| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| SN74LS645-1DWR | Texas Instruments | $1.0224 | Bus Transceiver, LS Series, 8-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs SN74LS645-1DWR |
| DM74LS645WM | Rochester Electronics LLC | Check for Price | LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, 0.300 INCH, MS-013, SOIC-20 | SN74LS645DW vs DM74LS645WM |
| DM74LS645WMX | Fairchild Semiconductor Corporation | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs DM74LS645WMX |
| SN74LS645DWG4 | Texas Instruments | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs SN74LS645DWG4 |
| SN74LS645-1DWRG4 | Texas Instruments | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs SN74LS645-1DWRG4 |
| N74LS645-1D | YAGEO Corporation | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs N74LS645-1D |
| N74LS645D | Signetics | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs N74LS645D |
| SN74LS645DWR2 | Motorola Semiconductor Products | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs SN74LS645DWR2 |
| SN74LS645DW | Rochester Electronics LLC | Check for Price | LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, SO-20 | SN74LS645DW vs SN74LS645DW |
| N74LS645D | YAGEO Corporation | Check for Price | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | SN74LS645DW vs N74LS645D |
Part Details for SN74LS645DW by Texas Instruments
Results Overview of SN74LS645DW by Texas Instruments
- Distributor Offerings: (6 listings)
- Number of FFF Equivalents: (10 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Available)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
Applications
Financial Technology (Fintech)
Computing and Data Storage
Automotive
SN74LS645DW Information
SN74LS645DW by Texas Instruments is a Bus Driver/Transceiver.
Bus Driver/Transceivers are under the broader part category of Logic Components.
Digital logic governs the behavior of signals in electronic circuits, enabling complex decisions based on simple binary inputs (yes/no). Logic components perform operations from these signals. Read more about Logic Components on our Logic part category page.
Available Datasheets
| Part # | Manufacturer | Description | Datasheet |
|---|---|---|---|
| SN74LS645DW | Texas Instruments | Octal bus transceivers 20-SOIC 0 to 70 |
Price & Stock for SN74LS645DW
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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DISTI #
296-41910-5-ND
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DigiKey | IC TXRX 4.75V/5.25V 20-SOIC Min Qty: 1 Container: Tube |
0 Tube |
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$1.7650 / $2.4600 | Buy Now |
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Bristol Electronics | Bus XCVR Single 8-CH 3-ST 20-Pin SOIC Tube | 55 |
|
RFQ | |
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Quest Components | BUS TRANSCEIVER, LS SERIES, 1-FUNC, 8-BIT, TRUE OUTPUT, TTL, PDSO20 | 86 |
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$2.7600 / $4.1400 | Buy Now |
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Quest Components | BUS TRANSCEIVER, LS SERIES, 1-FUNC, 8-BIT, TRUE OUTPUT, TTL, PDSO20 | 40 |
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$2.5200 / $3.7800 | Buy Now |
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Rochester Electronics | Bus Transceiver, LS Series, 8-Func, 8-Bit, True Output, TTL, PDSO20 RoHS: Compliant Status: Obsolete Min Qty: 1 | 13 |
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$1.1900 / $1.4900 | Buy Now |
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ComSIT USA | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 ECCN: EAR99 RoHS: Compliant |
|
|
RFQ |
US Tariff Estimator: SN74LS645DW by Texas Instruments
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
SN74LS645DW CAD Models
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SN74LS645DW Part Data Attributes
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SN74LS645DW
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
SN74LS645DW
Texas Instruments
Bus Transceiver, LS Series, 8-Func, 8-Bit, True Output, TTL, PDSO20
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | SOIC | |
| Pin Count | 20 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.60 | |
| Additional Feature | With Direction Control | |
| Control Type | Common Control | |
| Count Direction | Bidirectional | |
| Family | Ls | |
| JESD-30 Code | R-PDSO-G20 | |
| JESD-609 Code | e4 | |
| Length | 12.8 Mm | |
| Load Capacitance (CL) | 45 Pf | |
| Logic IC Type | Bus Transceiver | |
| Max I(ol) | 0.024 A | |
| Moisture Sensitivity Level | 1 | |
| Number of Bits | 8 | |
| Number of Functions | 8 | |
| Number of Ports | 2 | |
| Number of Terminals | 20 | |
| Operating Temperature-Max | 70 °C | |
| Operating Temperature-Min | ||
| Output Characteristics | 3-State | |
| Output Polarity | True | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | SOP | |
| Package Equivalence Code | SOP20,.4 | |
| Package Shape | Rectangular | |
| Package Style | Small Outline | |
| Packing Method | Tube | |
| Peak Reflow Temperature (Cel) | 260 | |
| Power Supply Current-Max (ICC) | 90 Ma | |
| Prop. Delay@Nom-Sup | 15 Ns | |
| Propagation Delay (tpd) | 15 Ns | |
| Qualification Status | Not Qualified | |
| Schmitt Trigger | No | |
| Seated Height-Max | 2.65 Mm | |
| Supply Voltage-Max (Vsup) | 5.25 V | |
| Supply Voltage-Min (Vsup) | 4.75 V | |
| Supply Voltage-Nom (Vsup) | 5 V | |
| Surface Mount | Yes | |
| Technology | Ttl | |
| Temperature Grade | Commercial | |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 1.27 Mm | |
| Terminal Position | Dual | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Width | 7.5 Mm |
Alternate Parts for SN74LS645DW
This table gives cross-reference parts and alternative options found for SN74LS645DW. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of SN74LS645DW, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
SN74LS645DW Frequently Asked Questions (FAQ)
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The maximum operating frequency of the SN74LS645DW is 30 MHz, but it can vary depending on the system design and capacitive loading.
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To ensure reliable operation in high-temperature environments, it is recommended to follow proper thermal management practices, such as providing adequate heat sinking and airflow, and ensuring that the device is operated within its specified temperature range (-40°C to 85°C).
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The recommended power-on sequence for the SN74LS645DW is to apply power to the VCC pin before applying any input signals, and to ensure that the input signals are stable before enabling the clock signal.
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To handle bus contention when using the SN74LS645DW as a bus transceiver, it is recommended to use a bus arbiter or a bus controller to manage access to the bus, and to ensure that only one device is driving the bus at a time.
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The maximum capacitive load that the SN74LS645DW can drive is 100 pF, but it can vary depending on the system design and operating frequency.