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The MM74HCT138 decoder utilizes advanced silicon-gate CMOS technology, and are well suited to memory address decoding or data routing applications. Both circuits feature high noise immunity and low power consumption usually associated with CMOS circuitry, yet have speeds comparable to low power Schottky TTL logic.The MM74HCT138 have 3 binary select inputs (A, B, and C). If the device is enabled these inputs determine which one of the eight normally HIGH outputs will go LOW. Two active LOW and one active HIGH enables (G1, G2A and G2B) are provided to ease the cascading decoders.The decoders' output can drive 10 low power Schottky TTL equivalent loads and are functionally and pin equivalent to the 74LS138. All inputs are protected from damage due to static discharge by diodes to VCC and ground.MM74HCT devices are intended to interface between TTL and NMOS components and standard CMOS devices. These parts are also plug-in replacements for LS-TTL devices and can be used to reduce power consumption in existing designs.
| Logic Family / Base Number | 74HCT138 |
| Logic Type | Decoder |
| No. of Outputs | 8Outputs |
| Logic Case Style | SOIC |
| No. of Pins | 16Pins |
| Supply Voltage Min | 4.5V |
| Supply Voltage Max | 5.5V |
| Logic IC Family | 74HCT |
| Logic IC Base Number | 74138 |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Packaging | Each |
| Product Range | - |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | - |
| SVHC | No SVHC (15-Jun-2015) |
| Applications | Data Routing, Memory Address Decoding |
| Base Number | 74 |
| IC Applications | Data Routing, Memory Address Decoding |
| IC Generic Number | 74HCT138 |
| Logic Function Number | 74138 |
| Logic IC Function | 3-to-8 Line Inverting Decoder/Demultiplexer |
| No. of Gates | 1 |
| No. of Inputs | 3 |
| Operating Temperature Range | -40°C to +85°C |
| Output Current Max | 4.8mA |
| Supply Voltage Range | 4.5V to 5.5V |
| Termination Type | Surface Mount Device |
| number_of_outputs | 8 |
| reach_svhc_compliance | No SVHC |
| number_of_gates | 1 |
| rohs_status | Compliant |
| supply_voltage_dc | 5.00 V |
| lead_free_status | Lead Free |
| mounting_style | Surface Mount |
| packaging | Tube |
| case_package | SOIC |
| lifecycle_status | Active |
| pin_count | 16 |
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