MAX3053ASA+ Maxim Integrated, MAX3053ASA+ Datasheet - Page 10

• Manufacturer Part Number: MAX3053ASA+
• Description: Network Controller & Processor ICs
• Manufacturer: Maxim Integrated

Specifications of MAX3053ASA+

• Product: Controller Area Network (CAN)
• Number Of Transceivers: 1
• Data Rate: 2 Mbps
• Supply Current (max): 72 mA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 5 V
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V

Additionally, a current-limiting circuit protects the trans-
mitter output stage against a short circuit to positive
and negative battery voltage. Although the power dissi-
pation increases during this fault condition, this feature
prevents destruction of the transmitter output stage.
In slope control mode, the CANH, CANL outputs are
slew-rate limited, minimizing EMI and reducing reflec-
tions caused by improperly terminated cables. In gen-
eral, a transmitter’s rise time relates directly to the
±80V Fault-Protected, 2Mbps,
Low Supply Current CAN Transceiver
Figure 7. Output Bus High-Speed Mode at 2Mbps
10
Figure 5. Output Bus in Slope Control Mode at 62.5kbps
______________________________________________________________________________________
1MHz
R
RS
31.5kHz
R
RS
= 0Ω
= 180kΩ
Applications Information
Reduced EMI and Reflections
100ns
4.00µs
CANH–CANL
5V/div
FFT
200mV/div
CANH–CANL
5V/div
FFT
200mV/div
length of an unterminated stub, which can be driven
with only minor waveform reflections. The following
equation expresses this relationship conservatively:
where t
6, and 7 for typical waveforms at various data rates.
The MAX3053 requires no special layout considerations
beyond common practices. Bypass V
1µF ceramic capacitor mounted close to the IC with
short lead lengths and wide trace widths.
Figure 6. Output Bus in Slope Control Mode at 500kbps
TRANSISTOR COUNT: 1214
PROCESS: BiCMOS
RISE
250kHz
R
RS
is the transmitter’s rise time. See Figures 5,
TOP VIEW
Length = t
= 24kΩ
GND
RXD
TXD
V
CC
1
2
3
4
RISE
400ns
MAX3053
Pin Configuration
/ (10 x 1.5ns/ft)
SO
Chip Information
7
5
8
6
CC
RS
CANH
CANL
SHDN
CANH–CANL
5V/div
FFT
200mV/div
to GND with a