74F403A

Serial or parallel input
Serial or parallel output
Expandable without external logic
3-STATE outputs
Fully compatible with all TTL families
Slim 24-pin package
9403A replacement
Guaranteed 4000V minimum ESD protection

Storage Temperature                                             -65°C to +150°C
Ambient Temperature under Bias                           -55°C to +125°C
Junction Temperature under Bias                           -55°C to +175°C
VCC Pin Potential to Ground Pin                                    -0.5V to +7.0V
Input Voltage (Note 2)                                                  -0.5V to +7.0V
Input Current (Note 2)                                            -30 mA to +5.0 mA
Voltage Applied to Output
In HIGH State (with VCC = 0V)
Standard Output                                                               -0.5V to VCC
3-STATE Output                                                              -0.5V to +5.5V
Current Applied to Output
in LOW State (Max)                                         twice the rated IOL (mA)
ESD Last Passing Voltage (Min)                                                    4000V

The 74F403A is an expandable fall-through type highspeed First-In First-Out (FIFO) Buffer Memory optimized for high-speed disk or tape controllers and communication buffer applications. It is organized as 16-words by 4-bits and may be expanded to any number of words or any number of bits in multiples of four. Data may be entered or extracted asynchronously in serial or parallel, allowing economical implementation of buffer memories.

The 74F403A has 3-STATE outputs which provide added versatility and is fully compatible with all TTL families.