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Product Detailed Parameters
- Description：PROTOTYPE
- Series：74ALS
- Mfr：Texas Instruments
- Package：Bulk
- 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：15mA, 48mA
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：20-SSOP
- Grade：-
- Qualification：-
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Overview
The SN74ALS244CDB is an octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a commercial temperature range of 0°C to 70°C. The device utilizes Advanced Low-Power Schottky (ALS) logic technology with non-inverting polarity. It is housed in a 20-pin SSOP package. Key electrical characteristics include a high-level output current of -15 mA and a low-level output current of 24 mA.
Feature Summary
- Provides eight non-inverting buffers or line drivers with three-state outputs for bus-oriented applications.
- Incorporates PNP inputs designed to reduce DC loading on driving circuits.
- Features symmetrical active-low output-enable inputs for controlled signal transmission.
Applications
- Driving memory address registers
- Clock signal distribution
- Bus-oriented receivers and transmitters
Procurement Notes
Verify the specific ordering suffix 'DB' corresponds to the SSOP package variant when sourcing. Confirm RoHS compliance status and lead finish details via the manufacturer's official packaging addendum. Ensure the procurement channel provides valid traceability documentation for catalog-grade components.
Selection Notes
Select this component for designs requiring ALS performance levels with reduced power consumption compared to standard LS logic. Verify that the required low-level output current does not exceed 24 mA under operating conditions. Consider the SSOP package dimensions against available PCB real estate constraints.
Part Context
This part belongs to the SN74ALS244C family of octal buffers. It shares functional similarities with the SN74LS244 but offers improved speed and lower power dissipation due to its ALS technology. The device is categorized as a general-purpose logic IC suitable for digital system interconnects.
Replacement Considerations
SN74ALS244CDWR serves as a tape-and-reel alternative within the same SOIC/SSOP family. SN74AS244A variants offer faster switching speeds but require verification of pin compatibility and drive strength requirements.
