1. Product Overview:

️· Part Number: SN74LS352
️· Type: 4-to-1 Line Multiplexer/Selector. (It routes one of four input lines to a single output line based on two select inputs.)
️· Logic Family: LS TTL (Low-Power Schottky TTL)
️· Packaging Options:
- SO-16 (Plastic Surface Mount)
- PDIP-16 (Plastic Dual In-Line Package)
- CERDIP-16 (Ceramic Dual In-Line Package)

2. Pinout and Function:

️· The datasheet shows pin diagrams for each package option (important for connecting).
️· Function: The output (Y) is connected to one of the four inputs (A, B, C, or D) as determined by the levels of the two select inputs (S1 and S2).
- S1 = LOW, S2 = LOW: Y = A
- S1 = LOW, S2 = HIGH: Y = B
- S1 = HIGH, S2 = LOW: Y = C
- S1 = HIGH, S2 = HIGH: Y = D

3. Electrical Characteristics (Important Numbers):

️· Supply Voltage (VCC): 4.5V to 5.5V (54 variant) or 4.75V to 5.25V (74 variant)
️· Operating Ambient Temperature: -55°C to 125°C (54 variant) or 0°C to 70°C (74 variant)
️· Input HIGH Voltage (VIH): 2.0V (54 variant) or 2.7V (74 variant)
️· Input LOW Voltage (VIL): 0.7V (54 variant) or 0.8V (74 variant)
️· Output HIGH Voltage (VOH): (varies with load, but generally >2.5V for 54, >2.7V for 74)
️· Output LOW Voltage (VOL): (varies with load, but generally <0.45V for 54, <0.35V for 74)
️· Power Supply Current (ICC): Typically around 10mA (max).
️· Propagation Delay (tPLH/tPHL): ~20-30 ns (a measure of how quickly the output changes after a change at the inputs.

4. AC Waveforms:

️· The datasheet provides timing diagrams (waveforms) that illustrate the input/output relationships and propagation delays.

5. Important Notes & Disclaimers:

️· Liability: Motorola (now part of NXP Semiconductors) disclaims responsibility for unintended or unauthorized uses, particularly those related to life-support applications.
️· Variations: "Typical" parameters can vary. It's the customer's responsibility to validate parameters for their specific application.
️· Motorola's rights: Motorola retains intellectual property rights and licenses.

How to Use This Information:

️· Circuit Design: Use the truth table to determine how to connect the SN74LS352 in your circuit.
️· Power Supply: Ensure your supply voltage is within the specified range.
️· Timing: Consider propagation delays if timing is critical in your design.
️· Package Selection: Choose the package option that best suits your board layout.
️· Environmental Conditions: Ensure the operating temperature is within range.