LT1796 Ver la hoja de datos (PDF) - Linear Technology
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LT1796 Datasheet PDF : 8 Pages
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LT1796
DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 4.75V to 5.25V, VRS = 0V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
VTH
Differential Input Threshold Voltage
VRS = 0V, – 7V < VCM < 12V
for Receiver
VRS = 5V, – 7V < VCM < 12V
q 0.5
q 0.5
0.9
V
0.9
V
∆VTH
Receiver Input Hysteresis
– 7V < VCM < 12V
70
mV
VOH
Receiver Output High Voltage
VCC = 4.75V, IO = – 400µA, VID = 500mV
q
3
3.6
V
VOL
Receiver Output Low Voltage
VCC = 4.75V, IO = 1.6mA, VID = 900mV
q
0.15
0.4
V
ISCR
Receiver Short-Circuit Current
VREF
Reference Output Voltage
0V < VO < VCC , VCC = 5.25V
– 100µA < IREF < 100µA
q
7
20
85
mA
q 2.25 2.5
2.7
V
VREFSC
Reference Output Short-Circuit Current
0 < VREF < VCC
q – 20
20
mA
VRSSB
RS Pin Standby Threshold
VCC = 5V
q 2.5
2.8
4
V
IRS
RS Input Current
ICC
Supply Current Dominant
Recessive
Standby
VRS = 5V, VCC = 5V
VRS = 0V, VCC = 5V
RS = 47k, VCC = 5V
q
0.1
10
µA
q – 270 – 200 – 140
µA
q – 90 – 60 – 40
µA
No Load, VRS = 0V, VTXD = 0V, VCC = 5.25V q
RL = 60Ω, VRS = 0V, VTXD = 5V, VCC = 5.25V q
RL = 60Ω, VRS = 5V, VCC = 5.25V
q
4.3
7
mA
3.8
7
mA
0.8
1.5
mA
U
SWITCHI G CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range. VRS = 0V unless otherwise noted. (Note 2)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
tBIT
FMAX
tTXDON
Minimum Bit Time
Maximum Data Rate
Driver Input to Bus Active
tTXDOFF
Driver Input to Bus Inactive
tLBON
tLBOFF
tRXDOFF
tRXDON
tRXDOFFSB
tRXDONSB
tWAKE
SR +
Loopback Delay Active
Loopback Delay Inactive
Receiver Delay Off
Receiver Delay On
Receiver Delay Off, Standby
Receiver Delay On, Standby
Wake-Up Delay from Standby
Positive Slew Rate
SR –
Negative Slew Rate
(Note 3)
q
8
µs
(Note 3)
q 125
kbps
Figures 1, 2
Figures 1, 2
Figures 1, 3
RS = 0k
q
RS = 47k
q
RS = 0k
q
RS = 47k
q
q
300 500
ns
350 1000
ns
500 1000
ns
600 1500
ns
0.6
1.5
µs
Figures 1, 3
q
1.5
3
µs
Figures 1, 4
q
400 600
ns
Figures 1, 4
q
300 600
ns
VRS = 4V, Figures 1, 4
VRS = 4V, Figures 1, 4
Figures 1, 5
q
1.5
4
µs
q
1
4
µs
q
1
15
µs
RS = 0k
RS = 47k
RS = 0k
RS = 47k
q
5
12
65
V/µs
q
2
7
30
V/µs
q
5
36
65
V/µs
q
2
5
15
V/µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Unless otherwise specified, testing done at VCC = 5V, TA = 25°C.
Note 3: Bit time and data rate specifications are guaranteed by driver and
receiver delay time measurements.
1796f
3
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