CGS74B303 datasheet(3/6 Pages) NSC

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AC Electrical Characteristics

Over recommended operating conditions unless specified otherwise All typical values are measured at VCC e 5V TA e 25 C

VCC e 45V to 55V

TA e 0 Cto a70 C

Symbol

Parameter

CL e 0 pF–50 pF

Units

RL e 500X

Min

Typ

Max

fMAX

Maximum Input Frequency (Note 2)

110

MHz

tPLH

Propagation Delay CLKn to On

tPHL

(Note 2)

tPLH

Propagation Delay PRECLR

411

tPHL

tSU

Set Up Time before CLK

CLK HI

CLK LO

CLRPRE

Extended AC Electrical Characteristics

Over recommended operating conditions unless specified otherwise All typical values are measured at VCC e 5V TA e 25 C

VCC e 45V to 55V

TA e 0 Cto a70 C

Symbol

Parameter

CL e 0 pF–50 pF

Units

RL e 500X

Min

Typ

Max

tOSHL Q

Maximum Skew Common Edge

Output-to-Output Variation (Notes 1 2)

tOSLH Q

Maximum Skew Common Edge

Output-to-Output Variation (Notes 1 2)

tOSHL Q

Maximum Skew Common Edge

Output-to-Output Variation

075

(Notes 1 2)

tOSLH Q

Maximum Skew Common Edge

Output-to-Output Variation

075

(Notes 1 2)

tOSLHHL QQ

Maximum Skew Common Edge

Output-to-Output Variation (Notes 1 2)

tPS Q

Maximum Skew Pin (Signal)

Transition Variation (Notes 1 2)

trise

RiseFall Time

tfall

(from 08V20V to 20V08V)

0 pF – 30 pF Loads

Note 1

Output-to-Output Skew is defined as the absolute value of the difference between the actual propagation delay for any outputs within the same packaged

device The specifications apply to any outputs switching in the same direction either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH) or in opposite directions both

HL and LH (tOST) Parameters tOST and tPS guaranteed by design

Note 2

This device is sensitive to noise due to the large transient currents which occur during multiple switching of the eight outptus VCC by-pass capacitor(s)

chip types must be placed as closely as possible to the VCC pin

Note 3

Refer to Minimum Skew Parameters Measurement Information Chart for definitions of each skew specification

Note 4

All input pulses are from 35V to 03V with rise and fall times of 20 ns

Note 5

Load capacitance includes the test jig

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CGS74B303 Datasheet(PDF) 3 Page - National Semiconductor (TI)

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