SN74LS688DW
Active8-BIT IDENTITY/MAGNITUDE COMPARATORS (P=Q) WITH ENABLE
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SN74LS688DW
Active8-BIT IDENTITY/MAGNITUDE COMPARATORS (P=Q) WITH ENABLE
Deep-Dive with AI
Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | SN74LS688DW | SN74LS688 Series |
|---|---|---|
| Current - Output High, Low [custom] | 400 µA | 400 µA |
| Current - Output High, Low [custom] | 24 mA | 24 mA |
| Max Propagation Delay @ V, Max CL | 23 ns | 23 ns |
| Mounting Type | Surface Mount | Surface Mount, Through Hole |
| Number of Bits | 8 | 8 |
| Operating Temperature [Max] | 70 ░C | 70 ░C |
| Operating Temperature [Min] | 0 °C | 0 °C |
| Output | False | False |
| Output Function | A=B | A=B |
| Package / Case | 7.5 mm, 0.295 in | 0.209 - 7.5 mm |
| Package / Case | 20-SOIC | 20-SOIC, 20-DIP |
| Package / Case | - | 0.3 in |
| Package / Case | - | 7.62 mm |
| Supplier Device Package | 20-SOIC | 20-SOIC, 20-PDIP, 20-SO |
| Type | Identity Comparator | Identity Comparator |
| Voltage - Supply [Max] | 5.25 V | 5.25 V |
| Voltage - Supply [Min] | 4.85 V | 4.85 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 4.43 | |
| 10 | $ 2.94 | |||
| 25 | $ 2.55 | |||
| 100 | $ 2.11 | |||
| 177 | $ 1.70 | |||
| 250 | $ 1.90 | |||
| Texas Instruments | TUBE | 1 | $ 2.37 | |
| 100 | $ 2.08 | |||
| 250 | $ 1.46 | |||
| 1000 | $ 1.17 | |||
SN74LS688 Series
8-Bit Identity/Magnitude Comparators (P=Q) with Enable
| Part | Max Propagation Delay @ V, Max CL | Output | Mounting Type | Package / Case | Package / Case | Voltage - Supply [Min] | Voltage - Supply [Max] | Number of Bits | Output Function | Type | Current - Output High, Low [custom] | Current - Output High, Low [custom] | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments SN74LS688DW | 23 ns | Surface Mount | 0.295 in, 7.5 mm | 20-SOIC | 4.85 V | 5.25 V | 8 | A=B | Identity Comparator | 400 µA | 24 mA | 20-SOIC | 70 ░C | 0 °C | |||
Texas Instruments SN74LS688DWR | 23 ns | Surface Mount | 0.295 in, 7.5 mm | 20-SOIC | 4.85 V | 5.25 V | 8 | A=B | Identity Comparator | 400 µA | 24 mA | 20-SOIC | 70 ░C | 0 °C | |||
Texas Instruments SN74LS688N | 23 ns | Through Hole | 20-DIP | 4.85 V | 5.25 V | 8 | A=B | Identity Comparator | 400 µA | 24 mA | 20-PDIP | 70 ░C | 0 °C | 0.3 in | 7.62 mm | ||
Texas Instruments SN74LS688NSR | 23 ns | Surface Mount | 0.209 in, 5.3 mm | 20-SOIC | 4.85 V | 5.25 V | 8 | A=B | Identity Comparator | 400 µA | 24 mA | 20-SO | 70 ░C | 0 °C |
Description
General part information
SN74LS688 Series
These magnitude comparators perform comparisons of two eight-bit binary or BCD words. All types provide P = Q\ outputs and all except 'LS688 provide P > Q\ outputs as well. The 'LS682, 'LS684, 'LS686, and 'LS688 have totem-pole outputs, while the 'LS685 and 'LS687 have open-collector outputs. The 'LS682 features 20-kpullup termination resistors on the Q inputs for analog or switch data.
These magnitude comparators perform comparisons of two eight-bit binary or BCD words. All types provide P = Q\ outputs and all except 'LS688 provide P > Q\ outputs as well. The 'LS682, 'LS684, 'LS686, and 'LS688 have totem-pole outputs, while the 'LS685 and 'LS687 have open-collector outputs. The 'LS682 features 20-kpullup termination resistors on the Q inputs for analog or switch data.
Documents
Technical documentation and resources