SN74LS641N Texas Instruments In Stock
SN74LS641N is a TTL octal bus transceiver with open-collector outputs by Texas Instruments. Key specs: 8-bit bidirectional data bus, 3-state outputs, 74LS-series TTL logic family. From $1.32, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $1.3183(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LS641N?
- Octal (8-bit) bidirectional bus transceiver for high-density data bus designs
- Open-collector outputs enable wired-OR bus configurations
- Compatible with 74LS TTL logic family for easy system integration
- Direction control via DIR pin for flexible transmit/receive operation
- Output enable (OE) pin allows bus isolation to prevent conflicts
What is SN74LS641N used for?
SN74LS641N is widely used in microprocessor and microcontroller data bus interfaces, where bidirectional data transfer between CPU and peripheral devices is required. It is suitable for memory bus buffering, I/O expansion, and backplane data routing in industrial and embedded systems. Its open-collector outputs make it ideal for multi-master bus architectures and wired-OR logic applications.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SN74LS641N?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74LS641N and what does it do?
The SN74LS641N is an octal bus transceiver with open-collector outputs from Texas Instruments. It provides bidirectional data transfer across an 8-bit bus, controlled by a DIR pin for direction and an OE pin for output enable, making it ideal for interfacing microprocessors with memory and peripheral devices.
What logic family does the SN74LS641N belong to?
The SN74LS641N belongs to the 74LS (Low-power Schottky) TTL logic family. It operates with a supply voltage of 4.75V to 5.25V, offers propagation delays typical of LS-series devices (around 15-20ns), and is fully compatible with other 74LS and standard TTL components.
What are the key differences between SN74LS641N and SN74LS640N?
The SN74LS641N features non-inverting data transmission, while the SN74LS640N provides inverting (complementary) data outputs. Both are octal bus transceivers with open-collector outputs and identical pinouts, so selection depends on whether signal inversion is needed in your bus interface design.
What package does the SN74LS641N use and where can I buy it?
The SN74LS641N comes in a 20-pin DIP (Dual In-line Package) through-hole package, making it easy to use on breadboards and through-hole PCBs. It is available from FindMyChip starting at approximately $1.32 per unit, with worldwide shipping and volume pricing available.
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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.
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| 1+ | $2.1092 | $2.11 |
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| 15+ | $1.4625 | $21.94 |
| 17+ | $1.3183 | $22.41 |
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