| Part Number | SN74HC688PWRG4 | SN74HC688DWRG4 | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | Logic - Comparators | Logic - Comparators | 
|   |   | |
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | 
| Type | Identity Comparator | Identity Comparator | 
| Number of Bits | 8 | 8 | 
| Output | Active Low | Active Low | 
| Output Function | A=B | A=B | 
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 
| Current - Output High, Low | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 
| Max Propagation Delay @ V, Max CL | 36ns @ 6V, 50pF | 36ns @ 6V, 50pF | 
| Current - Quiescent (Iq) | 8 µA | 8 µA | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | 20-SOIC (0.295", 7.50mm Width) | 
| Supplier Device Package | 20-TSSOP | 20-SOIC | 
| Mounting Type | Surface Mount | Surface Mount |