參數(shù)資料
型號: PCA9517
廠商: NXP Semiconductors N.V.
英文描述: Level translating I2C-bus repeater
中文描述: 級別翻譯I2C總線中繼器
文件頁數(shù): 8/13頁
文件大?。?/td> 107K
代理商: PCA9517
Philips Semiconductors
Product data sheet
PCA9517
Level translating I
2
C-bus repeater
2004 Oct 05
8
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
UNIT
MIN.
100
TYP.
170
80
7
MAX.
250
t
PLH
t
PHL
Propagation delay, B to A side
Waveform 3; Note 3
V
CCA
2.7 V; Waveform 1
V
CCA
3 V; Waveform 1
Waveform 2
V
CCA
2.7 V; Waveform 2
V
CCA
3 V; Waveform 2
Waveform 2; Note 2
ns
Propagation delay, B to A side
30
110
ns
10
66
300
ns
t
TLH
t
THL
Transition time, A side
10
20
77
7
30
ns
Transition time, A side
1
105
ns
20
70
175
ns
t
PLH
t
PHL
t
TLH
t
THL
t
SET
t
HOLD
NOTES:
1. Times are specified with loads of 1.35 k
pull-up resistance and 57 pF load capacitance on the B side and 167
pull-up and 57 pF load
capacitance on the A side. Different load resistnace and capacitance will alter the RC time constant, thereby changing the propagation delay
and transition times.
2. The proportional delay data from A to B side is measured at 0.3V
CCA
on the A side to 1.5 V on the B side.
3. The t
PLH
delay data from B to A side is measured at 0.5 V on the B side to 0.5V
CCA
on the A side when V
CCA
is less than 2 V, and 1.5 V on
the A side if V
CCA
is greater than 2 V.
4. Pull-up voltages are V
CCA
on the A side and V
CCB
on the B side.
5. Typical values were measured with V
CCA
= 3.6 V at T
amb
= 25
°
C, unless otherwise noted.
6. The enable pin, EN, should only change state when the global bus and the repeater port are in an idle state.
7. Typical value measured with V
CCA
= 2.7 V at T
amb
= 25
°
C.
Propagation delay, A to B side
25
53
110
ns
Propagation delay, A to B side
Waveform 2; Note 2
60
79
230
ns
Transition time, B side
Waveform 1
120
140
170
ns
Transition time, B side
Waveform 1
30
48
90
ns
Enable HIGH before Start condition
Note 6
100
ns
Enable HIGH after Stop condition
Note 6
100
ns
AC WAVEFORMS
3.3 V
0.1 V
1.5 V
1.5 V
INPUT
OUTPUT
1.2 V
V
OL
t
PHL
t
PLH
80%
20%
0.6 V
0.6 V
20%
80%
t
THL
t
TLH
SW02169
Waveform 1.
0.3V
CCA
INPUT
OUTPUT
3.3 V
80%
20%
1.5 V
1.5 V
80%
20%
SW02170
0.3V
CCA
V
CCA
V
CCA
Waveform 2.
t
PLH
50 % if V
CCA
is less than 2 V
1.5 V if V
CCA
is greater than 2 V
0.5 V
INPUT
SDAB, SCLB
OUTPUT
SCLA, SDAA
SW02341
Waveform 3.
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