FXM2IC102 Datasheet, PDF (11/14 Pages) Fairchild Semiconductor – Dual Supply 2-Bit I2C Interface Voltage Translator with Configurable Voltage Supplies and Signal Levels and Auto Direction Sensing

VOUT
t_rise
V_OH
80% x V_CCO
20% x V_CCO
V_OL
Time
I_OHD ≈ (C_{L +}C_I/O) x
∆V_OUT
∆t
=
(C_L
+^CI/O⁾
x
(20%
–
80%)
t_RISE
x
V_CCO
Figure 5. Active Output Rise Time and Dynamic
Output Current High
V_OH
t_fall
VOUT
80% x V_CCO
20% x V_CCO
V_OL
Time
I_OLD ≈ (C_{L +} C_I/O) x
∆V_OUT
∆t
=
(C_L
+^CI/O⁾
x
(80%
–
20%)
t_FALL
x
V_CCO
Figure 6. Active Output Fall Time and Dynamic
Output Current Low
DATA
IN
t_period
V_CCI / 2
V_CCI / 2
F-toggle rate, f = 1 / t_period
V_CCI
GND
Figure 7. Maximum Data Rate (or F-toggle) in MHz
DATA
OUTPUT
V_mo
t_skew
V_mo
V_CCO
GND
t_skew
DATA
OUTPUT
V_mo
V_CCO
V_mo
GND
t_skew = (t_pHLmax – t_pHLmin) _or (t_pLHmax – t_pLHmin)
Figure 8. Output Skew Time
©2008 Fairchild Semiconductor Corporation
FXM2IC102 Rev. 1.0.0
11
www.fairchildsemi.com