Allicdata Part #: | MC74HCT244ADGOSTR-ND |
Manufacturer Part#: |
MC74HCT244ADG |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC BUF NON-INVERT 5.5V 20TSSOP |
More Detail: | Buffer, Non-Inverting 2 Element 4 Bit per Element ... |
DataSheet: | MC74HCT244ADG Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | 74HCT |
Packaging: | Tape & Reel (TR) |
Part Status: | Obsolete |
Logic Type: | Buffer, Non-Inverting |
Number of Elements: | 2 |
Number of Bits per Element: | 4 |
Input Type: | -- |
Output Type: | 3-State |
Current - Output High, Low: | 6mA, 6mA |
Voltage - Supply: | 4.5 V ~ 5.5 V |
Operating Temperature: | -55°C ~ 125°C (TA) |
Mounting Type: | Surface Mount |
Package / Case: | 20-TSSOP (0.173", 4.40mm Width) |
Supplier Device Package: | 20-TSSOP |
Base Part Number: | 74HCT244 |
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The MC74HCT244ADG is a high-speed silicon gate CMOS logic device which is manufactured using advanced CMOS technology. It is designed for use in a variety of logic applications in both digital and analog systems including logic level shifting and data buffering. The MC74HCT244ADG is available in two different packages, either a dual-in-line package (DIP) or small outline package (SOP).
Application Field
The MC74HCT244ADG belongs to the Logic - Buffers, Drivers, Receivers, Transceivers, product group. It is an octal buffer/line driver which includes 8 buffers/drivers. It is used to isolate and buffer data and address buses, as well as to level shift between buses of different voltages. The octal buffers/drivers are configured as two non-inverting buffers, and six inverting buffers, providing data buffering, logic level shifting and address/data isolation between multiple electrical systems at different logic levels. The devices are also useful in high-speed/high-skew applications for address/data switching and data buffering.
The MC74HCT244ADG features an open drain active LOW enable input (E). When E is HIGH, all eight outputs are in the low state independently of the input data. The output enable (OE) input is also active LOW. When OE is HIGH, all outputs are in the high-impedance state, independent of the input data.
Working Principle
The MC74HCT244ADG features an active LOW enable input (E) which turns off all buffers/drivers when HIGH. This input allows more efficient mono-directional data flow during write cycles and prevents contention during arbitration cycles. The outputs of the octal buffers/drivers (Y[7:0]) are active LOW open drain pull-down outputs which are capable of sinking up to 16 mA of current. The output enable (OE) input is active LOW and when kept LOW, it enables all eight outputs. The octal buffers/drivers feature TTL logic levels and operate from a single power rail in the +4.5V to +5.5V range. Outputs are in the LOW state independently of input data when the E input is HIGH.
The MC74HCT244ADG also features various protection circuits which protect the device from fault conditions. These include a power-on reset circuit which prevents data exposure while the device is powered up and a temperature sensing circuit which shuts down the device when it exceeds its maximum operating temperature. As a further safety measure, Schmitt triggers are used on the inputs to ensure fast and reliable signal reception.
In summary, the MC74HCT244ADG is a high-speed logic device which is designed for use in a variety of logic applications in both digital and analog systems. It features an active LOW enable input (E) which turns off all buffers/drivers when HIGH, and is available in two packages, either a dual-in-line package (DIP) or small outline package (SOP). It features various protection circuits, Schmitt triggers on the inputs and operates from a single power rail in the +4.5V to +5.5V range.
The specific data is subject to PDF, and the above content is for reference
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