MAX13234EETP-T Maxim Integrated, MAX13234EETP-T Datasheet - Page 12

• Manufacturer Part Number: MAX13234EETP-T
• Description: RS-232 Interface IC
• Manufacturer: Maxim Integrated
• Series: MAX13234E, MAX13235E, MAX13236E, MAX13237Er

Specifications of MAX13234EETP-T

• Data Rate: 250 Kbps
• Operating Supply Voltage: 3 V to 5.5 V
• Supply Current: 1 mA
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Function: Transceiver
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 2
• Number Of I/os: 8
• Number Of Receivers: 2
• Propagation Delay Time Ns: 0.15 us
• Shutdown: Yes

3Mbps RS-232 Transceivers with
Low-Voltage Interface
ESD-protection structures are incorporated on all pins
to protect against electrostatic discharges encountered
during handling and assembly. The driver outputs and
receiver inputs of the MAX13234E–MAX13237E have
extra protection against static electricity. Maxim’s engi-
neers have developed state-of-the-art structures to pro-
tect these pins against ESD of ±15kV without damage.
The ESD structures withstand high ESD in all states:
normal operation, shutdown, and powered down. After
Figure 8a. Human Body ESD Test Model
Figure 8b. Human Body Current Waveform
12
AMPERES
VOLTAGE
SOURCE
HIGH-
______________________________________________________________________________________
DC
I
P
36.8%
100%
90%
10%
CHARGE-CURRENT
0
LIMIT RESISTOR
0
1MΩ
t
RL
R
100pF
C
C s
STORAGE
CAPACITOR
CURRENT WAVEFORM
TIME
RESISTANCE
DISCHARGE
1500Ω
±15kV ESD Protection
R
D
t
DL
I r
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
DEVICE
UNDER
TEST
an ESD event, Maxim’s E versions keep working without
latchup. ESD protection can be tested in various ways;
the transmitter outputs and receiver inputs of this prod-
uct family are characterized for protection to the follow-
ing limits:
1) ±15V Using the Human Body Model
2) ±15kV Using IEC 61000-4-2 Air-Gap Method
3) ±8kV Using IEC 61000-4-2 Contact-Discharge
Figure 9a. IEC61000-4-2 ESD Test Model
Figure 9b. IEC61000-4-2 ESD Generator Current Waveform
VOLTAGE
Method
SOURCE
HIGH-
t r = 0.7ns to 1ns
DC
CHARGE-CURRENT
LIMIT RESISTOR
100%
50MΩ to 100MΩ
90%
10%
I
R
150pF
C
C s
30ns
STORAGE
CAPACITOR
RESISTANCE
DISCHARGE
330Ω
R
D
60ns
DEVICE
UNDER
TEST
t