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<strong>ITT</strong>7520, <strong>ITT</strong>7521<br />

DUAL-CHANNEL SENSE AMPLIFIERS<br />

WITH COMPLIMENTARY OUTPUTS<br />

SWITCHING CHARACTERISTICS, Vcc+ = 5 V, Vcc - = -5V, 100 pF, TA = 25°C<br />

Propagation Delay Times<br />

Test<br />

Symbol From Input To Output Fig. Min Typ Max Unit Test Conditions<br />

tPLH(OY) A1-A2 or B1-B2 Y 25 40 ns CL = 15 pF, RL = 288 {)<br />

32<br />

tPHL(OY) 20 ns<br />

tPLH(OZ) A1-A2 or B1-B2 Z 30 ns CL = 15 pF, RL = 288 {}<br />

tPHL(oz)<br />

32<br />

35 55 ns<br />

tPLH(SY) Strobe A or B Y<br />

32<br />

tPHL(SY) 20 ns<br />

15 39 ns CL = 15 pF, RL = 288 {)<br />

tPLH(SZ) Strobe A or B Z 30 ns CL = 15 pF,RL = 288 {)<br />

tPHL(SZ)<br />

32<br />

35 55 ns<br />

tPLH(GY, y) Gate Gy Y 15 25 ns CL = 15 pF, RL = 288 {)<br />

tPHL(GY, Y)<br />

33<br />

10 ns<br />

tPLH(GY, z) Gate Gy Z 15 ns CL = 15 pF, RL = 288 {)<br />

33<br />

tPHL(GY, z) 20 30 ns<br />

tPLH(GZ, z) Gate Gz Z 15 ns CL = 15 pF, RL = 288 {)<br />

tPHL(GZ, z)<br />

34<br />

10 20 ns<br />

TYPICAL RECOVERY AND CYCLE TIMES, Vcc+ = 5 V, Vcc - = -5 V, Cext ;;:;;: 100 pF, fA = 25°C<br />

Parameter<br />

Min<br />

Typ<br />

Max Unit Test Conditions<br />

torD<br />

torC<br />

tcyc(mln)<br />

Differential-input overload<br />

recovery time (see Note 5)<br />

Common-made-input overload<br />

recovery (see Note 6)<br />

Minimum cycle· time<br />

20 ns. Differential Input Pulse:<br />

VlD = 2 V, Ir = It = 20 ns<br />

20 ns Common-Made-Input Pulse:<br />

VIC = ± 2 V; tr = .It = 20 ns<br />

200 ns<br />

NOTES:<br />

5. Differential-input overload recovery lime<br />

is the time necessary for the device to recover·<br />

from the specified common-made-input overload<br />

signal prior to the strobe-enable signal.<br />

6. Common-made-input overload recovery time<br />

is the time necessary for the device to recover<br />

from the specified common-made-input overload<br />

signal prior to the strobe-enable signal.<br />

6-.8

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