參數(shù)資料
型號: LTC1349IG#TR
廠商: Linear Technology
文件頁數(shù): 5/8頁
文件大?。?/td> 0K
描述: IC TXRX RS232 5V SHTDN LP 28SSOP
標(biāo)準(zhǔn)包裝: 2,000
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 3/5
規(guī)程: RS232
電源電壓: 4.5 V ~ 5 V
安裝類型: 表面貼裝
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 28-SSOP
包裝: 帶卷 (TR)
5
LTC1349
1349fa
UU
U
PI FU CTIO S
DRIVER IN: RS232 Driver Input Pins. Inputs are TTL/
CMOS compatible. Inputs should not be allowed to float.
Tie unused inputs to VCC.
DRIVER OUT: Driver Outputs at RS232 Voltage Levels.
Outputs are in a high impedance state when in Shutdown
mode or VCC = 0V. The driver outputs are protected against
ESD to ±10kV for human body model discharges.
RX IN: Receiver Inputs. These pins can be forced to ±25V
without damage. The receiver inputs are protected against
ESD to ±10kV for human body model discharges. Each
receiver provides 0.4V of hysteresis for noise immunity.
RX OUT: Receiver Outputs with TTL/CMOS Voltage Lev-
els. Receiver 1, 2 and 3 outputs are in a high impedance
state when in Shutdown mode to allow data line sharing.
Receivers 4 and 5 are kept alive in Shutdown.
SWITCHI G TI E WAVEFOR S
UW
W
Figure 1. Driver Propagation Delay Timing
Figure 2. Receiver Propagation Delay Timing
1.4V
0V
VCC
0V
V+
V
0V
DRIVER
INPUT
DRIVER
OUTPUT
1.4V
tHLD
tLHD
LTC1349 F01
0.8V
VCC
0V
2.4V
RX
INPUT
RX
OUTPUT
1.3V
tHLR
1.7V
tLHR
LTC1349 F02
VCC
0V
TEST CIRCUITS
Driver Timing Test Load
Receiver Timing Test Load
DRIVER
INPUT
3k
51pF
DRIVER
OUTPUT
LTC1349 TA03
RX
RX INPUT
51pF
RX
OUTPUT
LTC1349 TA04
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