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TL16C451 Datasheet Preview

TL16C451 Datasheet

ACE

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TL16C451, TL16C452
ASYNCHRONOUS COMMUNICATIONS ELEMENTS
D Integrates Most Communications Card
Functions From the IBM PC/AT or
Compatibles With Single- or Dual-Channel
Serial Ports
D TL16C451 Consists of One TL16C450 Plus
Centronix Printer Interface
D TL16C452 Consists of Two TL16C450s Plus
a Centronix-Type Printer Interface
SLLS053C – MAY 1989 – REVISED AUGUST 1999
D Fully Programmable Serial Interface
Characteristics:
– 5-, 6-, 7-, or 8-Bit Characters
– Even-, Odd-, or No-Parity Bit Generation
and Detection
– 1-, 1 1/2-, or 2 Stop-Bit Generation
– Programmable Baud Rate
(dc to 256 kbit/s)
D Fully Double Buffered for Reliable
Asynchronous Operation
description
The TL16C451 and TL16C452 provide single- and dual-channel (respectively) serial interfaces along with a
single Centronix-type parallel-port interface. The serial interfaces provide a serial-to-parallel conversion for data
received from a peripheral device or modem and a parallel-to-serial conversion for data transmitted by a CPU.
The parallel interface provides a bidirectional parallel data port that fully conforms to the requirements for a
Centronix-type printer interface. A CPU can read the status of the asynchronous communications element
(ACE) interfaces at any point in the operation. The status includes the state of the modem signals (CTS, DSR,
RLSD, and RI) and any changes to these signals that have occurred since the last time they were read, the state
of the transmitter and receiver including errors detected on received data, and printer status. The TL16C451
and TL16C452 provide control for modem signals (RTS and DTR), interrupt enables, baud rate programming,
and parallel-port control signals.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
IBM PC/AT is a trademark of International Business Machines Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1999, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




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TL16C451 Datasheet Preview

TL16C451 Datasheet

ACE

No Preview Available !

TL16C451, TL16C452
ASYNCHRONOUS COMMUNICATIONS ELEMENTS
SLLS053C – MAY 1989 – REVISED AUGUST 1999
TL16C451 . . . FN PACKAGE
(TOP VIEW)
NC
NC
NC
GND
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
GND
VCC
RTS0
DTR0
SOUT0
9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61
10
60
11
59
12
58
13
57
14
56
15
55
16
54
17
53
18
52
19
51
20
50
21
49
22
48
23
47
24
46
25
45
26
44
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
NC
INT2
SLIN
INIT
AFD
STB
GND
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
INT0
BDO
NC – No internal connection
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TL16C451
Description ACE
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