MAX3040 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – ±10kV ESD-Protected, Quad 5V RS-485/RS-422 Transmitters

19-2143; Rev 1; 12/01
±10kV ESD-Protected, Quad 5V RS-485/RS-422
Transmitters
General Description
The MAX3040–MAX3045 is a family of 5V quad RS-
485/RS-422 transmitters designed for digital data trans-
mission over twisted-pair balanced lines. All transmitter
outputs are protected to ±10kV using the Human Body
Model. In addition the MAX3040–MAX3045 withstand
±4kV per IEC 1000-4-4 Electrical Fast Transient/Burst
Stressing. The MAX3040/MAX3043 (250kbps) and the
MAX3041/MAX3044 (2.5Mbps) are slew-rate limited
transmitters that minimize EMI and reduce reflections
caused by improperly terminated cables, thus allowing
error-free transmission.
The MAX3040–MAX3045 feature a hot-swap capability*
that eliminates false transitions on the data cable during
power-up or hot insertion. The MAX3042B/MAX3045B
are optimized for data transfer rates up to 20Mbps, the
MAX3041/MAX3044 for data rates up to 2.5Mbps, and
the MAX3040/MAX3043 for data rates up to 250kbps.
The MAX3040–MAX3045 offer optimum performance
when used with the MAX3093E or MAX3095 5V quad
differential line receivers or MAX3094E/MAX3096 3V
quad differential line receivers.
The MAX3040–MAX3045 are ESD-protected pin-compat-
ible, low-power upgrades to the industry-standard
‘SN75174 and ‘DS26LS31C. They are available in space-
saving TSSOP, narrow SO, and wide SO packages.
*Patent pending
Applications
Telecommunications Equipment
Industrial Motor Control
Transmitter for ESD-Sensitive Applications
Hand-Held Equipment
Industrial PLCs
Networking
Selector Guide
Features
o ESD Protection: ±10kV—Human Body Model
o Single +5V Operation
o Guaranteed Device-to-Device Skew
(MAX3040/MAX3041/MAX3043/MAX3044)
o Pin-Compatible with ‘SN75174, ‘26LS31C and
LTC487
o Hot-Swappable for Telecom Applications
o Up to 20Mbps Data Rate (MAX3042B/MAX3045B)
o Slew-Rate Limited (Data Rates at 2.5Mbps and
250kbps)
o 2nA Low-Power Shutdown Mode
o 1mA Operating Supply Current
o ±4kV EFT Fast Transient Burst Immunity per IEC
1000-4-4
o Level 2 Surge Immunity per IEC 1000-4-5,
Unshielded Cable Model
o Ultra-Small 16-Pin TSSOP, 16-Pin Narrow SO, and
Wide 16-Pin SO
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
DATA
RATE
MAX3040CUE 0°C to +70°C
MAX3040CSE 0°C to +70°C
MAX3040CWE 0°C to +70°C
MAX3040EUE -40°C to +85°C
MAX3040ESE -40°C to +85°C
MAX3040EWE -40°C to +85°C
16 TSSOP
16 Narrow SO
16 Wide SO
16 TSSOP
16 Narrow SO
16 Wide SO
250kbps
250kbps
250kbps
250kbps
250kbps
250kbps
Ordering Information continued at end of data sheet.
Pin Configurations
PART
MAX3040
MAX3041
MAX3042B
MAX3043
MAX3044
MAX3045B
DATA RATE
(bps)
250k
2.5M
20M
250k
2.5M
20M
INDUSTRY STANDARD
PINOUT
75174, 34C87, LTC487
75174, 34C87, LTC487
75174, 34C87, LTC487
26LS31
26LS31
26LS31
TOP VIEW
T1IN 1
Y1 2
Z1 3
EN12 4
Z2 5
Y2 6
T2IN 7
GND 8
MAX3040
MAX3041
MAX3042B
16 V_CC
15 T4IN
14 Y4
13 Z4
12 EN34
11 Z3
10 Y3
9 T3IN
16 TSSOP/SO
Pin Configurations continued at end of data sheet.
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