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參數資料
| 型號： | ISL83387EIV |
| 廠商： | INTERSIL CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quadruple 2-Input Positive-OR Gates 14-SSOP -40 to 85 |
| 中文描述： | TRIPLE LINE TRANSCEIVER, PDSO24 |
| 封裝： | PLASTIC, MO-153AD, TSSOP-24 |
| 文件頁數： | 7/13頁 |
| 文件大?。?/td> | 181K |
| 代理商： | ISL83387EIV |
7
mode an RC time constant after this rising edge. The time
constant isn’t critical, because the ISL83387E remains
powered up for 30 seconds after the FORCEON falling
edge, even if there are no signal transitions. This gives slow-
to-wake systems (e.g., a mouse) plenty of time to start
transmitting, and as long as it starts transmitting within 30
seconds both systems remain enabled.
V
L
Logic Supply Input
Unlike other RS-232 interface devices where the CMOS
outputs swing between 0 and V
CC
, the ISL83387E features
a separate logic supply input (V
L
; 1.8V to 5V, regardless of
V
CC
) that sets V
OH
for the receiver and INVALID outputs.
Connecting V
L
to a host logic supply lower than V
CC
,
prevents the ISL83387E outputs from forward biasing the
input diodes of a logic device powered by that lower supply.
Connecting V
L
to a logic supply greater than V
CC
ensures
that the receiver and INVALID output levels are compatible
even with the CMOS input V
IH
of AC, HC, and CD4000
devices. Note that the V
L
supply current increases to 100
μ
A
with V
L
= 5V and V
CC
= 3.3V (see Figure 16). V
L
also
powers the transmitter and logic inputs, thereby setting their
switching thresholds to levels compatible with the logic
supply. This separate logic supply pin allows a great deal of
flexibility in interfacing to systems with different logic
supplies. If logic translation isn’t required, connect V
L
to the
ISL83387E V
CC
.
INVALID Output
The INVALID output always indicates (see Table 2) whether
or not 30
μ
s have elapsed with invalid RS-232 signals (see
TABLE 2. POWERDOWN LOGIC TRUTH TABLE
RCVR OR XMTR
EDGE WITHIN 30
SEC
FORCEOFF
INPUT
FORCEON
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
RS-232 LEVEL
PRESENT AT
RECEIVER INPUT
INVALID
OUTPUT
MODE OF OPERATION
NO
H
H
Active
Active
NO
L
Normal Operation (Enhanced
Auto Powerdown Disabled)
NO
H
H
Active
Active
YES
H
YES
H
L
Active
Active
NO
L
Normal Operation (Enhanced
Auto Powerdown Enabled)
YES
H
L
Active
Active
YES
H
NO
H
L
High-Z
Active
NO
L
Powerdown Due to Enhanced
Auto Powerdown Logic
NO
H
L
High-Z
Active
YES
H
X
L
X
High-Z
Active
NO
L
Manual Powerdown
X
L
X
High-Z
Active
YES
H
INVALID DRIVING FORCEON AND FORCEOFF
(EMULATES AUTOMATIC POWERDOWN)
X
NOTE 3
NOTE 3
Active
Active
YES
H
Normal Operation
X
NOTE 3
NOTE 3
High-Z
Active
NO
L
Forced Auto Powerdown
NOTES:
3. Input is connected to INVALID Output.
FIGURE 2. CONNECTIONS FOR MANUAL POWERDOWN
PWR
MGT
LOGIC
FORCEOFF, FORCEON
CPU
I/O
ISL83387E
UART
V
L
I/O CHIP
POWER SUPPLY
V
CC
INVALID
FIGURE 3. CIRCUIT TO ENSURE IMMEDIATE POWER UP
WHEN EXITING FORCED POWERDOWN
FORCEOFF
FORCEON
POWER
MANAGEMENT
UNIT
MASTER POWERDOWN LINE
1M
0.1
μ
F
ISL83387E
ISL83387E
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| ISL83387EIVZ | Quadruple 2-Input Positive-OR Gates 14-SOIC -40 to 85 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL83387EIV-T | 功能描述:IC 3DRVR/3RCVR RS232 3V 24-TSSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發(fā)器 驅動器/接收器數:2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應商設備封裝:16-PDIP 包裝:管件 |
| ISL83387EIVZ | 功能描述:RS-232接口集成電路 W/ANNEAL RS232 3V 3D /3R 15KV SHTDWN 24LD RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| ISL83387EIVZ-T | 功能描述:IC 3DRVR/3RCVR RS232 3V 24-TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/接收器數:2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| ISL83483 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:3.3V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers |
| ISL83483_04 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:3.3V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers |
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