HEF4794B Просмотр технического описания (PDF) - Philips Electronics
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HEF4794B Datasheet PDF : 16 Pages
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Philips Semiconductors
8-stage shift-and-store register LED driver
Product specification
HEF4794B
AC POWER CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; input transition times ≤ 20 ns; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL FORMULA FOR P (µW)(1)
P
dynamic power dissipation per
VDD = 5 V
package
VDD = 10 V
1200fi + Σ ( foCL) × VD2 D
5550fi + Σ ( foCL) × VD2 D
VDD = 15 V
15000fi + Σ ( foCL) × VD2 D
Note
1. Where:
RL = ∞;
fi = input frequency (MHz);
fo = output frequency (MHz);
CL = load capacitance (pF);
Σ(foCL) = sum of outputs;
VDD = supply voltage (V).
AC TIMING CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤20 ns; unless otherwise specified.
SYMBOL
PARAMETER
VDD
(V)
MIN.
TYP.
MAX. UNIT
TYPICAL
EXTRAPOLATION
FORMULA
tPHL
propagation delay time CP to OS; 5
−
160 320 ns
132 ns + (0.55 ns/pF)CL
HIGH-to-LOW
10 −
65
130 ns
53 ns + (0.23 ns/pF)CL
15 −
45
90
ns
37 ns + (0.16 ns/pF)CL
tPLH
propagation delay time CP to OS; 5
−
130 260 ns
102 ns + (0.55 ns/pF)CL
LOW-to-HIGH
10 −
55
110 ns
44 ns + (0.23 ns/pF)CL
15 −
40
80
ns
32 ns + (0.16 ns/pF)CL
tPHL
propagation delay time CP to OS'; 5
−
120 240 ns
92 ns + (0.55 ns/pF)CL
HIGH-to-LOW
10 −
50
100 ns
39 ns + (0.23 ns/pF)CL
15 −
40
80
ns
32 ns + (0.16 ns/pF)CL
tPLH
propagation delay time CP to OS'; 5
−
130 260 ns
102 ns + (0.55 ns/pF)CL
LOW-to-HIGH
10 −
60
120 ns
49 ns + (0.23 ns/pF)CL
15 −
45
90
ns
37 ns + (0.16 ns/pF)CL
tPZL
propagation delay time CP to On; 5
−
240 480 ns
note 1
OFF-to-LOW
10 −
80
160 ns
15 −
55
110 ns
tPLZ
propagation delay time CP to On; 5
−
170 340 ns
note 1
LOW-to-OFF
10 −
75
150 ns
15 −
60
120 ns
1999 Jun 30
5
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