NTE8542 データシートの表示（PDF） - NTE Electronics

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NTE8542

Integrated Circuit Tri−State Quad I/O Register

NTE Electronics 

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, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V

Input Voltage, Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V

Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V

Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C

Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C

Recommended Operating Conditions:

Parameter

Supply Voltage

Temperature

Symbol Min Max Unit

VCC 4.75 5.25 V

TA

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.

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