5962-0620705Q3A Datasheet, PDF (4/9 Pages) Intersil Corporation – ±15kV ESD Protected, +5.0V 1Microamp, 250kbps, RS-232 Transmitters/Receivers

5962-0620705Q3A, 5962-0620706Q3A, 5962-0620707Q2A, 5962-0620708Q2A
TABLE 1. POWER-DOWN LOGIC TRUTH TABLE (Continued)
RCVR OR
XMTR
EDGE
WITHIN 30
SEC?
FORCEOFF FORCEON TRANSMITTER
INPUT
INPUT
OUTPUTS
RECEIVER
OUTPUTS
R_OUTB
OUTPUT
RS-232
LEVEL
PRESENT
AT
RECEIVER
INPUT?
INVALID
OUTPUT
MODE OF OPERATION
INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWER-DOWN)
X
Note 2
Note 2
Active
Active
Active
Yes
H
Normal Operation
X
Note 2
Note 2
High-Z
High-Z
Active
No
L
Forced Auto Power-down
NOTE:
2. Input is connected to INVALID Output.
TABLE 2. POWER-DOWN AND ENABLE LOGIC TRUTH TABLE
RS-232
SIGNAL
PRESENT
AT
RECEIVER
INPUT?
(NOTE 3)
FORCEOFF FORCEON EN TRANSMITTER RECEIVER R_OUTB
INPUT
INPUT INPUT OUTPUTS OUTPUTS OUTPUTS
INVALID
OUTPUT
MODE OF OPERATION
ICL3221E
No
H
H
L
Active
Active
N.A.
L
Normal Operation
(Auto Power-down Disabled)
No
H
H
H
Active
High-Z
N.A.
L
Yes
H
Yes
H
L
L
Active
Active
N.A.
H
Normal Operation
(Auto Power-down Enabled)
L
H
Active
High-Z
N.A.
H
No
H
L
L
High-Z
Active
N.A.
L
Power-down Due to Auto Power-down
Logic
No
H
L
H
High-Z
High-Z
N.A.
L
Yes
L
X
L
High-Z
Active
N.A.
H
Manual Power-down
Yes
L
X
H
High-Z
High-Z
N.A.
H
Manual Power-down w/Rcvr. Disabled
No
L
X
L
High-Z
Active
N.A.
L
Manual Power-down
No
L
X
H
High-Z
High-Z
N.A.
L
Manual Power-down w/Rcvr. Disabled
ICL3243E
No
H
H
N.A.
Active
Active
Active
L
Normal Operation
(Auto Power-down Disabled)
Yes
H
L
N.A.
Active
Active
Active
H
Normal Operation
(Auto Power-down Enabled)
No
H
L
N.A.
High-Z
Active
Active
L
Power-down Due to Auto Power-down
Logic
Yes
L
X
N.A.
High-Z
High-Z
Active
H
Manual Power-down
No
L
X
N.A.
High-Z
High-Z
Active
L
Manual Power-down
NOTE:
3. Applies only to the ICL3243E.
4
FN6298.0
May 31, 2006