Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

ICL3244IA Datasheet(PDF) 8 Page - Intersil Corporation

Part # ICL3244IA
Description  1 Microamp, 3V to 5.5V, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ICL3244IA Datasheet(HTML) 8 Page - Intersil Corporation

Back Button ICL3244IA Datasheet HTML 4Page - Intersil Corporation ICL3244IA Datasheet HTML 5Page - Intersil Corporation ICL3244IA Datasheet HTML 6Page - Intersil Corporation ICL3244IA Datasheet HTML 7Page - Intersil Corporation ICL3244IA Datasheet HTML 8Page - Intersil Corporation ICL3244IA Datasheet HTML 9Page - Intersil Corporation ICL3244IA Datasheet HTML 10Page - Intersil Corporation ICL3244IA Datasheet HTML 11Page - Intersil Corporation ICL3244IA Datasheet HTML 12Page - Intersil Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 20 page
background image
8
(not in powerdown mode). This is considerably less than the
5mA to 11mA current required of 5V RS-232 devices. The
already low current requirement drops significantly when the
device enters powerdown mode. In powerdown, supply
current drops to 1
µA, because the on-chip charge pump
turns off (V+ collapses to VCC, V- collapses to GND), and
the transmitter outputs tristate. Inverting receiver outputs
may or may not disable in powerdown; refer to Table 2 for
details. This micro-power mode makes these devices ideal
for battery powered and portable applications.
Software Controlled (Manual) Powerdown
These devices allow the user to force the IC into the low
power, standby state, and utilize a two pin approach where
the FORCEON and FORCEOFF inputs determine the IC’s
mode. For always enabled operation, FORCEON and
FORCEOFF are both strapped high. To switch between
active and powerdown modes, under logic or software
control, only the FORCEOFF input need be driven. The
FORCEON state isn’t critical, as FORCEOFF dominates
over FORCEON. Nevertheless, if strictly manual control over
powerdown is desired, the user must strap FORCEON high
to disable the enhanced automatic powerdown circuitry.
ICL3238 and ICL3244 inverting (standard) receiver outputs
also disable when the device is in powerdown, thereby
eliminating the possible current path through a shutdown
peripheral’s input protection diode (see Figures 2 and 3).
Connecting FORCEOFF and FORCEON together disables
the enhanced automatic powerdown feature, enabling them
to function as a manual SHUTDOWN input (see Figure 4).
With any of the above control schemes, the time required to
exit powerdown, and resume transmission is only 100
µs.
TABLE 2. POWERDOWN LOGIC TRUTH TABLE
RCVR OR
XMTR
EDGE
WITHIN 30
SEC?
FORCEOFF
INPUT
FORCEON
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
(NOTE 6)
ROUTB
OUTPUTS
RS-232
LEVEL
PRESENT
AT
RECEIVER
INPUT?
INVALID
OUTPUT
MODE OF OPERATION
ICL3224, ICL3226
NO
H
H
Active
Active
N.A.
NO
L
Normal Operation (Enhanced
Auto Powerdown Disabled)
NO
H
H
Active
Active
N.A.
YES
H
YES
H
L
Active
Active
N.A.
NO
L
Normal Operation (Enhanced
Auto Powerdown Enabled)
YES
H
L
Active
Active
N.A.
YES
H
NO
H
L
High-Z
Active
N.A.
NO
L
Powerdown Due to Enhanced
Auto Powerdown Logic
NO
H
L
High-Z
Active
N.A.
YES
H
X
L
X
High-Z
Active
N.A.
NO
L
Manual Powerdown
X
L
X
High-Z
Active
N.A.
YES
H
ICL322X - INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWERDOWN)
X
NOTE 7
NOTE 7
Active
Active
N.A.
YES
H
Normal Operation
X
NOTE 7
NOTE 7
High-Z
Active
N.A.
NO
L
Forced Auto Powerdown
ICL3238, ICL3244
NO
H
H
Active
Active
Active
NO
L
Normal Operation (Enhanced
Auto Powerdown Disabled)
NO
H
H
Active
Active
Active
YES
H
YES
H
L
Active
Active
Active
NO
L
Normal Operation (Enhanced
Auto Powerdown Enabled)
YES
H
L
Active
Active
Active
YES
H
NO
H
L
High-Z
Active
Active
NO
L
Powerdown Due to Enhanced
Auto Powerdown Logic
NO
H
L
High-Z
Active
Active
YES
H
X
L
X
High-Z
High-Z
Active
NO
L
Manual Powerdown
X
L
X
High-Z
High-Z
Active
YES
H
ICL3238, ICL3244 - INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWERDOWN)
X
NOTE 7
NOTE 7
Active
Active
Active
YES
H
Normal Operation
X
NOTE 7
NOTE 7
High-Z
High-Z
Active
NO
L
Forced Auto Powerdown
NOTES:
6. Applies only to the ICL3238 and ICL3244.
7. Input is connected to INVALID Output.
ICL3224, ICL3226, ICL3238, ICL3244


