參數(shù)資料
型號: BT457KG125
英文描述: Video DAC with Color Palette (RAMDAC)
中文描述: 視頻DAC的調(diào)色板(的RAMDAC)
文件頁數(shù): 57/60頁
文件大小: 647K
代理商: BT457KG125
Bt457/Bt458
5.0 Parametric Information
125 MHz/135 MHz/165 MHz Monolithic CMOS 256 Color Palette RAMDAC
5.5 Revision History
L45801 Rev. N
Conexant
5-15
5.5 Revision History
Table 5-7. Revision History
Datasheet Revision
Change From Previous Revision
I
Expanded PC Board Layout Considerations section. Changed AC parameter "CE* asserted to
data bus driven" from 10 ns to 7 ns minimum.
J
Changed AC parameter "VAA Supply Current (Max)" for the Bt457: 80 MHz changed from
190 mA to 220 mA, 110 MHz changed from 210 mA to 240 mA, and 125 MHz changed from
220 mA to 250 mA.
K
Changed speed grade from 170 MHz to 165 MHz. Changed PLL feedback circuitry.
Consolidated Bt458 power specifications. Changed AC Characteristics CLOCK, Load Cycle,
and Pulse Width times. Changed typical analog output delay times.
L
Added 135 MHz speed grade.
M
Revised PCB Layout section.
N
Bt451 obsolete.
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