SN74AHCT244DWIn StockTexas Instruments
The SN74AHCT244DW is an octal buffer and line driver with 3-state outputs, featuring AHCT logic family, 5V operation, 50pF load capacitance, and 8mA output drive. Ideal for bus interfacing and signal buffering applications. From $0.1554 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AHCT244DW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1554(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal 3-state buffer/line driver with active-low output enable for flexible bus control
- AHCT logic family: CMOS-level inputs compatible with TTL outputs, bridging legacy and modern logic
- High-speed operation with low propagation delay suited for time-critical digital systems
- 20-pin SOIC package with 8mA output drive, optimized for PCB space and signal integrity
- Wide supply voltage range centered at 5V with full industrial temperature compliance
Applications
The SN74AHCT244DW is widely used in microprocessor bus buffering, memory address/data line driving, and signal isolation between logic subsystems. Its 3-state outputs make it ideal for shared bus architectures in embedded systems, industrial controllers, and communication equipment. The AHCT logic family also makes it suitable for interfacing between CMOS and TTL logic levels in mixed-voltage board designs.
Specifications
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | AHCT/VHCT/VT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.008A |
| Number of Bits | 4 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 9.5ns |
| Propagation Delay (tpd) | 9.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| 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 | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74AHCT244DW:
Bus Driver, AHCT/VHCT/VT Series, 8-Func, 8-Bit, True Output, CMOS, PDSO20
Frequently Asked Questions
What is the output drive current of the SN74AHCT244DW?
The SN74AHCT244DW provides a maximum output low current (I_OL) of 8mA, making it suitable for driving standard TTL and CMOS loads on shared data/address buses without additional buffering.
What logic family does the SN74AHCT244DW belong to, and what are its input voltage requirements?
It belongs to the AHCT/VHCT/VT logic family. AHCT devices accept CMOS-level inputs (VIH ≥ 3.15V, VIL ≤ 1.35V at 5V supply), making them ideal for interfacing CMOS logic outputs with TTL-compatible systems.
What package does the SN74AHCT244DW come in and how many channels does it have?
The SN74AHCT244DW is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package. It contains 8 unidirectional buffer channels organized in two groups of four, each controlled by an active-low enable pin.
What are typical applications for the SN74AHCT244DW?
Common applications include microprocessor bus buffering, memory address and data line driving, signal level translation between CMOS and TTL logic, and isolation of bus segments in embedded systems, industrial controllers, and telecommunications equipment.
Is the SN74AHCT244DW RoHS compliant?
Yes, the SN74AHCT244DW carries JESD-609 Code e4, indicating it is lead-free and RoHS compliant, meeting environmental regulations for use in modern electronic manufacturing worldwide.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3330 | $0.33 |
| 73+ | $0.2220 | $16.21 |
| 271+ | $0.1554 | $42.11 |
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