参数资料
型号: LTC1544CG
厂商: LINEAR TECHNOLOGY CORP
元件分类: 通用总线功能
英文描述: Software-Selectable Multiprotocol Transceiver
中文描述: QUAD LINE TRANSCEIVER, PDSO28
封装: 0.209 INCH, PLASTIC, SSOP-28
文件页数: 5/20页
文件大小: 277K
代理商: LTC1544CG
5
LTC1544
V
CC
(Pin 1):
Positive Supply for the Transceivers. 4.75V
V
CC
5.25V. Connect a 1
μ
F capacitor to ground.
V
DD
(Pin 2):
Positive Supply Voltage for V.28. Connect to
V
DD
Pin 3 on LTC1543 or 8V supply. Connect a 1
μ
F
capacitor to ground.
D1 (Pin 3):
TTL Level Driver 1 Input.
D2 (Pin 4):
TTL Level Driver 2 Input.
D3 (Pin 5):
TTL Level Driver 3 Input.
R1 (Pin 6):
CMOS Level Receiver 1 Output.
R2 (Pin 7):
CMOS Level Receiver 2 Output.
R3 (Pin 8):
CMOS Level Receiver 3 Output.
D4 (Pin 9):
TTL Level Driver 4 Input.
R4 (Pin 10):
CMOS Level Receiver 4 Output.
M0 (Pin 11):
TTL Level Mode Select Input 0 with Pull-Up
to V
CC
.
M1 (Pin 12):
TTL Level Mode Select Input 1 with Pull-Up
to V
CC
.
M2 (Pin 13):
TTL Level Mode Select Input 2 with Pull-Up
to V
CC
.
DCE/DTE (Pin 14):
TTL Level Mode Select Input with
Pull-Up to V
CC
.
INVERT (Pin 15):
TTL Level Mode Select Input with Pull-
Up to V
CC
.
D4/R4 A (Pin 16):
Receiver 4 Inverting Input and Driver 4
Output.
R3 B (Pin 17):
Receiver 3 Noninverting Input.
R3 A (Pin 18):
Receiver 3 Inverting Input.
R2 B (Pin 19):
Receiver 2 Noninverting Input.
R2 A (Pin 20):
Receiver 2 Inverting Input.
D3/R1 B (Pin 21):
Receiver 1 Noninverting Input and
Driver 3 Noninverting Output.
D3/R1 A (Pin 22):
Receiver 1 Inverting Input and Driver 3
Inverting Output.
D2 B (Pin 23):
Driver 2 Noninverting Output.
D2 A (Pin 24):
Driver 2 Inverting Output.
D1 B (Pin 25):
Driver 1 Noninverting Output.
D1 A (Pin 26):
Driver 1 Inverting Output.
GND (Pin 27):
Ground.
V
EE
(Pin 28):
Negative Supply Voltage. Connect to V
EE
Pin
26 on LTC1543 or to –8V supply. Connect a 1
μ
F capacitor
to ground.
Figure 1. V.11 Driver Test Circuit
A
B
A
R
B
1544 F02
R
L
100
C
L
100pF
C
100pF
15pF
A
B
1544 F01
V
OD
V
OC
R
L
50
R
L
50
Figure 2. V.11 Driver/Receiver AC Test Circuit
PIU
TEST CIRCUITS
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