SN74LS645-1NAlternatives & Equivalent Parts
About SN74LS645-1N
SN74LS645-1N 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 | SN74LS645-1NSource | SN74LS645NS | SN74LS640-1N | SN74LS645N | SN74LS645-1DW | SN74LS640N | SN74LS645DW |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Dual-In-Line Packages | — | Dual-In-Line Packages | Dual-In-Line Packages | — | — | — |
| Pin Count | 20 | — | 20 | 20 | — | — | — |
| Temperature Range | ~ 70.0°C | — | ~ 70.0°C | ~ 70.0°C | — | — | — |
| Price | $1.2700 | $0.8804 | $1.2400 | $1.0600 | $1.1700 | $0.4095 | $1.0800 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | — | ACTIVE | ACTIVE | — | — | — |
| Electrical Parameters | |||||||
| Pbfree Code | Yes | — | — | — | — | — | — |
| YTEOL | 15 | — | 15 | 15 | — | — | — |
| Additional Feature | WITH DIRECTION CONTROL | — | WITH DIRECTION CONTROL | WITH DIRECTION CONTROL | — | — | — |
| Control Type | COMMON CONTROL | — | COMMON CONTROL | COMMON CONTROL | — | — | — |
| Count Direction | BIDIRECTIONAL | — | BIDIRECTIONAL | BIDIRECTIONAL | — | — | — |
| Family | LS | — | LS | LS | — | — | — |
| JESD-30 Code | R-PDIP-T20 | — | R-PDIP-T20 | R-PDIP-T20 | — | — | — |
| JESD-609 Code | e4 | — | e4 | e4 | — | — | — |
| Load Capacitance (CL) | 45 pF | — | 45 pF | 45 pF | — | — | — |
| Logic IC Type | BUS TRANSCEIVER | — | BUS TRANSCEIVER | BUS TRANSCEIVER | — | — | — |
| Max I(ol) | 0.024 A | — | 0.024 A | 0.024 A | — | — | — |
| Number of Bits | 8 | — | 8 | 8 | — | — | — |
| Number of Functions | 8 | — | 8 | 8 | — | — | — |
| Number of Ports | 2 | — | 2 | 2 | — | — | — |
| Output Characteristics | 3-STATE | — | 3-STATE | 3-STATE | — | — | — |
| Output Polarity | TRUE | — | INVERTED | TRUE | — | — | — |
| Package Body Material | PLASTIC/EPOXY | — | PLASTIC/EPOXY | PLASTIC/EPOXY | — | — | — |
| Package Equivalence Code | DIP20,.3 | — | DIP20,.3 | DIP20,.3 | — | — | — |
| Package Shape | RECTANGULAR | — | RECTANGULAR | RECTANGULAR | — | — | — |
| Package Style | IN-LINE | — | IN-LINE | IN-LINE | — | — | — |
| Packing Method | TUBE | — | TUBE | TUBE | — | — | — |
| Power Supply Current-Max (ICC) | 95 mA | — | 90 mA | 95 mA | — | — | — |
| Prop. Delay@Nom-Sup | 15 ns | — | 15 ns | 15 ns | — | — | — |
| Propagation Delay (tpd) | 15 ns | — | 15 ns | 15 ns | — | — | — |
| Qualification Status | Not Qualified | — | Not Qualified | Not Qualified | — | — | — |
| Schmitt Trigger | NO | — | NO | NO | — | — | — |
| Supply Voltage-Max (Vsup) | 5.25 V | — | 5.25 V | 5.25 V | — | — | — |
| Supply Voltage-Min (Vsup) | 4.75 V | — | 4.75 V | 4.75 V | — | — | — |
| Supply Voltage-Nom (Vsup) | 5 V | — | 5 V | 5 V | — | — | — |
| Surface Mount | NO | — | NO | NO | — | — | — |
| Technology | TTL | — | TTL | TTL | — | — | — |
| Temperature Grade | COMMERCIAL | — | COMMERCIAL | COMMERCIAL | — | — | — |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | — | — | — |
| Terminal Form | THROUGH-HOLE | — | THROUGH-HOLE | THROUGH-HOLE | — | — | — |
| Terminal Pitch | 2.54 mm | — | 2.54 mm | 2.54 mm | — | — | — |
| Terminal Position | DUAL | — | DUAL | DUAL | — | — | — |
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 6 alternatives for SN74LS645-1N — response within 24 hours.
Quick Links
Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDIP20
Bus Transceiver, LS Series, 8-Func, 8-Bit, Inverted Output, TTL, PDIP20
Bus Transceiver, LS Series, 8-Func, 8-Bit, True Output, TTL, PDSO20
Bus Transceiver, LS Series, 8-Func, 8-Bit, Inverted Output, TTL, PDIP20
Why Look for Alternatives?
Finding alternatives for SN74LS645-1N 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 SN74LS645-1N 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 SN74LS645-1N?
Known equivalents for SN74LS645-1N include SN74LS645NS, SN74LS640-1N, SN74LS645N. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74LS645-1N?
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 SN74LS645-1N 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.