MAX3097 MAXIM [Maxim Integrated Products], MAX3097 Datasheet
MAX3097
Manufacturer Part Number
MAX3097
Description
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.MAX3097.pdf
(16 pages)
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The MAX3097E/MAX3098E feature three high-speed RS-
485/RS-422 receivers with fault-detection circuitry and
fault-status outputs. The receivers’ inputs have fault
thresholds that detect when the part is not in a valid state.
The MAX3097E/MAX3098E indicate when a receiver
input is in an open-circuit condition, short-circuit condi-
tion, or outside the common-mode range. They also
generate a fault indication when the differential input
voltage goes below a preset threshold. See Ordering
Information or the Electrical Characteristics for thresh-
old values.
The fault circuitry includes a capacitor-programmable
delay to ensure that there are no erroneous fault condi-
tions even at slow edge rates. Each receiver is capable
of accepting data at rates up to 32Mbps.
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
19-1727; Rev 0; 7/00
Triple RS-422/RS-485 Receivers with Fault Detection
________________________Applications
RS-485/RS-422 Receivers for Motor-Shaft
Encoders
High-Speed, Triple RS-485/RS-422 Receiver with
Extended Electrostatic Discharge (ESD)
Triple RS-485/RS-422 Receiver with Input Fault
Indication
Telecommunications
Embedded Systems
MOTOR
Typical Application Circuit
ENCODED SIGNALS
MOTOR DRIVER
A, A, B, B, Z, Z
________________________________________________________________ Maxim Integrated Products
General Description
RECEIVER
OUTPUTS
MAX3097E
MAX3098E
12-BIT D/A
MAX547
±15kV ESD-Protected, 32Mbps, 3V/5V,
DSP
8
ALARM
OUTPUTS
MOTOR
CONTROLLER
o Detects the Following RS-485 Faults:
o ESD Protection
o Single +3V to +5.5V Operation
o -10V to +13.2V Extended Common-Mode Range
o Capacitor-Programmable Delay of Fault Indication
o Independent and Universal Fault Outputs
o 32Mbps Data Rate
o 16-Pin QSOP is 40% Smaller than Industry-
Ordering Information continued at end of data sheet.
MAX3097ECEE
MAX3097ECSE
Allows Error-Free Operation at Slow Data Rates
Standard 26LS31/32 Solutions
TOP VIEW
Open-Circuit Condition
Short-Circuit Condition
Low Differential Voltage Signal
Common-Mode Range Violation
±15kV—Human Body Model
±15kV—IEC 1000-4-2, Air-Gap Discharge
Method
±8kV—IEC 1000-4-2, Contact Discharge Method
PART
DELAY
GND
A
A
B
B
Z
Z
1
2
3
4
5
6
7
8
TEMP. RANGE
QSOP/SO/DIP
Ordering Information
0°C to +70°C
0°C to +70°C
MAX3097E
MAX3098E
Pin Configuration
16
15
14
13
12
11
10
9
V
ALARMA
OUTA
ALARMB
OUTB
ALARMZ
OUTZ
ALARMD
PIN-
PACKAGE
16 QSOP
16 SO
CC
Features
1
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