LTC2858IMS-1(RevB) 查看數據表（PDF） - Linear Technology
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LTC2858IMS-1 Datasheet PDF : 16 Pages
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LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted. (Note 2)
SYMBOL
Driver
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
|VOD|
Differential Driver Output Voltage
R = ∞, IO = 0mA, VCC = 4.5V (Figure 1) ●
VCC
V
R = 27Ω (RS485), VCC = 4.5V (Figure 1) ● 1.5
VCC
V
R = 50Ω (RS422), VCC = 4.5V (Figure 1) ●
2
VCC
V
Δ|VOD|
Change in Magnitude of Driver Differential
R = 27Ω or R = 50Ω (Figure 1)
●
Output Voltage for Complementary Output
States
0.2
V
VOC
Driver Common Mode Output Voltage
R = 27Ω or R = 50Ω (Figure 1)
●
3
V
Δ|VOC|
Change in Magnitude of Driver Common Mode R = 27Ω or R = 50Ω (Figure 1)
●
Output Voltage for Complementary Output
States
0.2
V
IOZD
Driver Three-State (High Impedance) Output DE = 0V, VO = –7V, 12V, LTC2858-1,
●
Current on Y and Z
LTC2858-2
±10
µA
IOSD
Maximum Driver Short-Circuit Current
–7V ≤ (Y or Z) ≤ 12V (Figure 2)
●
±120 ±250
mA
Receiver
IIN
RIN
VTH
ΔVTH
VOH
VOL
IOZR
Logic
Receiver Input Current (A, B)
DE = 0V, VCC = 0V or 5V, VIN = 12V
●
(Figure 3)
125
µA
DE = 0V, VCC = 0V or 5V, VIN = –7V
● –100
µA
(Figure 3)
Receiver Input Resistance
RE = 5V or 0V, DE = 0V, VIN = –7V, –3V, ● 96
125
kΩ
3V, 7V, 12V (Figure 3)
Receiver Differential Input Threshold Voltage –7V ≤ VCM ≤ 12V
●
±0.2
V
Receiver Input Hysteresis
VCM = 0V
25
mV
Receiver Output High Voltage
IO = –4mA, VID = 200mV, VCC = 4.5V
● 2.4
V
Receiver Output Low Voltage
IO = 4mA, VID = –200mV, VCC = 4.5V
●
0.4
V
Receiver Three-State (High Impedance) Output RE = 5V, 0V ≤ VO ≤ VCC, LTC2856-1,
●
Current on RO
LTC2856-2, LTC2858-1, LTC2858-2
±1
µA
VIH
VIL
IINL
Supplies
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
DE, DI, RE, VCC = 5.5V
DE, DI, RE, VCC = 4.5V
DE, DI, RE
●
2
●
●
V
0.8
V
0
±10
µA
ICCS
Supply Current in Shutdown Mode
DE = 0V, RE = VCC, LTC2856-1,
●
LTC2856-2, LTC2858-1, LTC2858-2
ICCR
Supply Current in Receive Mode
No Load, DE = 0V, RE = 0V, LTC2856-1, ●
LTC2856-2, LTC2858-1, LTC2858-2
ICCT
Supply Current in Transmit Mode
No Load, DE = VCC, LTC2856-1
●
RE = VCC
LTC2858-1
LTC2856-2
●
LTC2858-2
ICCTR
Supply Current with Both Driver and Receiver No Load, DE = VCC, LTC2856-1
●
Enabled
RE = 0V
LTC2857-1
LTC2858-1
LTC2856-2
●
LTC2857-2
LTC2858-2
0
5
µA
540
900
µA
630 1000
µA
670 1100
µA
660 1100
µA
700 1200
µA
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