SN74ALS299NS Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments SN74ALS299NS is an 8-bit universal shift/storage register with 3-state outputs, operating from 4.5 V to 5.5 V supply. Available in 20-pin DIP package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74ALS299NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ALS299NS?
- 8-bit universal shift/storage register supporting parallel load, serial shift left/right, and hold modes
- 3-state outputs allow direct connection to shared buses, reducing external buffer requirements
- Advanced Low-power Schottky (ALS) technology delivers propagation delays as low as 8 ns at 5 V
What is SN74ALS299NS used for?
The SN74ALS299NS is used in microprocessor bus interfaces, serial-to-parallel data conversion, and pipeline registers in digital systems. Its 8-bit width and 3-state bus capability make it ideal for buffering data between 5 V TTL logic buses in industrial controllers and test equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74ALS299NS datasheet?
SN74ALS299NS Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS299NS?
Compatible alternatives and drop-in replacements for SN74ALS299NS:
Parallel In Parallel Out, ALS Series, 8-Bit, Bidirectional, True Output, TTL, PDSO20
Parallel In Parallel Out, ALS Series, 8-Bit, Bidirectional, True Output, TTL, PDSO20
Frequently Asked Questions
What supply voltage range does the SN74ALS299NS require and what propagation delay can designers expect?
The SN74ALS299NS operates from a 4.5 V to 5.5 V supply and achieves typical propagation delays around 8 ns to 10 ns in Advanced Low-power Schottky technology. This makes it suitable for medium-speed TTL bus designs clocked up to approximately 50 MHz.
How many bits does the SN74ALS299NS handle and what shift modes are available?
The SN74ALS299NS is an 8-bit register supporting 4 operating modes: parallel load, shift left, shift right, and hold. This flexibility allows a single device to serve as both a shift register and a storage register in serial communication and data buffering applications.
For a shared data bus design, how do the 3-state outputs of the SN74ALS299NS help reduce component count?
The 3-state outputs allow up to several SN74ALS299NS devices to share a common 8-bit bus without additional bus transceivers. When disabled, each output floats to a high-impedance state, preventing bus contention and saving the 1–2 ICs that would otherwise be needed for bus isolation.
What through-hole package does the SN74ALS299NS use and how many pins does it provide?
The SN74ALS299NS comes in a 20-pin dual-in-line (DIP) plastic package with 2.54 mm pin pitch. Its through-hole format suits hand-soldered prototypes and older industrial PCBs where surface-mount assembly tooling is unavailable.
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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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