ISL4221E Datasheet, PDF (2/13 Pages) Intersil Corporation – QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitters/Receivers

ISL4221E, ISL4223E
Ordering Information
PART NO. TEMP. RANGE (°C) PACKAGE PKG. DWG. #
ISL4221EIR
-40 to 85
16 Ld QFN L16.5x5
ISL4221EIR-T
-40 to 85
16 Ld QFN L16.5x5
Tape & Reel
ISL4221EIRZ-T
(Note)
-40 to 85
16 Ld QFN L16.5x5
Tape & Reel
(Pb-free)
ISL4223EIR
-40 to 85
20 Ld QFN L20.5x5
ISL4223EIRZ
(Note)
-40 to 85
20 Ld QFN L20.5x5
(Pb-free)
Pinouts
ISL4221E (QFN)
TOP VIEW
Ordering Information (Continued)
PART NO. TEMP. RANGE (°C) PACKAGE PKG. DWG. #
ISL4223EIR-T
-40 to 85
20 Ld QFN L20.5x5
Tape & Reel
ISL4223EIRZ-T
(Note)
-40 to 85
20 Ld QFN L20.5x5
Tape & Reel
(Pb-free)
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is 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-020B.
ISL4223E (QFN)
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