DM74AS280M

Number of Circuits : 1
Number of Bits : 9
Low Level Output Current : 20 mA
Maximum Operating Temperature : + 70 C
Minimum Operating Temperature : 0 C
Packaging : Tube
Package / Case : SOIC-14
Operating Supply Voltage : 4.5 V to 5.5 V
Logic Family : 74AS
High Level Output Current : - 2 mA
Propagation Delay Time : 12 ns


Features:

·  Generates either odd or even parity for nine data lines
·  Inputs are buffered to lower the drive requirements
·  Can be used to upgrade existing systems using MSI
  parity circuits
·  Cascadable for N-bits
·  Advanced oxide-isolated, ion-implanted Schottky
  TTL process
·  Switching specifications at 50 pF
·  Switching specifications guaranteed over full
  temperature and VCC range


Pinout




Specifications

Supply Voltage........................................................... 7V
Input Voltage .............................................................7V
Operating Free Air Temperature Range ....0°C to +70°C
Storage Temperature Range ...............-65°C to +150°C
Typical qJA
N Package .......................................................77.0°C/W
M Package ...........................................................108.0°
Note 1: The "Absolute Maximum Ratings" are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The "Recommended Operating Conditions" table will define the conditions
for actual device operation.


Description

These universal, 9-bit parity generators/checkers DM74AS280M utilize advanced Schottky high performance circuitry and feature odd/even outputs to facilitate operation of either odd or even parity applications. The word length capability is easily expanded by cascading.

The DM74AS280 can be used to upgrade the performance of most systems utilizing the '180 parity generator/checker. Although the DM74AS280 is implemented without expander inputs, the corresponding function is provided by the availability of an input at pin 4 and no internal connection at pin 3. This permits the DM74AS280 to be substituted for the '180 in existing designs to produce identical function even if DM74AS280s are mixed with existing '180s.

If you want to know more about DM74AS280M, please feel free to contact Seekic.