参数资料
型号: MC10E1651FN
厂商: ON Semiconductor
文件页数: 6/9页
文件大小: 0K
描述: IC COMPARATOR DUAL ECL 20PLCC
产品变化通告: Product Discontinuation 07/Oct/2008
标准包装: 46
系列: MOSAIC III™
类型: 带锁销
元件数: 2
输出类型: 差分,ECL
电流 - 输出(标准): 100mA
电流 - 静态(最大值): 50mA
传输延迟(最大): 1.075ns
磁滞: 27mV
工作温度: 0°C ~ 85°C
封装/外壳: 20-LCC(J 形引线)
安装类型: 表面贴装
包装: 管件
其它名称: MC10E1651FNOS
MC10E1651
http://onsemi.com
6
DELAY DISPERSION
Under a constant set of input conditions comparators have
a specified nominal propagation delay. However, since
propagation delay is a function of input slew rate and input
voltage overdrive the delay dispersion parameters, TDE and
TDT, are provided to allow the user to adjust for these
variables (where TDE and TDT apply to inputs with standard
ECL and TTL levels, respectively).
Figure 4 and Figure 5 define a range of input conditions
which incorporate varying input slew rates and input voltage
overdrive. For input parameters that adhere to these
constraints the propagation delay can be described as:
TNOM ± TDE (or TDT)
where TNOM is the nominal propagation delay. TNOM
accounts for nonuniformity introduced by temperature and
voltage variability, whereas the delay dispersion parameter
takes into consideration input slew rate and input voltage
overdrive variability. Thus a modified propagation delay can
be approximated to account for the effects of input conditions
that differ from those under which the parts where tested. For
example, an application may specify an ECL input with a
slew rate of 0.25 V/NS, an overdrive of 17 mV and a
temperature of 25
°C, the delay dispersion parameter would
be 100 ps. The modified propagation delay would be
775 ps
± 100 ps
Figure 4. ECL Dispersion Test Input Conditions
Figure 5. TTL Dispersion Test Input Conditions
0 V
0.5 V
2.0 V
2.5 V
- 1.75 V
- 1.58 V
- 1.07 V
-0.9 V
SLEW RATE = 0.75 V/NS
SLEW RATE =
0.25 V/NS
SLEW RATE =
0.30 V/NS
INPUT
THRESHOLD
RANGE
INPUT
THRESHOLD
RANGE
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