ICL3217ECB Intersil, ICL3217ECB Datasheet - Page 8

• Manufacturer Part Number: ICL3217ECB
• Description: IC TXRX RS-232 3-5.5V ESD 24SOIC
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ICL3217ECB

• Number Of Drivers/receivers: 5/3
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Operation down to 2.7V
ICL32X7E transmitter outputs meet RS-562 levels (
with V
operability with RS-232 devices.
High Data Rates
The ICL32XX maintain the RS-232
output voltages even at high data rates. Figure 7 details a
transmitter loopback test circuit, and Figure 8 illustrates the
loopback test result at 120kbps. For this test, all transmitters
were simultaneously driving RS-232 loads in parallel with
1000pF, at 120kbps. Figure 9 shows the loopback results for
a single transmitter driving 1000pF and an RS-232 load at
250kbps. The static transmitters were also loaded with an
RS-232 receiver.
5V/DIV.
R1
T1
T1
OUT
OUT
FIGURE 7. TRANSMITTER LOOPBACK TEST CIRCUIT
IN
CC
V
C
C
CC
1
2
V
C1 - C4 = 0.1µF
as low as 2.7V. RS-562 levels typically ensure inter
+
+
CC
FIGURE 8. LOOPBACK TEST AT 120kbps
= +3.3V
0.1µF
C1+
C1-
C2+
C2-
T
R
IN
OUT
+
ICL32X7E
V
CC
8
5µs/DIV.
T
±
OUT
5V minimum transmitter
R
V+
5k
V-
IN
ICL3207E, ICL3217E
±
+
+
C
C
1000pF
3.7V)
3
4
Interconnection with 3V and 5V Logic
The ICL32X7E directly interface with 5V CMOS and TTL
logic families. Nevertheless, with the ICL32X7E at 3.3V, and
the logic supply at 5V, AC, HC, and CD4000 outputs can
drive ICL32X7E inputs, but ICL32X7E outputs do not reach
the minimum V
more information.
±15kV ESD Protection
All pins on ICL32XX devices include ESD protection
structures, but the ICL32X7E incorporate advanced
structures which allow the RS-232 pins (transmitter outputs
and receiver inputs) to survive ESD events up to ±15kV. The
RS-232 pins are particularly vulnerable to ESD damage
because they typically connect to an exposed port on the
exterior of the finished product. Simply touching the port
pins, or connecting a cable, can cause an ESD event that
might destroy unprotected ICs. These new ESD structures
protect the device whether or not it is powered up, protect
without allowing any latchup mechanism to activate, and
don’t interfere with RS-232 signals as large as ±25V.
POWER-SUPPLY
5V/DIV.
R1
T1
TABLE 4. LOGIC FAMILY COMPATIBILITY WITH VARIOUS
T1
OUT
OUT
VOLTAGE
SYSTEM
IN
3.3
(V)
5
5
V
C1 - C4 = 0.1mF
FIGURE 9. LOOPBACK TEST AT 250kbps
CC
SUPPLY VOLTAGES
= +3.3V
IH
for these logic families. See Table 4 for
VOLTAGE
SUPPLY
V
(V)
3.3
3.3
CC
5
2µs/DIV.
Compatible with all CMOS
families.
Compatible with all TTL and
CMOS logic families.
Compatible with ACT and HCT
CMOS, and with TTL. ICL32X7
outputs are incompatible with AC,
HC, and CD4000 CMOS inputs.
COMPATIBILITY
E