ADM3251E_VE View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADM3251E_VE Datasheet PDF : 16 Pages
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ADM3251E
SPECIFICATIONS
All voltages are relative to their respective ground; all minimum/maximum specifications apply over the entire recommended operating
range; TA = 25°C and VCC = 5.0 V (dc-to-dc converter enabled), unless otherwise noted.
Table 1.
Parameter
DC CHARACTERISTICS
VCC Operating Voltage Range
DC-to-DC Converter Enable Threshold, VCC(ENABLE)1
DC-to-DC
Converter
Disable
Threshold,
V1
CC(DISABLE)
DC-to-DC Converter Enabled
Input Supply Current, ICC(ENABLE)
VISO Output2
LOGIC
Transmitter Input, TIN
Logic Input Current, ITIN
Logic Low Input Threshold, VTINL
Logic High Input Threshold, VTINH
Receiver Output, ROUT
Logic High Output, VROUTH
Logic Low Output, VROUTL
RS-232
Receiver, RIN
EIA-232 Input Voltage Range3
EIA-232 Input Threshold Low
EIA-232 Input Threshold High
EIA-232 Input Hysteresis
EIA-232 Input Resistance
Transmitter, TOUT
Output Voltage Swing (RS-232)
Transmitter Output Resistance
Output Short-Circuit Current (RS-232)
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation Delay
tPHL
tPLH
Transmitter Propagation Delay
Transmitter Skew
Receiver Skew
Transition Region Slew Rate3
AC SPECIFICATIONS
Output Rise/Fall Time, tR/tF (10% to 90%)
Common-Mode Transient Immunity at Logic High Output4
Common-Mode Transient Immunity at Logic Low Output4
ESD PROTECTION (RIN And TOUT PINS)
Min
Typ
Max Unit Test Conditions/Comments
4.5
5.5
V
4.5
V
3.7
V
110
mA
VCC = 5.5 V, no load
145
mA
VCC = 5.5 V, RL = 3 kΩ
5.0
V
IISO = 0 μA
−10
0.7 VCC
+0.01
+10
μA
0.3 VCC V
V
VCC − 0.1 VCC
V
VCC − 0.5 VCC − 0.3
V
0.0
0.1
V
0.3
0.4
V
IROUTH = −20 μA
IROUTH = −4 mA
IROUTH = 20 μA
IROUTH = 4 mA
−30
0.6
2.0
2.1
0.1
3
5
+30
V
V
2.4
V
V
7
kΩ
±5
±5.7
300
±12
V
RL = 3 kΩ to GND
Ω
VISO = 0 V
mA
460
kbps RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF
190
ns
135
ns
650
ns
RL = 3 kΩ, CL = 1000 pF
80
ns
70
ns
5.5
10
30
V/μs +3 V to −3 V or −3 V to +3 V, VCC = +3.3 V,
RL = 3 kΩ, CL = 1000 pF, TA = 25°C
2.3
25
25
±15
±8
ns
kV/μs
kV/μs
kV
kV
CL = 15 pF, CMOS signal levels
VCM = 1 kV, transient magnitude = 800 V
VCM = 1 kV, transient magnitude = 800 V
Human body model air discharge
Human body model contact discharge
1 Enable/disable threshold is the VCC voltage at which the internal dc-to-dc converter is enabled/disabled.
2 To maintain data sheet specifications, do not draw current from VISO.
3 Guaranteed by design.
4 VCM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential
difference between the logic and bus sides. The transient magnitude is the range over which the common mode is slewed. The common-mode voltage slew rates
apply to both rising and falling common-mode voltage edges.
Rev. E | Page 3 of 16
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