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PDF 29050H Data sheet ( Hoja de datos )

Número de pieza 29050H
Descripción HD29050
Fabricantes ETC 
Logotipo ETC Logotipo



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No Preview Available ! 29050H Hoja de datos, Descripción, Manual

HD29050www.DataSheet4U.com
Dual Differential Line Drivers / ReceiversWith 3 State Outputs
The HD29050 features differential line drivers /
receivers with three state output designed to meet
the spec of EIA RS – 422A and 423A. Each device
has two drivers / receivers in a 16 pin package.
The device becomes in enable state when active
high for a driver and active low for a receiver.
Features
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Driver
Built in current restriction when short circuit
Power up / down protection.
High output current
I OH = –40 mA
IOL = 40 mA
Receiver
Input hysteresis (Typ. 50 mV)
In phase input voltage ±200 mV of input
sensitivity in the range –7 to +12 V.
Pin Arrangement
R1B 1
R1A 2
R1Y 3
R
Enable
4
R2Y 5
R2A 6
R2B 7
GND 8
16 VCC
15 D1A
14 D1Y
13 D1Z
12 D
Enable
11 D2Z
10 D2Y
9 D2A
(Top View)
Function Table
Drivers
Input A
Enable
Output Y
LHL
HH
H
XL
Z
Output Z
H
L
Z
Receivers
Differential Input A – B
VID 0.2 V
Enable
L
–0.2 V < VID < 0.2 V
VID –0.2 V
L
L
XH
H : High level
L : Low level
Z : High impedance
X : Immaterial
? : Irrelevant
Output Y
H
?
L
Z
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29050H pdf
HD29050www.DataSheet4U.com
Switching Characteristics (Ta = 25°C, VCC = 5 V)
Driver
HD29050
Item
Propagation Delay
Time
Propagation Delay
Time Difference
Output Enable Time
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Output Disable Time
Symbol Min Typ
tPLHD
tPHLD
tSKD *1
tZHD
tZLD
tHZD
tLZD
Max
20
20
4
20
35
20
25
Unit
ns
ns
ns
ns
ns
ns
ns
Conditions
CL = 30 pF, RL = 75 to GND
RL = 180 to VCC
CL = 30 pF, RL = 75 to GND
RL = 180 to VCC
CL = 30 pF, RL = 75 to GND
RL = 180 to VCC
CL = 30 pF
RL = 75 to GND
CL = 30 pF
RL = 180 to VCC
CL = 10 pF
RL = 75 to GND
CL = 10 pF
Receiver
Item
Propagation Delay
Time
Output Enable Time
Output Disable Time
Symbol Min Typ
tPLHR
tPHLR
tZHR
tZLR
tHZR
tLZR
Max
40
40
20
25
30
30
Unit
ns
Conditions
CL = 15 pF
ns CL = 15 pF
ns CL = 15 pF
RL = 5 Kto GND
ns CL = 15 pF
RL = 2 Kto VCC
ns CL = 15 pF, RL = 5 Kto GND
RL = 2 Kto VCC
ns
Note: 1. tSKD = tPLHD tPHLD
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