Bus Transceivers Oct Bus Tran and Reg
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Logic Type : | Bipolar | Logic Family : | 74F | ||
Number of Channels per Chip : | 8 | Input Level : | TTL | ||
Output Level : | TTL | Output Type : | 3-State | ||
High Level Output Current : | - 15 mA | Low Level Output Current : | 64 mA | ||
Propagation Delay Time : | 8 ns | Supply Voltage - Max : | 5.5 V | ||
Supply Voltage - Min : | 4.5 V | Maximum Operating Temperature : | + 70 C | ||
Package / Case : | SOIC-24 | Packaging : | Tube |
The 74F646SC consist of bus transceiver circuits with 3-STATE, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes to a high logic level. Control G and direction pins of the 74F646SC are provided to control the transceiver function. In the transceiver mode, data present at the high impedance port may be stored in either the A or the B register or in both. The select controls can multiplex stored and real-time (transparent mode) data. The direction control determines which bus will receive data when the enable control G is Active LOW. In the isolation mode (control G HIGH) of the 74F646SC, A data may be stored in the B register and/or B data may be stored in the A register.