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| Part Number | SN74HCS20QPWRQ1 | SN74HCS27QPWRQ1 | SN74HCS21QPWRQ1 | SN74HCS30QPWRQ1 | SN74HCS00QPWRQ1 | SN74HCS10QPWRQ1 | 
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | 
| Product Status | Active | Active | Active | Active | Active | Active | 
| Logic Type | NAND Gate | NOR Gate | AND Gate | NAND Gate | NAND Gate | NAND Gate | 
| Number of Circuits | 2 | 3 | 2 | 1 | 4 | 3 | 
| Number of Inputs | 4 | 3 | 4 | 8 | 2 | 3 | 
| Features | Schmitt Trigger Input | Schmitt Trigger Input | Schmitt Trigger Input | Schmitt Trigger Input | Schmitt Trigger Input | Schmitt Trigger Input | 
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 
| Current - Quiescent (Max) | 2 µA | 2 µA | 2 µA | 2 µA | 2 µA | 2 µA | 
| Current - Output High, Low | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 
| Logic Level - Low | 1V ~ 3V | 1V ~ 3V | 1V ~ 3V | 1V ~ 3V | 1V ~ 3V | 1V ~ 3V | 
| Logic Level - High | 1.5V ~ 4.2V | 1.5V ~ 4.2V | 1.5V ~ 4.2V | 1.5V ~ 4.2V | 1.5V ~ 4.2V | 1.5V ~ 4.2V | 
| Max Propagation Delay @ V, Max CL | 19ns @ 6V, 50pF | 12ns @ 6V, 50pF | 16ns @ 6V, 50pF | 27ns @ 6V, 50pF | 12ns @ 6V, 50pF | 16ns @ 6V, 50pF | 
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C (TA) | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Supplier Device Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) |