ISL4221EIRZ Intersil, ISL4221EIRZ Datasheet - Page 3

• Manufacturer Part Number: ISL4221EIRZ
• Description: IC TXRX 1TX/1RX 3V RS-232 16-QFN
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ISL4221EIRZ

• Number Of Drivers/receivers: 2/2
• Protocol: RS232
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Package: 16QFN EP
• Data Transmission Topology: Point-to-Point
• Interface Standards: ElA/TIA-232|RS-232|V.24|V.28
• Data Rate: 0.5 Mbps
• Function: Line Transmitter/Receiver
• Number Of Transmitters: 1
• Transmitter Signal Type: Single-Ended
• Transmitter Communication Type: RS-232
• Driving Mode: 3-State
• Typical Single Supply Voltage: 3.3|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Descriptions
Typical Operating Circuits
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
FORCEON
INVALID
TOUT
ROUT
VCC
GND
C1+
C2+
PIN
RIN
C1-
C2-
TIN
EN
PD
V+
V-
System power supply input (2.7V to 5.5V).
Internally generated positive transmitter supply (+5.5V).
Internally generated negative transmitter supply (-5.5V).
Ground connection. This is also the potential of the thermal pad (PD)
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
TTL/CMOS compatible transmitter Inputs.
±15kV ESD Protected
±15kV ESD Protected
TTL/CMOS level receiver outputs.
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
Active high input to override automatic power-down circuitry thereby keeping transmitters active. (FORCEOFF must be high).
Active low receiver enable control.
Exposed Thermal Pad. Connect to GND.
LOGIC LEVELS
TTL/CMOS
3
,
,
RS-232 level (nominally ±5.5V) transmitter outputs.
RS-232 compatible receiver inputs.
+3.3V
0.1µF
0.1µF
R1
R2
ISL3232E, ISL4221E, ISL4223E
C
C
T1
T2
OUT
OUT
1
2
IN
IN
+
+
+
15
10
1
2
3
9
8
7
0.1µF
C1+
C1-
C2+
C2-
ISL3232E
GND
V
R
R
CC
2
1
T
T
14
FUNCTION
13
1
2
5kΩ
5kΩ
V+
V-
12
11
16
4
5
6
+
+
C
0.1µF
C
0.1µF
T1
T2
R1
R2
3
4
OUT
OUT
IN
IN
RS-232
LEVELS
May 13, 2010
FN6045.6