xcr3128 Xilinx Corp., xcr3128 Datasheet - Page 14

• Manufacturer Part Number: xcr3128
• Description: Xcr3128 128 Macrocell Cpld
• Manufacturer: Xilinx Corp.

Switching Characteristics
The test load circuit and load values for the AC Electrical Characteristics are illustrated below.
Figure 6: t
DS034 (v1.2) August 10, 2000
t
PD_PAL
V
(ns)
IN
9.1
8.7
8.3
7.9
7.5
1
V
PD_PAL
S1
DD
R
= 3.3V, 25 C
V
CC
S2
R1
R2
2
vs. Output Switching
NUMBER OF OUTPUTS SWITCHING
C1
4
V
OUT
8
12
SP00466A
16
www.xilinx.com
1-800-255-7778
Note: For t
measured 0.5V from steady-state active level.
MEASUREMENT
COMPONENT
Figure 7: Voltage Waveform
Table 6: t
(V
Number Of
Typical (ns)
t
t
CC
Outputs
R1
R2
C1
PZH
PZL
MEASUREMENTS:
All circuit delays are measured at the +1.5V level of
inputs and outputs, unless otherwise specified.
t
P
PHZ
= 3.3 V, T = 25°C)
+3.0V
and t
0V
PD_PAL
PLZ
C = 5 pF, and 3-state levels are
7.9
1
vs. Number of Outputs Switching
XCR3128: 128 Macrocell CPLD
1.5ns
VALUES
Closed
Closed
390
390
Open
35 pF
S1
Input Pulses
2
8
t
R
8.1
4
t
F
8.3
8
1.5ns
Closed
Closed
Closed
90%
S2
8.4
SP00368
12
10%
SP00477
8.6
16
14