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HT6571 View Datasheet(PDF) - Holtek Semiconductor

Part NameDescriptionManufacturer
HT6571 Multiple RS-232 Drivers and Receivers Holtek
Holtek Semiconductor Holtek
HT6571 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
HT6571
Multiple RS-232 Drivers and Receivers
Features
· Single-chip with easy interface between UART and
serial port connector
· Three drivers and five receivers meet or exceed the
requirements of EIA/TIA-232-D
· Designed to support data rates up to 120 Kbit/s
· Driver current-limited output: 25mA typ.
· Flexible supply voltage range
· ESD protection exceeds 5kV
· 20-pin SOP package
General Description
The HT6571 is a CMOS device containing three RS-232
line drivers, and five RS-232 line receivers that are used
Block Diagram
to interface data terminal equipment (DTE) with data cir-
cuit-terminating equipment (DCE).
Pin Assignment
RA1
RY1
RA2
RY2
RA3
RY3
DY1
DA1
DY2
DA2
RA4
RY4
DY3
DA3
RA5
RY5
VDD
1
RA1 2
RA2 3
RA3 4
DY1 5
DY2 6
RA4 7
DY3 8
RA5 9
V S S 10
20 V C C
19 R Y 1
18 R Y 2
17 R Y 3
16 D A 1
15 D A 2
14 R Y 4
13 D A 3
12 R Y 5
11 G N D
H T6571
2 0 S O P -A
Absolute Maximum Ratings
Supply Voltage (VSS VDD).......................... -15V~15V
Input Voltage Driver .......................................... 0V~7V
Output Voltage Driver .................................. -15V~15V
Supply Voltage (GND VCC) ....................... -0.3V~5.5V
Receiver ...................................................... -15V~15V
Receiver ............................................................ 0V~7V
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
Rev. 1.20
1
August 20, 2002
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