUS TRANSCEIVER | BUS DRIVER | BUS DRIVER |
| Max I(ol) | 0.0078 A | 0.0078 A | 0.006 A |
| Number of Bits | 8 | 8 | 8 |
| Number of Functions | 8 | 1 | 1 |
| Number of Ports | 2 | 2 | 2 |
| Output Characteristics | 3-STATE | 3-STATE | 3-STATE |
| Output Polarity | TRUE | TRUE | TRUE |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 | — | DIP20,.3 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | SMALL OUTLINE | IN-LINE |
| Packing Method | TUBE | — | TUBE |
| Power Supply Current-Max (ICC) | 0.08 mA | 70 mA | — |
| Prop. Delay@Nom-Sup | 22 ns | — | 33 ns |
| Propagation Delay (tpd) | 170 ns | 50 ns | 235 ns |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified |
| Schmitt Trigger | 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 | 4.5 V |
| Surface Mount | NO | YES | NO |
| Technology | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | AUTOMOTIVE | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | NICKEL PALLADIUM GOLD | MATTE TIN |
| Terminal Form | THROUGH-HOLE | GULL WING | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | 1.27 mm | 2.54 mm |
| Terminal Position | DUAL | DUAL | DUAL |
| Date Of Intro | — | 1991-01-01 | — |
| Peak Reflow Temperature (Cel) | — | 260 | — |
| Time@Peak Reflow Temperature-Max (s) | — | 30 | — |
| Trigger Type | — | POSITIVE EDGE | — |
| ## M74HC573B1R Alternates Showing results | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 2 alternatives for SN74HC645N — response within 24 hours.
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Why Look for Alternatives?
Finding alternatives for SN74HC645N 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 SN74HC645N 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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FAQ
What is equivalent to SN74HC645N?
Known equivalents for SN74HC645N include 74HC374D, M74HC573B1R. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74HC645N?
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 SN74HC645N 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.