Similar Part No. - ICL3244IA

ManufacturerPart #DatasheetDescription
logo
Intersil Corporation
ICL3244 INTERSIL-ICL3244 Datasheet
141Kb / 13P
   1Microamp, 3V to 5.5V, 250kbps, RS-232 Transceiver with Enhanced Automatic Powerdown
ICL3244 INTERSIL-ICL3244 Datasheet
400Kb / 18P
   1 Microamp, 3V to 5.5V, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
ICL3244 INTERSIL-ICL3244 Datasheet
408Kb / 18P
   1 Microamp, 3V to 5.5V, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
ICL3244CA INTERSIL-ICL3244CA Datasheet
141Kb / 13P
   1Microamp, 3V to 5.5V, 250kbps, RS-232 Transceiver with Enhanced Automatic Powerdown
ICL3244CB INTERSIL-ICL3244CB Datasheet
141Kb / 13P
   1Microamp, 3V to 5.5V, 250kbps, RS-232 Transceiver with Enhanced Automatic Powerdown
More results

Similar Description - ICL3244IA

ManufacturerPart #DatasheetDescription
logo
Intersil Corporation
ICL3224 INTERSIL-ICL3224_06 Datasheet
400Kb / 18P
   1 Microamp, 3V to 5.5V, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
ICL3226CA INTERSIL-ICL3226CA Datasheet
408Kb / 18P
   1 Microamp, 3V to 5.5V, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
logo
Renesas Technology Corp
ICL3225 RENESAS-ICL3225 Datasheet
830Kb / 19P
   1 Microamp, 3V to 5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown
logo
Intersil Corporation
ICL3225 INTERSIL-ICL3225_06 Datasheet
380Kb / 18P
   1 Microamp, 3V to 5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown
ICL3227 INTERSIL-ICL3227 Datasheet
535Kb / 20P
   1 Microamp, 3V to 5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown
ICL3225 INTERSIL-ICL3225 Datasheet
461Kb / 18P
   1 Microamp, 3V to 5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown
ICL3224E INTERSIL-ICL3224E Datasheet
458Kb / 19P
   15kV ESD Protected, 3V to 5.5V, 1Microamp, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
logo
Renesas Technology Corp
ICL3224E RENESAS-ICL3224E Datasheet
852Kb / 20P
   /-15kV ESD Protected, 3V to 5.5V, 1Microamp, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
logo
Intersil Corporation
ICL3244 INTERSIL-ICL3244 Datasheet
141Kb / 13P
   1Microamp, 3V to 5.5V, 250kbps, RS-232 Transceiver with Enhanced Automatic Powerdown
ICL3224E INTERSIL-ICL3224E_06 Datasheet
388Kb / 20P
   /-15kV ESD Protected, 3V to 5.5V, 1Microamp, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com