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<strong>ITT</strong>3671<br />

HIGH-SPEED DUAL SENSE AMPLIFIER<br />

Logic Input Current Requirements<br />

Logic input current requirements are specified<br />

at worse case power supply conditions over<br />

the operating temperature range. The logic<br />

currents are compatible with Series 74 TTL integrated<br />

Circuits. Input circuits are shown in<br />

figures 14 thru 17; current requirements are<br />

specified in the dc characteristics table.<br />

+vcc<br />

5k 3.2k<br />

~--l--+I--t>---o 012<br />

OL<br />

=<br />

5k<br />

3.2 k<br />

Fig. 14-Equivalent Input Circuit Strobe and<br />

Channel Select<br />

Fig. 16-Equivalent Circuit Data Input &<br />

Data Load<br />

r-----------~+vcc<br />

Decoupling Node<br />

An 0.01 uf capacitor may be placed between<br />

pin 23 and ground to enhance the stability <strong>of</strong><br />

the input amplifiers.<br />

G<br />

=<br />

Fig. 17-Equivalent Buffer Input Circuit<br />

READ I<br />

CYCLE<br />

I<br />

CYCLE 2<br />

WRITE READ 0 WRITE<br />

Fig. 15<br />

Equivalent Buffer Input Buffer<br />

I'<br />

I<br />

RESET<br />

10 CT SIGNAL /"<br />

STROBE r ~<br />

I CHANNEL SELECT<br />

Fig. 18-Typical System<br />

Timing Diagram<br />

o .2<br />

I<br />

I<br />

DATA REGISTER OUTPUT<br />

.6 .8 1.0 1.2 1.4 1.6 1.8 2.0<br />

TIME IN<br />

nS<br />

6-62

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