CY7B991 Cypress Semiconductor, CY7B991 Datasheet - Page 5

• Manufacturer Part Number: CY7B991
• Description: Programmable Skew Clock Buffer
• Manufacturer: Cypress Semiconductor

Capacitance
AC Test Loads and Waveforms
Document #: 38-07138 Rev. **
CMOS AC Test Load (CY7B992)
C
Note:
12. Applies to REF and FB inputs only. Tested initially and after any design or process changes that may affect these parameters.
TTL AC Test Load (CY7B991)
IN
Parameter
C
C
L
L
[12]
V
CC
5V
Input Capacitance
R1
R2
R1
R2
7B991–4
7B991–6
Description
R1=130
R2=91
C
(Includes fixture and probe capacitance)
R1=100
R2=100
C
(Includes fixture and probe capacitance)
L
L
= 50 pF (C
= 50 pF (C
L
L
=30 pF for –2 and –5 devices)
=30 pF for –2 and –5 devices)
T
A
= 25 C, f = 1 MHz, V
Test Conditions
CC
V
th
= 5.0V
V
CMOS Input Test Waveform (CY7B992)
th
= V
TTL Input Test Waveform (CY7B991)
=1.5V
0.0V
0.0V
3ns
1ns
CC
0.8V
20%
2.0V
80%
/2
3.0V
V
CC
Max.
10
2.0V
80%
V
V
0.8V
20%
th
th
3ns
1ns
=1.5V
= V
CY7B991
CY7B992
CC
Page 5 of 15
7B991–5
7B991–7
Unit
/2
pF