SN74ALS29821NT Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74ALS29821NT is a 10-bit bus interface flip-flop IC from Texas Instruments ALS logic family with power-off disable outputs for live insertion, unidirectional 300pF load capacity. From $3.32, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS29821NT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.3200(MOQ 1)
- 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 SN74ALS29821NT?
- 10-bit bus interface flip-flop with tri-state outputs for high-density bus driving
- Power-off disable feature enables safe live board insertion without bus contention
- Enable-low active control for flexible bus arbitration and simplified system design
- ALS (Advanced Low-power Schottky) technology delivers fast switching with reduced power consumption
- 24-pin DIP package (PDIP-T24) for easy through-hole prototyping and legacy system integration
What is SN74ALS29821NT used for?
The SN74ALS29821NT is widely used in microprocessor bus interface applications where reliable data buffering and isolation between bus segments is required. Its power-off disable outputs make it ideal for hot-swap and live insertion designs in backplane systems, industrial controllers, and modular computing boards. It also suits address and data bus drivers in embedded systems, memory expansion modules, and test equipment requiring unidirectional 10-bit parallel data transfer.
What are the specifications of SN74ALS29821NT?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | POWER OFF DISABLE OUTPUTS TO PERMIT LIVE INSERTION |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ALS |
| JESD-30 Code | R-PDIP-T24 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 300pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.048A |
| Number of Bits | 10 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP24,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 115mA |
| Prop. Delay@Nom-Sup | 16ns |
| Propagation Delay (tpd) | 16ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74ALS29821NT datasheet?
SN74ALS29821NT Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS29821NT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74ALS29821NT and what does it do?
The SN74ALS29821NT is a 10-bit bus interface flip-flop IC from Texas Instruments in the ALS (Advanced Low-power Schottky) logic family. It features enable-low active control, unidirectional data flow, and supports up to 300 pF load capacitance. It is housed in a 24-pin DIP package and is designed for high-drive bus interface applications.
What is the significance of the power-off disable outputs feature?
The power-off disable outputs feature allows the SN74ALS29821NT outputs to go into a high-impedance state when the device is powered off. This enables live board insertion and removal without causing bus contention or data corruption, making it essential for hot-swap designs in backplane systems and modular embedded applications.
What are typical applications for the SN74ALS29821NT?
Typical applications include microprocessor address and data bus drivers, backplane buffer circuits, memory expansion interfaces, and industrial control systems. The device is well-suited for any design requiring reliable 10-bit unidirectional bus buffering with tri-state control and support for live insertion.
What package does the SN74ALS29821NT come in and is it RoHS compliant?
The SN74ALS29821NT is available in a 24-pin Dual-In-Line (PDIP-T24) through-hole package, suitable for breadboard and PCB prototyping. It is Pb-free (RoHS compliant) as indicated by its JESD-609 code e4 and Pbfree Code: Yes, making it suitable for modern environmentally-conscious designs.
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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 |
|---|---|---|
| 1+ | $14.0850 | $14.09 |
| 3+ | $10.3290 | $30.99 |
| 8+ | $9.3900 | $75.12 |
| 61+ | $4.8900 | $298.29 |
| 500+ | $3.5200 | $1760.00 |
| 1000+ | $3.3200 | $3320.00 |
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