SAA5254 Ver la hoja de datos (PDF) - Philips Electronics
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SAA5254 Datasheet PDF : 36 Pages
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Philips Semiconductors
Integrated VIP and teletext decoder
(IVT1.1X)
Preliminary specification
SAA5254
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
ODD/EVEN
VOL
LOW level output voltage
VOH
HIGH level output voltage
CL
load capacitance
to(r)
output rise time
to(f)
output fall time
COR AND Y (OPEN DRAIN)
Vpu
pull-up voltage at pin
VOL
LOW level output voltage
CL
load capacitance
to(f)
output fall time
ILO
Tskew
output leakage current
skew delay between display outputs
R, G, B, COR, Y and BLAN
IOL = 1.6 mA
IOH = −1.6 mA
0.6 to 2.2 V
2.2 to 0.6 V
IOL = 5 mA
load resistor of
1.2 kΩ to VDD;
measured between
VDD − 0.5 and 1.5 V
VI = 0 to VDD
0
−
VDD − 0.4 −
−
−
−
−
−
−
−
−
0
−
−
−
−
−
−10
−
−
−
0.4
V
VDD
V
120
pF
50
ns
50
ns
VDD
V
1.0
V
25
pF
50
ns
+10
µA
20
ns
Timing
I2C-BUS (see Fig.3)
tLOW
tHIGH
tSU;DAT
tHD;DAT
tSU;STO
clock LOW period
clock HIGH period
data set-up time
data hold time
set-up time from clock HIGH to
STOP
tBUF
tHD;STA
tSU;STA
START set-up time following a STOP
START hold time
START set-up time following clock
LOW-to-HIGH transition
4
−
−
µs
4
−
−
µs
250
−
−
ns
170
−
−
ns
4
−
−
µs
4
−
−
µs
4
−
−
µs
4
−
−
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. RGBREF is the positive supply for the RGB output pins and it must be able to source the IOH current from the
R, G and B pins. The leakage specification on RGBREF only applies when there is no current load on the RGB pins.
1996 Nov 07
10
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