Datasheet

TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 97 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
[1] Minimum value of t
of
; C
b
= total capacitance of one I
2
C-bus line [pF].
[2] Typical value of t
of
; the output fall time t
of
[ns] depends on the total load capacitance C
b
[pF] and the I
2
C-bus voltage V
DD
[V]:
t
of
=
1
⁄
12
× V
DD
× C
b
.
t
DOR(HL)
data output reaction time
(acknowledge and read
data) HIGH-to-LOW
V
DD
= 5 V; I = 3 mA;
C
b
= 400 pF;
see
Figure 41
- 700 863 ns
V
DD
= 3.3 V;
R
p
= 1.8 kΩ;
C
b
= 400 pF;
see
Figure 41
- 570 668 ns
V
DD
= 2.5 V; R
p
=35kΩ;
C
b
=10pF;
see
Figure 41
- 520 593 ns
t
DOR(LH)
data output reaction time
(read data) LOW-to-HIGH
see Figure 41 - 450 488 ns
t
of
output fall time C
b
= 10 pF to 120 pF;
see
Figure 42
[1]
20 + 0.1C
b
10 × V
DD
-ns
C
b
≥ 120 pF;
see
Figure 42
[1][2]
20 + 0.1C
b
- 250 ns
Table 112. I
2
C-bus parameters …continued
Symbol Parameter Conditions Min Typ Max Unit
a. Data change from LOW to HIGH. b. Data change from HIGH to LOW.
Fig 41. Data output reaction time of the IC
001aac124
SDA
SCL
V
IL(max)
t
DOR(LH)
001aab802
V
IL(max)
0.7V
DD
t
DOR(HL)
Fig 42. Definition of the fall time of the output signal
001aab803
V
DD
0.7V
DD
0.3V
DD
t
of