CY7C008/009
CY7C018/019
AC Test Loads and Waveforms
5V
5V
R1 = 893Ω
OUTPUT
C = 30 pF
R2 = 347Ω
VTH = 1.4V
OUTPUT
C = 30 pF
R
TH
= 250Ω
R1 = 893Ω
OUTPUT
C = 5 pF
R2 = 347Ω
(a) Normal Load (Load 1)
(b) Thévenin Equivalent (Load 1)
(c) Three-State Delay (Load 2)
(Used for t
LZ
, t
HZ
, t
HZWE
, & t
LZWE
including scope and jig)
ALL INPUT PULSES
3.0V
GND
10%
≤
3 ns
90%
90%
10%
≤
3 ns
AC Test Loads (Applicable to -12 only)
1.00
∆
(ns) for all -12 access times
OUTPUT
C
Z
0
= 50Ω
R = 50Ω
0.90
0.80
0.70
V
TH
= 1.4V
0.60
0.50
(a) Load 1 (-12 only)
0.40
0.30
0.20
0.10
0.00
0
5
10
15
20
25
30
Capacitance (pF)
(b) Load Derating Curve
Notes:
11. Tested initially and after any design or process changes that may affect these parameters.
12. Test conditions: C = 0 pF.
Document #: 38-06041 Rev. *D
Page 6 of 19
CYPRESS [ CYPRESS SEMICONDUCTOR ]
