SN74BCT29821

Pinout




Specifications

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.5 V to 7 V
Input voltage range, V _I (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Voltage range applied to any output in the disabled or power-off state, V_O . 0.5 V to 5.5 V
Voltage range applied to any output in the high state, V_O . . . . . . . . . . . . . . . .0.5 V to V_CC
Current into any output in the low state, I_O   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
Operating free-air temperature range   . . .. . . . .  . . . . . . .  . . . . . . . . . . . . .  . .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.


Description

This SN74BCT29821 10-bit bus-interface flip-flop features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. It is
particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers.


The SN74BCT29821 ten flip-flops are edge-triggered D-type flip-flops. On the positive transition of the clock, the Q outputs will be true to the data (D) inputs.


A SN74BCT29821 buffered output-enable (OE) input can be used to place the ten outputs in either a normal logic state (high or low) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.


The SN74BCT29821 output enable (OE) does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.


The SN74BCT29821 is characterized for operation from 0°C to 70°C