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CY7C027/028
CY7C037/038
Document #: 38-06042 Rev. *A
Page 6 of 19
AC Test Loads (Applicable to -12 only)[13]
Notes:
12. Tested initially and after any design or process changes that may affect these parameters.
13. Test Conditions: C = 0 pF.
Capacitance[12]
Parameter
Description
Test Conditions
Max.
Unit
CIN
Input Capacitance
TA = 25°C, f = 1 MHz,
VCC = 5.0V
10
pF
COUT
Output Capacitance
10
pF
AC Test Loads and Waveforms
3.0V
GND
90%
90%
10%
3ns
3 ns
10%
ALL INPUT PULSES
(a) Normal Load (Load 1)
R1 = 893
Ω
5V
OUTPUT
R2 = 347
Ω
C= 30 pF
VTH =1.4V
OUTPUT
C= 30 pF
(b) Thévenin Equivalent (Load 1)
(c) Three-State Delay (Load 2)
R1 = 893
Ω
R2 = 347
Ω
5V
OUTPUT
C= 5pF
RTH = 250Ω
≤
≤
(Used for tCKLZ, tOLZ, & tOHZ
including scope and jig)
VTH =1.4V
OUTPUT
C
(a) Load 1 (-12 only)
R = 50
Ω
(b) Load Derating Curve
Capacitance (pF)
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
0
5
10
15
20
25
30
Z0 = 50Ω
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