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參數(shù)資料
| 型號(hào)： | DS1486P-150 |
| 英文描述： | RAMified Watchdog Timekeeper |
| 中文描述： | 網(wǎng)狀看門狗計(jì)時(shí) |
| 文件頁(yè)數(shù)： | 13/17頁(yè) |
| 文件大?。?/td> | 251K |
| 代理商： | DS1486P-150 |
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DS1486/DS1486P
13 of 17
NOTES:
1.
WE
is high for a read cycle.
2.
OE
= V
IH
or V
IL
. If
OE
= V
IH
during write cycle, the output buffers remain in a high impedance state.
3.
t
WP
is specified as the logical AND of the
CE
and
WE
. t
WP
is measured from the latter of
CE
or
WE
going low to the earlier of
CE
or
WE
going high.
4.
t
DS
or t
DH
are measured from the earlier of
CE
or
WE
going high.
5.
t
DH
is measured from
WE
going high. If
CE
is used to terminate the write cycle, then t
DH
= 20 ns for
-120 parts and t
DH
= -25 ns for -150 parts.
6.
If the
CE
low transition occurs simultaneously with or later than the
WE
low transition in write cycle
1, the output buffers remain in a high impedance state during this period.
7.
If the
CE
high transition occurs prior to or simultaneously with the
WE
high transition, the output
buffers remain in a high impedance state during this period.
8.
If
WE
is low or the
WE
low transition occurs prior to or simultaneously with the
CE
low transition,
the output buffers remain in a high impedance state during this period.
9.
Each DS1486 is marked with a four-digit date code AABB. AA designates the year of manufacture.
BB designates the week of manufacture. The expected t
DR
is defined for DIP Modules as starting at
the date of manufacture.
10.
All voltages are referenced to ground.
11.
Applies to both interrupt pins when the alarms are set to pulse.
12.
Interrupt output occurs within 100 ns on the alarm condition existing.
13.
Both
INTA
and
INTB
(INTB) are open drain outputs.
14.
Real-Time Clock Modules (DIP) can be successfully processed through conventional wave-soldering
tech-niques as long as temperature exposure to the lithium energy source contained within does not
exceed +85 C. Post-solder cleaning with water washing techniques is acceptable, provided that
ultrasonic vibration is not used.
In addition, for the PowerCap version:
a.
Dallas Semiconductor recommends that PowerCap Module bases experience one pass through
solder reflow oriented with the label side up (“l(fā)ive - bug”).
b.
Hand Soldering and touch-up: Do not touch or apply the soldering iron to leads for more than
3 seconds. To solder, apply flux to the pad, heat the lead frame pad and apply solder. To
remove the part, apply flux, heat the lead frame pad until the solder reflows and use a solder
wick to remove solder.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1486-120 | RAMified Watchdog Timekeeper |
| DS1486-150 | RAMified Watchdog Timekeeper |
| DS1489AJ | Line Receiver |
| DS1489AMX | Line Receiver |
| DS1489MX | Line Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
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| DS1487M | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| DS1487M/NOPB | 功能描述:RS-422/RS-485 接口 IC LO PR RS485/1/4 UNIT LOAD MULTIPT XCVR RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| DS1487M/NOPB | 制造商:Texas Instruments 功能描述:Transceiver IC |
| DS1487MX | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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