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ICL3221CA View Datasheet(PDF) - Intersil

Part NameICL3221CA Intersil
Intersil Intersil
Description1 Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers
ICL3221CA Datasheet PDF : 28 Pages
First Prev 11 12 13 14 15 16 17 18 19 20 Next Last
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Typical Performance Curves VCC = 3.3V, TA = 25°C (Continued)
45
ICL324X
40
250kbps
35
30
120kbps
25
20
20kbps
15
10
5
0
0
1000
2000
3000
4000
LOAD CAPACITANCE (pF)
5000
FIGURE 17. SUPPLY CURRENT vs LOAD CAPACITANCE
WHEN TRANSMITTING DATA
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND
TRANSISTOR COUNT:
ICL3221: 286
ICL3222: 338
ICL3223: 357
ICL3232: 296
ICL324X: 464
PROCESS:
Si Gate CMOS
3.5
3.0
ICL3221 - ICL3232
2.5
NO LOAD
ALL OUTPUTS STATIC
2.0
1.5
1.0
0.5
ICL324X
0
2.5
3.0
ICL324X
3.5
4.0
4.5
5.0
5.5
6.0
SUPPLY VOLTAGE (V)
FIGURE 18. SUPPLY CURRENT vs SUPPLY VOLTAGE
16
FN4805.21
March 1, 2006
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One Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers


The Intersil ICL32XX devices are 3.0V to 5.5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC= 3.0V. Targeted applications are PDAs, Palmtops, and notebook and laptop computers where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with manual and automatic powerdown functions (except for the ICL3232), reduce the standby supply current to a 1µA trickle. Small footprint packaging, and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 250kbps are guaranteed at worst case load onditions. This family is fully compatible with3.3V only systems, mixed 3.3V and 5.0V systems, and 5.0V only systems.

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