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参数资料
型号： LTC491IS
厂商： Linear Technology
文件页数： 6/12页
文件大小： 0K
描述： IC TXRX RS485 LOWPWR DIFF 14SOIC
标准包装： 55
类型： 收发器
驱动器/接收器数： 1/1
规程： RS422，RS485
电源电压： 4.75 V ~ 5.25 V
安装类型： 表面贴装
封装/外壳： 14-SOIC（0.154"，3.90mm 宽）
供应商设备封装： 14-SOIC
包装： 管件
3
LTC491
491fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPLH
Driver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
10
30
50
ns
tPHL
Driver Input to Output
q
10
30
50
ns
tSKEW
Driver Output to Output
q
5ns
tr, tf
Driver Rise or Fall Time
q
515
25
ns
tZH
Driver Enable to Output High
CL = 100pF (Figures 4, 6) S2 Closed
q
40
70
ns
tZL
Driver Enable to Output Low
CL = 100pF (Figures 4, 6) S1 Closed
q
40
70
ns
tLZ
Driver Disable Time From Low
CL = 15pF (Figures 4, 6) S1 Closed
q
40
70
ns
tHZ
Driver Disable Time From High
CL = 15pF (Figures 4, 6) S2 Closed
q
40
70
ns
tPLH
Receiver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
40
70
150
ns
tPHL
Receiver Input to Output
q
40
70
150
ns
tSKD
tPLH – tPHL Differential Receiver Skew
q
13
ns
tZL
Receiver Enable to Output Low
CL = 15pF (Figures 3, 8) S1 Closed
q
20
50
ns
tZH
Receiver Enable to Output High
CL = 15pF (Figures 3, 8) S2 Closed
q
20
50
ns
tLZ
Receiver Disable From Low
CL = 15pF (Figures 3, 8) S1 Closed
q
20
50
ns
tHZ
Receiver Disable From High
CL = 15pF (Figures 3, 8) S2 Closed
q
20
50
ns
S
U
GC
C
HARA TERISTICS
WITCHI
(Figures 2, 5)
(Figures 2, 7)
Note 3: All typicals are given for VCC = 5V and temperature = 25°C.
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.
NC (Pin 1): Not Connected.
R (Pin 2): Receiver Output. If the receiver output is enabled
(REB low), then if A > B by 200mV, R will be high. If A < B
by 200mV, then R will be low.
REB (Pin 3): Receiver Output Enable. A low enables the
receiver output, R. A high input forces the receiver output
into a high impedance state.
DE (Pin 4): Driver Output Enable. A high on DE enables the
driver outputs, Y and Z. A low input forces the driver
outputs into a high impedance state.
D (Pin 5): Driver Input. If the driver outputs are enabled
(DE high), then a low on D forces the driver outputs Y low
and Z high. A high on D will force Y high and Z low.
GND (Pin 6): Ground Connection.
GND (Pin 7): Ground Connection.
NC (Pin 8): Not Connected.
Y (Pin 9): Driver Output.
Z (Pin 10): Driver Output.
B (Pin 11): Receiver Input.
A (Pin 12): Receiver Input.
NC (Pin 13): Not Connected.
VCC (Pin 14): Positive Supply; 4.75V ≤ VCC ≤ 5.25V.
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V ±5%
UU
U
PI FU CTIO S
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相关代理商/技术参数
参数描述
LTC491IS#PBF 功能描述:IC TXRX RS485 LOW POWER 14-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:RS-232 & USB Transceiver 标准包装:2,000 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SSOP（0.209"，5.30mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:296-19849-2
LTC491IS#PBF 制造商:Linear Technology 功能描述:Driver/Receiver IC
LTC491IS#TR 功能描述:IC TXRX RS485 LOW POWER 14-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件
LTC491IS#TRPBF 功能描述:IC TXRX RS485 LOW POWER 14-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件
LTC491ISPBF 制造商:Linear Technology 功能描述:RS-485/RS-422 Driver/Receiver SOIC14
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