参数资料
型号: LC5128B-5T128I
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: PLD
中文描述: EE PLD, 6.5 ns, PQFP128
封装: TQFP-128
文件页数: 30/66页
文件大小: 240K
代理商: LC5128B-5T128I
Lattice Semiconductor
ispMACH 5000B Family Data Sheet
36
Switching Test Conditions
Figure 9 shows the output test load that is used for AC testing. The specic values for resistance, capacitance, volt-
age, and other test conditions are shown in Table 3.
Figure 9. Output Test Load, LVTTL and LVCMOS Standards
Table 3. Test Fixture Required Components
Output test conditions for all other interfaces are determined by the respective standards.
Test Condition
R1
R2
CL
Timing Ref.
VCCO
Default LVCMOS 2.5 I/O (L -> H, H -> L)
188
35pF
VCCO/2
2.3V
Other LVCMOS Settings (L -> H, H -> L)
∞∞
35pF
LVCMOS 3.3 = 1.5V
LVCMOS 3.3 = 3.0V
LVCMOS 2.5 = VCCO/2
LVCMOS 2.5 = 2.3V
LVCMOS 1.8 = VCCO/2
LVCMOS 1.8 = 1.65V
Default LVCMOS 2.5 I/O (Z -> H)
188
35pF
VCCO/2
2.3V
Default LVCMOS 2.5 I/O (Z -> L)
188
35pF
VCCO/2
2.3V
Default LVCMOS 2.5 I/O (H -> Z)
188
5pF
VOH - 0.15
2.3V
Default LVCMOS 2.5 I/O (L -> Z)
188
5pF
VOL + 0.15
2.3V
VCCO
R1
R2
CL*
DUT
Test
Point
*CL includes Test Fixture and Probe Capacitance.
0213A/ispm5kb
Discontinued
Product
(PCN
#02-06).
Contact
Rochester
Electronics
for
Availability.
www.latticesemi.com/sales/discontinueddevicessales.cfm
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