NTE8542 Datasheet, PDF (1/4 Pages) NTE Electronics – Integrated Circuit Tri−State Quad I/O Register

NTE8542
Integrated Circuit
Tri−State Quad I/O Register
General Description:
The NTE8542 is a 4−bit storage register with two terminals per bit which may be used as either inputs
or outputs when tied to two bus lines. Storage capability is obtained with positive edge triggered flip−
flops having common clock and asynchronous clear. Each I/O terminal can be forced to a high imped-
ance state (Hi−z state) using the Output Disable controls.
Features:
D Series 54/74 compatible
D Input clamp diodes
D Propagation delays . . . . . . . 25ns
D Power dissipation . . . . . . 400mW
D Operation . . . . . . . . . . . . . 40MHz
Absolute Maximum Ratings: (Note 1)
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V
Input Voltage, V_i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Output Voltage, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C
Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
Recommended Operating Conditions:
Parameter
Supply Voltage
Temperature
Symbol Min Max Unit
V_CC 4.75 5.25 V
T_A
0 +70 °C
Note 1. “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot
be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that
the devices should be operated at these limits. The table of “Electrical Characteristics” pro-
vides conditions for actual device operation.