SN74HCT244N Texas Instruments In Stock
SN74HCT244N is an octal buffer/line driver with 3-state outputs by Texas Instruments, featuring HCT logic family compatibility with TTL input levels and CMOS output levels. Key specs: 8-bit buffer, 3-state outputs, VCC 4.5–5.5V, propagation delay 13ns typical. From $0.58, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.5819(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74HCT244N?
- Octal (8-bit) buffer/line driver with 3-state outputs for bus interface applications
- HCT logic family: TTL-compatible inputs (VIH 2V) with CMOS output levels for mixed-logic systems
- Active-low Output Enable (OE) control allows easy bus isolation and high-impedance state
- Wide operating voltage range: 4.5V to 5.5V with low quiescent current consumption
- Available in DIP-20 package for through-hole prototyping and industrial designs
What is SN74HCT244N used for?
The SN74HCT244N is widely used in microprocessor bus buffering and address/data line driving applications where TTL-to-CMOS level translation is required. It is suitable for memory interfacing, backplane driving, and signal isolation in industrial control systems. The device also finds use in test equipment, embedded systems, and legacy digital circuit designs requiring robust 3-state bus management.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SN74HCT244N?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74HCT244N and what does it do?
The SN74HCT244N is an octal buffer and line driver with 3-state outputs from Texas Instruments. It provides 8 non-inverting buffer channels that can be enabled or disabled via an active-low Output Enable pin, making it ideal for driving data and address buses in digital systems with TTL-compatible inputs.
What are the key electrical specifications of the SN74HCT244N?
The SN74HCT244N operates on a supply voltage of 4.5V to 5.5V. It features TTL-compatible input thresholds (VIH min 2V, VIL max 0.8V), CMOS-level outputs, a typical propagation delay of 13ns, and can source/sink up to 6mA output current. Operating temperature range is 0°C to 70°C for the commercial grade.
What package does the SN74HCT244N come in?
The SN74HCT244N is housed in a 20-pin DIP (Dual In-line Package) through-hole package, making it easy to use on breadboards and through-hole PCBs. Texas Instruments also offers the same function in SOIC and TSSOP surface-mount packages under part numbers like SN74HCT244D and SN74HCT244PW.
What are common applications for the SN74HCT244N?
Common applications include microprocessor address and data bus buffering, memory system interfacing, signal isolation in embedded systems, backplane driving, and TTL-to-CMOS level conversion. It is frequently used in industrial control, test equipment, and legacy digital circuit designs requiring reliable 3-state bus control.
What are suitable replacements or alternatives to the SN74HCT244N?
Compatible alternatives include the 74HC244 (CMOS-input version), 74ACT244 (higher speed), and CD74HCT244E from Texas Instruments. Pin-compatible equivalents from other manufacturers include the NXP 74HCT244N and ON Semiconductor MC74HCT244AN, all sharing the same DIP-20 pinout and logic function.
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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+ | $1.4546 | $1.45 |
| 25+ | $0.5819 | $14.55 |
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