Datasheet

AD7306
REV. B
–3–
Parameter Typ Max Units Test Conditions/Comments
RS-422 Driver
Propagation Delay Input to Output T
PLH
, T
PHL
35 100 ns R
L
Diff = 100 Ω. C
L1
= C
L2
= 100 pF, Figures 2 & 4
RS-422 O/P to O/P T
SKEW
210nsR
L
Diff = 100 Ω. C
L1
= C
L2
= 100 pF, Figures 2 & 4
Driver Rise/Fall Time T
R
, T
F
15 40 ns R
L
Diff = 100 Ω. C
L1
= C
L2
= 100 pF, Figures 2 & 4
RS-422 Receiver
Propagation Delay Input to Output T
PLH
, T
PHL
70 200 ns C
L
= 15 pF. Figure 5
RS-232/RS-422 Enable
RS-232 Disable to RS-422 Enable T
EN1
70 200 ns Figure 6
RS-422 Disable to RS-232 Enable T
EN2
70 200 ns Figure 6
Transmission Rate (RS-422) 5 MHz
RS-232 Receiver
Propagation Delay Input to Output 1000 ns
Transmission Rate (RS-232) 100 kHz C
L
= 50 pF
20 kHz C
L
= 2.5 nF
TIMING SPECIFICATIONS
(V
CC
= +5 V 6 5%, C1 = C2 = C3 = C4 = 0.1 mF. All specifications T
MIN
to T
MAX
unless otherwise noted.)
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25°C unless otherwise noted)
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
V+ . . . . . . . . . . . . . . . . . . . . . . . . . . .(V
CC
–0.3 V) to +13.2 V
V– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+0.3 V to –13.2 V
Inputs
T1
IN
, T2
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V– to V+
T3
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to V+
R1
IN
A/B, R2
IN
. . . . . . . . . . . . . . . . . . . . . . .–25 V to +25 V
232/
422 SEL . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to V+
Outputs
T1
OUT
, T2
OUT
. . . . . . . . . . . . . . . . . . . . . . .–15 V to +15 V
T3
OUT
(A), (B) . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
R1
OUT
, R2
OUT
. . . . . . . . . . . . . . . . –0.3 V to (V
CC
+ 0.3 V)
Short Circuit Duration
T
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Continuous
Power Dissipation
Small Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 mW
DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 mW
Operating Temperature Range
Commercial (J Version) . . . . . . . . . . . . . . . . . 0°C to +70°C
Industrial (A Version) . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300°C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those listed in the
operational sections of this specification is not implied. Exposure to absolute
maximum ratings for extended periods of time may affect device reliability.
WARNING!
ESD SENSITIVE DEVICE
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7306 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
ORDERING GUIDE
Model Temperature Range Package Description Package Option
AD7306JR 0°C to +70°C 24-Lead SOIC R-24
AD7306JN 0°C to +70°C 24-Pin DIP N-24
AD7306AR –40°C to +85°C 24-Lead SOIC R-24
AD7306AN –40°C to +85°C 24-Pin DIP N-24