Texas Instruments SNJ54AS821AJT
- Part Number:
- SNJ54AS821AJT
- Manufacturer:
- Texas Instruments
- Ventron No:
- 6388395-SNJ54AS821AJT
- Description:
- 10-Bit Bus Interface Flip-Flops With 3-State Outputs
- Datasheet:
- sn54as821a
- Number of channels10
- Technology familyAS
- Supply voltage (min) (V)4.5
- Supply voltage (max) (V)5.5
- Input typeBipolar
- Output type3-State
- Clock frequency (max) (MHz)125
- IOL (max) (mA)48
- IOH (max) (mA)-24
- Supply current (max) (μA)113000
- FeaturesHigh speed (tpd 10-50ns)
- Operating temperature range (°C)-55 to 125
- RatingMilitary
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 Q outputs are true to the data (D) input.
A buffered output-enable () 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 interface or pullup components.
does not affect the internal operation of the flip-flops. Previously stored data can be retained or new data can be entered while the outputs are in the high-impedance state.
The SN54AS821A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74AS821A is characterized for operation from 0°C to 70°C.
Flip Flop D-Type Bus Interface Pos-Edge 3-ST 1-Element 24-Pin CDIP Tube
AS SERIES 10-BIT DRIVER TRUE OUTPUT CDIP24
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