
SN74ABT821ADW
Active10-BIT BUS INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS

SN74ABT821ADW
Active10-BIT BUS INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS
Description
General part information
74ABT821 Series
These 10-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers.
The ten flip-flops are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the devices provide true data at the Q outputs.
A buffered output-enable (OE\) input can be used to place the ten outputs in either a normal logic state (high or low logic levels) 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.
Technical Specifications
Parameters and characteristics for this part
| Specification | SN74ABT821ADW |
|---|---|
| Clock Frequency | 125 MHz |
| Current - Output High | 32 mA |
| Current - Output Low | 64 mA |
| Current - Quiescent (Iq) | 250 µA |
| Function | Standard |
| Input Capacitance | 3.5 pF |
| Max CL | 50 pF |
| Max Propagation Delay | 6.2 ns |
| Mounting Type | Surface Mount |
| Number of Bits per Element | 10 bits |
| Number of Elements | 1 |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Output Type | Tri-State, Non-Inverted |
| Package Length | 0.295 in |
| Package Name | 24-SOIC |
| Package Width | 7.5 mm |
| Trigger Type | Positive Edge |
| Type | D-Type |
| Voltage - Supply (Maximum) | 5.5 V |
| Voltage - Supply (Minimum) | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Sign in to see pricing
Create a free account to access distributor pricing data.
CAD
3D models and CAD resources for this part
Documents
Technical documentation and resources