SN74F623

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Input voltage range, V_I (excluding I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 V to 7 V
Input current range, I_IK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA to 5 mA
Voltage range applied to any output in the disabled or power-off state . . . . . . . . . . . . . . . . . . .  0.5 V to 5.5 V
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to V_CC
Current into any output in the low state: SN54F623 (A1A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
                                                                 SN54F623 (B1B8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
                                                                 SN74F623 (A1A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA
                                                                 SN74F623 (B1B8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Operating free-air temperature range: SN54F623 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C
                                                             SN74F623 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . 65°C to 150°C

‡ Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The input-voltage ratings may be exceeded provided the input-current ratings are observed.

These SN74F623 octal bus transceivers are designed for asynchronous communication between data buses. The control function implementation allows for maximum flexibility in timing.

These SN74F623 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic levels at the output enable (OEAB and OEBA) inputs.

The SN74F623 output-enable inputs can be used to disable the device so that the buses are effectively isolated. The dual-enable configuration gives the transceivers the capability of storing data by simultaneously enabling OEAB and OEBA. Each output reinforces its input in this configuration. When both OEAB and OEBA are enabled and all other data sources to the two sets of bus lines are at high impedance, both sets of bus lines (16 in all) will remain at their last states.

The SN54F623 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74F623 is characterized for operation from 0°C to 70°C.