ISL4221E_07 Datasheet, PDF (2/13 Pages) Intersil Corporation – QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 150nA, 250kBps, RS-232 Transmitters/Receivers

ISL4221E, ISL4223E
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL4221EIR*
ISL 4221EIR
-40 to +85
16 Ld QFN
L16.5x5
ISL4221EIRZ* (Note)
ISL4221 EIRZ
-40 to +85
16 Ld QFN (Pb-free)
L16.5x5
ISL4223EIR*
ISL 4223EIR
-40 to +85
20 Ld QFN
L20.5x5
ISL4223EIRZ* (Note)
ISL4223 EIRZ
-40 to +85
20 Ld QFN (Pb-free)
L20.5x5
*Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Pinouts
ISL4221E
ISL4223E
(16 LD QFN)
(20 LD QFN)
TOP VIEW
TOP VIEW
V+ 1
C1- 2
C2+ 3
C2- 4
16 15 14 13
56 78
12 GND
11 T1_OUT
10 FORCEON
9 T1_IN
20 19 18 17 16
V+ 1
C1- 2
C2+ 3
C2- 4
15 T1_OUT
14 R1_IN
13 R1_OUT
12 FORCEON
V- 5
11 T1_IN
6 7 8 9 10
Pin Descriptions
PIN
FUNCTION
V_CC
V+
System power supply input (2.7V to 5.5V).
Internally generated positive transmitter supply (+5.5V).
V-
Internally generated negative transmitter supply (-5.5V).
GND Ground connection.
C1+
External capacitor (voltage doubler) is connected to this lead.
C1-
External capacitor (voltage doubler) is connected to this lead.
C2+
External capacitor (voltage inverter) is connected to this lead.
C2-
External capacitor (voltage inverter) is connected to this lead.
T_IN
T_OUT
R_IN
R_OUT
INVALID
TTL/CMOS compatible transmitter Inputs.
±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs.
±15kV ESD Protected, RS-232 compatible receiver inputs.
TTL/CMOS level receiver outputs.
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
EN
Active low receiver enable control.
2
FN6045.2
April 13, 2007