Philips Semiconductors
Chinese Character System Teletext
(CCST) decoder
Preliminary specification
SAA5700
SYMBOL
PARAMETER
DCL AND DDA (INTERNAL PULL-DOWN RESISTOR)
VIL
LOW-level input voltage
VIH
HIGH-level input voltage
VOL
LOW-level output voltage
ILI
input leakage current
Ci
input capacitance
CL
load capacitance
to(f)
output fall time
RD7 TO RD0
VIL
LOW-level input voltage
VIH
HIGH-level input voltage
VOL
LOW-level output voltage
VOH
HIGH-level output voltage
ILI
input leakage current
Ci
input capacitance
CL
load capacitance
to(r)
output rise time into CL
to(f)
output fall time into CL
Outputs
CAS
VOL
LOW-level output voltage
VOH
HIGH-level output voltage
CL
load capacitance
to(r)
output rise time into CL
to(f)
output fall time into CL
RAS, WE, ROMCS, RA10 TO RA0
VOL
LOW-level output voltage
VOH
HIGH-level output voltage
CL
load capacitance
to(r)
output rise time into CL
to(f)
output fall time into CL
ODD/EVEN (FRAME)
VOL
LOW-level output voltage
VOH
HIGH-level output voltage
CL
load capacitance
to(r)
output rise time into CL
to(f)
output fall time into CL
CONDITIONS
IOL = 1.6 mA
VI = 0 to VDD
2.2 to 0.6 V;
IOL = 1.6 mA
IOL = 1.6 mA
IOH = −0.2 mA
VI = 0 to VDD
0.6 to 2.2 V
2.2 to 0.6 V
IOL = 1.6 mA
IOH = −0.2 mA
0.6 to 2.2 V
2.2 to 0.6 V
IOL = 1.6 mA
IOH = −0.2 mA
0.6 to 2.2 V
2.2 to 0.6 V
IOL = 1.6 mA
IOH = −0.2 mA
0.6 to 2.2 V
2.2 to 0.6 V
MIN.
−0.3
2.0
0
−10
−
−
−
−0.3
2.0
0
2.4
−10
−
−
−
−
0
2.4
−
−
−
0
2.4
−
−
−
0
2.4
−
−
−
TYP.
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
MAX.
UNIT
+0.8
V
VDD + 0.5 V
0.4
V
+10
µA
10
pF
50
pF
10
ns
+0.8
V
VDD + 0.5 V
0.4
V
VDD
V
+10
µA
10
pF
30
pF
10
ns
10
ns
0.4
V
VDD
V
50
pF
5
ns
5
ns
0.4
V
VDD
V
50
pF
10
ns
10
ns
0.4
V
VDD
V
200
pF
200
ns
200
ns
1997 May 16
12