SN74ALS640B-1NAlternatives & Equivalent Parts
About SN74ALS640B-1N
SN74ALS640B-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.
Specification Comparison
| Parameter | SN74ALS640B-1NSource | SN74ALS640B-1DWR |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Package Type | Dual-In-Line Packages | Small Outline Packages |
| Pin Count | 20 | 20 |
| Temperature Range | ~ 70.0°C | ~ 70.0°C |
| Price | $2.3625 | $2.2900 |
| Electrical Parameters | ||
| Pbfree Code | Yes | Yes |
| YTEOL | 15 | 15 |
| Additional Feature | WITH DIRECTION CONTROL | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL | BIDIRECTIONAL |
| Family | ALS | ALS |
| JESD-30 Code | R-PDIP-T20 | R-PDSO-G20 |
| JESD-609 Code | e4 | e4 |
| Load Capacitance (CL) | 50 pF | 50 pF |
| Logic IC Type | BUS TRANSCEIVER | BUS TRANSCEIVER |
| Max I(ol) | 0.048 A | 0.048 A |
| Number of Bits | 8 | 8 |
| Number of Functions | 8 | 8 |
| Number of Ports | 2 | 2 |
| Output Characteristics | 3-STATE | 3-STATE |
| Output Polarity | INVERTED | INVERTED |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 | SOP20,.4 |
| Package Shape | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | SMALL OUTLINE |
| Packing Method | TUBE | TR |
| Power Supply Current-Max (ICC) | 55 mA | 55 mA |
| Prop. Delay@Nom-Sup | 11 ns | 11 ns |
| Propagation Delay (tpd) | 10 ns | 10 ns |
| Qualification Status | Not Qualified | Not Qualified |
| Schmitt Trigger | NO | NO |
| Supply Voltage-Max (Vsup) | 5.25 V | 5.25 V |
| Supply Voltage-Min (Vsup) | 4.75 V | 4.75 V |
| Supply Voltage-Nom (Vsup) | 5 V | 5 V |
| Surface Mount | NO | YES |
| Technology | TTL | TTL |
| Temperature Grade | COMMERCIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE | GULL WING |
| Terminal Pitch | 2.54 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL |
| Peak Reflow Temperature (Cel) | — | 260 |
| Time@Peak Reflow Temperature-Max (s) | — | 30 |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Bus Transceiver, ALS Series, 8-Func, 8-Bit, Inverted Output, TTL, PDSO20
Why Look for Alternatives?
Finding alternatives for SN74ALS640B-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 SN74ALS640B-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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What is equivalent to SN74ALS640B-1N?
Known equivalents for SN74ALS640B-1N include SN74ALS640B-1DWR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74ALS640B-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 SN74ALS640B-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.