| Part Number | CY74FCT399ATQCT | CY74FCT399CTQCT | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | Logic - Signal Switches, Multiplexers, Decoders | Logic - Signal Switches, Multiplexers, Decoders | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Type | Multiplexer | Multiplexer | 
| Circuit | 4 x 1:1 | 4 x 1:1 | 
| Independent Circuits | 1 | 1 | 
| Current - Output High, Low | 32mA, 64mA | 32mA, 64mA | 
| Voltage Supply Source | Single Supply | Single Supply | 
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 16-SSOP (0.154", 3.90mm Width) | 16-SSOP (0.154", 3.90mm Width) | 
| Supplier Device Package | 16-SSOP | 16-SSOP |