Linear Technology DC1079A-A - LTC4310-1 (100kHz) I²C Isolator DC1079A-A DC1079A-A 데이터 시트
제품 코드
DC1079A-A
LTC4310-1/LTC4310-2
3
431012fa
elecTrical characTerisTics
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
V
V
CC
Input Supply Range
l
3
5.5
V
I
CC
Input Supply Current, LTC4310-1
Input Supply Current, LTC4310-2
EN = V
CC
= 5.5V, SDA = SCL = V
SDA,SCL(OL)
EN = V
CC
= 5.5V, SDA = SCL = V
SDA,SCL(OL)
l
l
6.5
7
8
8.5
mA
mA
I
CC(SD)
Shutdown Input Supply Current
EN = 0V, V
CC
= 5.5V
l
0.1
±10
µA
V
CCH(UVL)
Input Supply Undervoltage Lockout
Rising Threshold Voltage
l
2.1
2.4
2.7
V
V
CC(UVL, HYST)
Input Supply Undervoltage Lockout
Hysteresis
l
90
190
270
mV
I
2
C Interface
V
SDA,SCL(OL)
SDA, SCL Logic Low Output Voltage
I
(SDA,SCL)
= 4mA, 500µA; V
CC
= 3V, 5.5V
l
310
350
380
mV
V
SDA,SCL(IL,R)
SDA, SCL Controlled Rising Edge Rate
Turn-Off Threshold Voltage
V
CC
= 3V, 5.5V (Note 5)
l
0.3 • V
CC
0.35 • V
CC
0.4 • V
CC
V
V
SDA,SCL(IL,F)
SDA, SCL Logic Low Falling Input
Threshold Voltage
V
CC
= 3V
l
0.4 • V
CC
0.45 • V
CC
0.5 • V
CC
V
I
SDA,SCL(OH)
SDA, SCL Input Current
SDA = SCL = 5.5V; V
CC
= 0V, 5.5V
l
0
±5
µA
I
2
C Interface Timing
dV/dt
RISE
Bus Line Controlled Rising Edge Rate,
LTC4310-1
0.35V < V
BUS
< 0.35 • V
CC
, V
CC
= 3V
0.35V < V
BUS
< 0.35 • V
CC
, V
CC
= 5.5V
l
l
0.8
1.5
1.16
2.14
1.4
2.6
V/µs
V/µs
Bus Line Controlled Rising Edge Rate,
LTC4310-2
0.35V < V
BUS
< 0.35 • V
CC
, V
CC
= 3V
0.35V < V
BUS
< 0.35 • V
CC
, V
CC
= 5.5V
l
l
2
3.9
3
5.4
3.9
6.9
V/µs
V/µs
t
PHL(SDA,SCL)
SDA, SCL High-to-Low Propagation
Delay
V
CC
= 5.5V (Note 3)
l
170
270
ns
f
SCL(MAX)
Maximum SCL Clock Frequency
LTC4310-1
LTC4310-2
l
l
100
400
kHz
kHz
C
IN
SCL, SDA Input Capacitance
SCL, SDA = V
CC
(Note 2)
10
pF
Rise Time Accelerators
V
V
BOOST
SDA, SCL Rise Time Accelerator
Activation Threshold Voltage
V
CC
= 3V (Note 5)
l
0.32 • V
CC
0.45 • V
CC
0.5 • V
CC
V
I
BOOST
SDA, SCL Rise Time Accelerator
Current
V
CC
= 3V
l
2
6
mA
READY Open-Drain Output
V
V
READY(OL)
READY Output Low Voltage
I
READY
= 4mA
l
50
400
mV
I
READY(OH)
READY Off-Current
READY= V
CC
= 5.5V, EN = 0V
l
0.1
±10
µA
Connection Control
V
V
EN,RISE
EN Rising Threshold Voltage
l
0.6 • V
CC
0.9 • V
CC
V
V
EN,FALL
EN Falling Threshold Voltage
l
0.1 • V
CC
0.3 • V
CC
V
I
EN(OH)
EN Input Current
EN = V
CC
= 5.5V
l
0.1
±10
µA
t
IDLE
Bus Idle Time
l
75
115
155
µs
t
UVLO,EN_FILT
Start-Up Filter Time
l
700
900
1200
µs
t
STUCK
SDA, SCL Bus Stuck Low Disconnect
l
27
37
47
ms
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V, unless otherwise noted.