Texas Instruments SN74ALS679NS
Product Information
The SN74ALS679NS from Texas Instruments is a specialised bit magnitude comparator that delivers high-performance computation with active high output. This robust comparator is neatly accommodated within a compact 20-SO package that reinforces the precision of digital systems.
Number of Bits:
16
Output Function:
-
Mounting Type:
Surface Mount
HTSUS:
8542.39.0001
Package:
Bulk
Series:
74ALS
Operating Temperature:
0°C ~ 70°C (TA)
Current - Output High, Low:
2.6mA, 24mA
Supplier Device Package:
20-SO
Voltage - Supply:
4.5V ~ 5.5V
Max Propagation Delay @ V, Max CL:
30ns @ 5V, 50pF
Package / Case:
20-SOIC (0.209", 5.30mm Width)
Output:
Active High
Type:
Address Comparator
ECCN:
EAR99
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The SN74ALS679NS is a 16-pin IC that incorporates eight comparators to perform a bit-wise comparison of two 8-bit binary numbers. It operates on a single +5V power supply and offers low power consumption. The magnitude comparator outputs provide valuable information about the relative magnitudes of the input numbers. Its magnitude comparator bit outputs provide:
Cascading and Application Versatility of Texas Instruments SN74ALS679NS:
Multiple SN74ALS679NS ICs can be cascaded to compare numbers with larger bit widths. Each stage's magnitude comparator bit outputs can be utilised to determine the overall magnitude relationship between the two numbers.
The magnitude comparator within the SN74ALS679NS compares each corresponding bit of the two input numbers, starting from the most significant bit (MSB) down to the least essential bit (LSB). The comparator bit output indicates whether the corresponding bit in the first number is more significant than, equal to, or less than the corresponding bit in the second number.
The magnitude comparator bit output is encoded using three-state logic, providing three possible states: HIGH, LOW, or high-impedance (Hi-Z). A HIGH output indicates that the bit in the first number is more remarkable, a LOW output indicates that the bit in the second number is greater, and a Hi-Z output indicates equality between the bits.
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