Datasheet

 2016 Microchip Technology Inc. DS20005651A-page 5
MM5450/51
TABLE 1-1: ELECTRICAL CHARACTERISTICS
Electrical Characteristics: 4.5V ≤ V
DD
≤ 11V, V
SS
= 0V; T
A
= 25°C, bold values valid for –40°C ≤ T
A
≤ +85°C,
unless otherwise noted.
Parameter Symbol Min. Typ. Max. Units Conditions
Power Supply Current —
——8.5
mA
–25°C to +85°C, excluding output loads
——10 –40°C to +85°C, excluding output loads
Data Input Voltage
V
L
–0.3 — 0.8
V
Logic-0 level, ±10 µA input bias
V
H
2.2 — V
DD
Logic-1 level, 4.75V ≤ V
DD
≤ 5.25V
—
V
DD
–
2
— V
DD
V
DD
> 5.25V
Brightness Control Input
Current
— 0 — 0.75 mA Note 1
Output Sink Current —
——10
µA
Segment off, V
OUT
= 3.0V
0 — 10
Segment on, V
OUT
= 1.8V, Note 2;
Brightness input = 0 µA
2.0 2.7 4
mA
Segment on, V
OUT
= 1.8V, Note 2;
Brightness input = 100 µA
15 — 25
Segment on, V
OUT
= 1.8V, Note 2;
Brightness input = 750 µA
Brightness Control Input
Voltage
— 3.0 — 4.3 V Input current = 750 µA
Output Matching — — — ±20 % Note 3, Note 4
Clock Input Frequency f
C
——500 kHz Note 5, Note 6
Clock Input High Time t
H
950 ——ns Note 5, Note 6
Clock Input Low Time t
L
950 ——ns Note 5, Note 6
Data Input Setup Time t
DS
300 ——ns —
Data Input Hold Setup
Time
t
DH
300 ——ns —
Data Enable Input Setup
Time
t
DES
100 ——ns —
Reset Pad Current — –8 — 8 µA Die.
Note 1: With a fixed resistor on the brightness input pin, some variation in brightness will occur among devices.
2: See Figure 2-1, Figure 2-2, and Figure 2-3 for recommended operating conditions and limits. Absolute
maximum for each output should be limited to 40 mA.
3: Output matching is calculated as the percent variation of (I
MAX
+ I
MIN
) / 2.
4: V
OUT
should be regulated by user. See Figure 2-2 and Figure 2-3 for allowable V
OUT
vs. I
OUT
operation.
5: AC input waveform specification for test purpose: t
R
≤ 200 ns, t
F
≤ 20 ns, f = 500 kHz, 50% ±10% duty
cycle.
6: Clock input rise and fall times must not exceed 300 ns.