SN74LS641-1DW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74LS641-1DW is an 8-bit non-inverting TTL bus transceiver with bidirectional control and 3-state outputs, operating at 4.75–5.25V in a 20-pin SOIC package. From $1.96, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS641-1DW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.9600(MOQ 98)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LS641-1DW?
- 8-bit non-inverting bidirectional bus transceiver with common direction control
- 3-state outputs enable bus sharing and prevent bus contention in TTL systems
- Operating voltage range 4.75V to 5.25V for robust 5V TTL compatibility
- 20-pin SOIC (JESD-30 R-PDSO-G20) package for space-efficient PCB mounting
- Max output low current (I_OL) of 24mA for strong drive capability
What is SN74LS641-1DW used for?
The SN74LS641-1DW is widely used in microprocessor and microcontroller data bus interfaces, enabling bidirectional data transfer between CPU buses and peripheral devices. It is ideal for memory expansion systems, I/O port buffering, and backplane bus arbitration in industrial and embedded control applications. Its non-inverting TTL logic and 3-state output capability make it suitable for multi-master bus architectures in communications and computing hardware.
What are the specifications of SN74LS641-1DW?
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | LS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 45pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| 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) | 90mA |
| Prop. Delay@Nom-Sup | 25ns |
| Propagation Delay (tpd) | 25ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the SN74LS641-1DW datasheet?
SN74LS641-1DW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS641-1DW?
Compatible alternatives and drop-in replacements for SN74LS641-1DW:
Frequently Asked Questions
What is the operating voltage range of the SN74LS641-1DW?
The SN74LS641-1DW operates on a supply voltage (VCC) range of 4.75V to 5.25V, making it fully compatible with standard 5V TTL logic systems and typical 5V microprocessor bus environments.
What package type does the SN74LS641-1DW use and how many pins does it have?
The SN74LS641-1DW comes in a 20-pin SOIC (Small Outline Integrated Circuit) package, designated JESD-30 R-PDSO-G20. This compact surface-mount package is suitable for high-density PCB designs.
What are typical applications for the SN74LS641-1DW bus transceiver?
Typical applications include bidirectional data bus buffering between CPUs and memory or I/O peripherals, backplane bus drivers in embedded systems, and multi-master bus arbitration in industrial controllers and communication equipment.
Can the SN74LS641-1DW be used as a replacement for other 8-bit bus transceivers?
Yes, the SN74LS641-1DW is functionally compatible with other 8-bit non-inverting TTL bus transceivers in the LS logic family. Always verify pinout, drive current (I_OL 24mA), and propagation delay specs before substitution.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 98+ | $3.0600 | $299.88 |
| 500+ | $2.2100 | $1105.00 |
| 1000+ | $2.0800 | $2080.00 |
| 10000+ | $1.9600 | $19600.00 |
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