SAA5281 Datasheet, PDF (12/48 Pages) NXP Semiconductors – Integrated Video input processor and Teletext decoder IVT1.8

Philips Semiconductors
Integrated Video input processor and
Teletext decoder (IVT1.8*)
Preliminary specification
SAA5281
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
ODD/EVEN OR DV
V_OL
LOW level output voltage
V_OH
HIGH level output voltage
C_L
load capacitance
t_r
output rise time
t_f
output fall time
I_OL = 1.6 mA
I_OH = −1.6 mA
between 0.6 V and
2.2 V
between 0.6 V and
2.2 V
0
−
V_DD − 0.4 −
−
−
−
−
−
−
0.4
V
V_DD
V
120
pF
50
ns
50
ns
COR AND Y (OPEN-DRAIN OUTPUTS)
V_OH
HIGH level pull-up output
voltage
−
−
V_OL
LOW level output voltage
I_OL = 2 mA
0
−
I_OL = 5 mA
0
−
C_L
load capacitance
−
−
t_f
output fall time
load resistor of 1.2 kΩ −
−
to V_DD; measured
between V_DD − 0.5 V
and 1.5 V
I_LO
t_skew
output leakage current
skew delay between display
outputs R, G, B, COR, Y and
BLAN
V_I = 0 to V_DD
−10
−
−
−
V_DD
V
0.4
V
1.0
V
25
pF
50
ns
+10
µA
20
ns
I²C-bus timing (see Fig.5)
t_LOW
t_HIGH
t_SU;DAT
t_HD;DAT
t_SU;STO
SCL clock LOW time
SCL clock HIGH time
data set-up time
data hold time
set-up time from clock HIGH
to STOP
t_BUF
START set-up time following a
STOP
t_HD;STA
t_SU;STA
START hold time
START set-up time following a
clock LOW-to-HIGH transition
4.0
−
−
µs
4.0
−
−
µs
250
−
−
ns
170
−
−
ns
4.0
−
−
µs
4.0
−
−
µs
4.0
−
−
µs
4.0
−
−
µs
Notes
1. This current is the maximum allowed into the inputs when line and field flyback signals are connected to these inputs.
Series current limiting resistors must be used to limit the input currents to ±1 mA.
2. Voltage level V_OH for R, G and B outputs is taken to be the mean value during the output HIGH time. If higher R, G
and B voltage V_OH levels are required RGBREF voltage level may be raised and a pull-up resistor used at each of
these pins provided current specification (I_OL) is not exceeded.
1996 Nov 04
12