參數(shù)資料
型號： LTC1387IG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 通用總線功能
英文描述： Single 5V RS232/RS485 Multiprotocol Transceiver
中文描述： LINE TRANSCEIVER, PDSO20
封裝： 0.209 INCH, PLASTIC, SSOP-20
文件頁數(shù)： 4/12頁
文件大小： 167K
代理商： LTC1387IG
4
LTC 1387
AC ELECTRICAL CHARACTERISTICS
T
A
= 25
°
C, V
CC
= 5V, C1 = C2 = C3 = C4 = 0.1
μ
F (Notes 2, 3), unless otherwise noted.
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 3:
All typicals are given at V
CC
= 5V, C1 = C2 = C3 = C4 = 0.1
μ
F
and T
A
= 25
°
C.
Note 4:
Short-circuit current for RS485 driver output low state folds back
above V
CC
. Peak current occurs around V
O
= 3V.
Note 5:
SLEW includes an internal pull-up in RS485 mode.
PI
FU
CTIO
N
S
U
U
C1
+
(Pin 1):
Commutating Capacitor C1 Positive Terminal.
Requires an external 0.1
μ
F capacitor between Pins 1 and 2.
C1
–
(Pin 2):
Commutating Capacitor C1 Negative Terminal.
V
DD
(Pin 3):
Charge Pump Positive Supply Output.
Requires an external 0.1
μ
F capacitor to ground.
A (Pin 4):
Receiver Input A. Inverting input of RS232
receiver A in RS232 mode; inverting RS485 receiver input
in RS485 mode.
B (Pin 5):
Receiver Input B. Inverting input of RS232
receiver B in RS232 mode; noninverting RS485 receiver
input in RS485 mode.
Y (Pin 6):
Driver Output Y. Inverting RS232 driver Y output
in RS232 mode; inverting RS485 driver output in RS485
mode.
Z (Pin 7):
Driver Output Z. Inverting RS232 driver Z output
in RS232 mode; noninverting RS485 driver output in
RS485 mode.
SYMBOL
RS485 Mode (Fast Slew Rate, ON = DXEN = High, 485/232 = High, SLEW = High)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
t
ZL
t
ZH
t
LZ
t
HZ
RS485 Mode (Slow Slew Rate, ON = DXEN = High, 485/232 = High, SLEW = Low)
t
PLH
Driver Input to Output
t
PHL
Driver Input to Output
t
SKEW
Driver Output to Output
t
r
, t
f
Driver Rise or Fall Time
t
ZL
Driver Enable to Output Low
t
ZH
Driver Enable to Output High
t
LZ
Driver Disable from Low
t
HZ
Driver Disable from High
RS485 Mode (ON = RXEN = High, 485/232 = High)
t
PLH
Receiver Input to Output
t
PHL
Receiver Input to Output
t
SKEW
Differential Receiver Skew,
t
PLH
– t
PHL
Receiver Output Enable/Disable (ON = High)
t
ZL
Receiver Enable to Output Low
t
ZH
Receiver Enable to Output High
t
LZ
Receiver Disable from Low
t
HZ
Receiver Disable from High
Driver Enable to Output Low
Driver Enable to Output High
Driver Disable from Low
Driver Disable from High
Figures 3, 8, C
L
= 100pF, S1 Closed
Figures 3, 8, C
L
= 100pF, S2 Closed
Figures 3, 8, C
L
= 15pF, S1 Closed
Figures 3, 8, C
L
= 15pF, S2 Closed
G
50
50
50
60
90
90
90
90
ns
ns
ns
ns
G
G
G
Figures 2, 7, R
L
= 54
, C
L
= 100pF
Figures 2, 7, R
L
= 54
, C
L
= 100pF
Figures 2, 7, R
L
= 54
, C
L
= 100pF
Figures 2, 7, R
L
= 54
, C
L
= 100pF
Figures 3, 8, C
L
= 100pF, S1 Closed
Figures 3, 8, C
L
= 100pF, S2 Closed
Figures 3, 8, C
L
= 15pF, S1 Closed
Figures 3, 8, C
L
= 15pF, S2 Closed
G
100
100
700
700
200
300
600
600
100
100
1500
1500
750
1500
1500
1500
200
200
ns
ns
ns
ns
ns
ns
ns
ns
G
G
G
150
G
G
G
G
Figures 2, 9, R
L
= 54
, C
L
= 100pF
Figures 2, 9, R
L
= 54
, C
L
= 100pF
Figures 2, 9, R
L
= 54
, C
L
= 100pF
G
20
20
70
70
10
140
140
ns
ns
ns
G
Figures 6, 12, C
L
= 15pF, S1 Closed
Figures 6, 12, C
L
= 15pF, S2 Closed
Figures 6, 12, C
L
= 15pF, S1 Closed
Figures 6, 12, C
L
= 15pF, S2 Closed
G
40
40
40
40
90
90
90
90
ns
ns
ns
ns
G
G
G
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1387IG#PBF 功能描述:IC TXRX RS232/RS485 5VSNGL20SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 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-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2
LTC1387IG#PBF 制造商:Linear Technology 功能描述:RS232/RS485 Transceiver IC
LTC1387IG#TR 功能描述:IC TXRX RS232/RS485 5V 20SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
LTC1387IG#TRPBF 功能描述:IC TXRX RS232/RS485 5VSNGL20SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
LTC1387IGPBF 制造商:Linear Technology 功能描述:RS-232/RS-485 Transceiver 5V SSOP20
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