Cypress Semiconductor CY7B991 Manuel d'utilisateur télécharger pdf (Page 5)

CY7B991

CY7B992

Capacitance

[12]

Parameter Description Test Conditions Max. Unit

Input Capacitance T

= 25

C, f = 1 MHz, V

= 5.0V 10 pF

Note:

12. Applies to REF and FB inputs only. Tested initially and after any design or process changes that may affect these parameters.

AC Test Loads and Waveforms

7B991–4

7B991–5

TTL ACTest Load (CY7B991) TTL Input Test Waveform (CY7B991)

7B991–6

CMOS AC Test Load (CY7B992)

3.0V

2.0V

=1.5V

0.8V

0.0V

≤

1ns

≤

1ns

2.0V

0.8V

=1.5V

80%

20%

0.0V

≤

3ns

≤

3ns

80%

20%

7B991–7

CMOS InputTest Waveform (CY7B992)

R1=130

R2=91

=50pF(C

=30 pF for –2 and –5 devices)

(Includes fixture and probe capacitance)

R1=100

R2=100

=50pF(C

(Includes fixture and probe capacitance)

=30 pF for –2 and –5 devices)

1 2 3 4 5 6 7 8 9 10 ... 13 14

Features 1
Functional Description 1
Block Diagram Description 2
Pin Definitions 2
Test Mode 3
Maximum Ratings 3
Operating Range 3
Electrical Characteristics 4
Capacitance 5
AC Test Loads and Waveforms 5
Switching Characteristics 6
AC Timing Diagrams 9
Operational Mode Descriptions 10
Figure 4 11
Figure 5 11
Figure 6 11
Figure 7 11
Figure 8 12
Group A Subgroup Testing 13
Ordering Information 13
DC Characteristics 13
MILITARY SPECIFICATIONS 13
CY7B991 14

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Cypress Semiconductor CY7B991 Manuel d'utilisateur Page 5

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