參數(shù)資料
型號(hào)： LTC1334ISW#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 11/16頁(yè)
文件大小： 0K
描述： IC CMOS TXRX MULTIPROTOCL 28SOIC
標(biāo)準(zhǔn)包裝： 27
類型： 收發(fā)器
驅(qū)動(dòng)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
產(chǎn)品目錄頁(yè)面： 1355 (CN2011-ZH PDF)
4
LTC1334
AC ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the
safety of the device cannot be guaranteed.
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 VCC = 5V, C1 = C2 = C3 = C4 = 0.1F
and TA = 25°C.
Note 4: Short-circuit current for RS485 driver output low state folds back
above VCC. Peak current occurs around VO = 3V.
Note 5: The “B” RS232 receiver output is disabled in RS485 mode
(SEL1 = SEL2 = high). The unused output driver goes into a high
impedance mode and has a resistor to VCC. See Applications Information
section for more details.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Receiver Output High Voltage
vs Temperature
TEMPERATURE (
°C)
–50
OUTPUT
VOLTAGE
(V)
5.0
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4.0
0
50
75
LTC1334 TPC01
–25
25
100
125
IOUT = 3mA
VCC = 5V
TEMPERATURE (
°C)
–50
TIME
(ns)
20
18
16
14
12
10
8
6
4
2
0
50
75
LTC1334 TPC03
–25
25
100
125
VCC = 5V
RS485 Receiver Skew
tPLH – tPHL vs Temperature
TEMPERATURE (
°C)
–50
OUTPUT
VOLTAGE
(V)
0.5
0.4
0.3
0.2
0.1
0
50
75
LTC1334 TPC02
–25
25
100
125
IOUT = 3mA
VCC = 5V
Receiver Output Low Voltage
vs Temperature
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, C1 = C2 = C3 = C4 = 0.1F (Notes 2, 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS485 Mode (SEL1 = SEL2 = High)
tZL
Driver Enable to Output Low
Figures 3, 7, CL = 100pF, S1 Closed
q
50
90
ns
tZH
Driver Enable to Output High
Figures 3, 7, CL = 100pF, S2 Closed
q
50
90
ns
tLZ
Driver Disable from Low
Figures 3, 7, CL = 15pF, S1 Closed
q
50
90
ns
tHZ
Driver Disable from High
Figures 3, 7, CL = 15pF, S2 Closed
q
60
90
ns
tPLH
Receiver Input to Output
Figures 2, 8, RL = 54, CL = 100pF
q
20
60
140
ns
tPHL
Receiver Input to Output
Figures 2, 8, RL = 54, CL = 100pF
q
20
70
140
ns
tSKEW
Differential Receiver Skew,
tPLH – tPHL
Figures 2, 8, RL = 54, CL = 100pF
10
ns
相關(guān)PDF資料
PDF描述
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