TCA9509 Datasheet, PDF (6/14 Pages) Texas Instruments – LEVEL-TRANSLATING I2C/SMBUS BUS REPEATER

TCA9509
SCPS225 – JUNE 2011
I²C INTERFACE TIMING REQUIREMENTS
T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
V_CCA
(INPUT)
V_CCB
(OUTPUT)
TEST CONDITIONS
t_PHL
Propagation
delay
port A to port B
port B to port A
1.9 V
5.0 V
EN High
t_PLH
Propagation
delay
port A to port B
port B to port A
1.9 V
5.0 V
EN High
t_rise
t_fall
t_PLH2
f_MAX
Transition time
Transition time
Propagation
delay 50% of
initial low on
Port A to 1.5 V
on Port B
Maximum
switching
frequency
port A
port B
port A
port B
port A to port B
1.9 V
1.9 V
1.9 V
5.0 V
5.0 V
EN High
EN High
5.0 V
(1) Typical values were measured with V_CCA = V_CCB = 2.7 V at T_A = 25°C, unless otherwise noted.
PARAMETER MEASUREMENT INFORMATION
Input
V_CCI
DUT
IN
OUT
V_CCO
1.35 kW
C_L
1 MW
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MIN TYP⁽¹⁾ MAX UNIT
123.1
88.1
122.6
123.0
40.1
57.3
14.5
18.7
127.2
132.
8
ns
88.8 89.8
125.7
131.
7
ns
124.1
126.
9
40.9 41.9
ns
57.5 58.4
16.4 17.9
ns
19.4 20.2
176.0
177.3
178.
0
ns
400
KHz
PIN
SCLA, SDAA (A
side)
SDAB, SCLB (B
side)
C_L
50 pF
50 pF
6
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