Datasheet

(Typical Operating Circuits, V+ = 2.7V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Segment Drive Source Current I
SEG
V
LED
= 2.2V,
V+ = 3.3V
T
A
= +25°C -34.5 -40 -46.5 mA
Segment Current Slew Rate DI
SEG
/Dt T
A
= +25°C, V+ = 3.3V 11 mA/µs
Segment Drive Current Matching DI
SEG
T
A
= +25°C, V+ = 3.3V 5 10 %
LOGIC INPUTS AND OUTPUTS
Input Leakage Current
DIN, CLK, CS, OSC, P0, P1, P2,
P3, P4
I
IH
, I
IL
-1 +1 µA
4-Wire Logic-High Input Voltage
DIN, CLK, CS
V
IHSPI
1.8 V
4-Wire Logic-Low Input Voltage
DIN, CLK, CS
V
ILSPI
0.6 V
Port Logic-High Input Voltage
P0, P1, P2, P3, P4
V
IHP
0.7 x
V+
V
Port Logic-Low Input Voltage
P0, P1, P2, P3, P4
V
ILP
0.3 x
V+
V
Port Hysteresis Voltage P0, P1,
P2, P3, P4
DV
IP
0.03 x
V+
V
Port Input Pullup Current from V+ I
IPU
P0 to P3 configured as keyscan input,
V+ = 3.3V
75 µA
Port Output Low Voltage V
OLP
I
SINK
= 8mA 0.3 0.5 V
Blink Output Low Voltage V
OLBK
I
SINK
= 0.6mA 0.1 0.3 V
DOUT Output High Voltage V
OHDO
I
SOURCE
= 1.6mA
V+ -
0.2
V
DOUT Output Low Voltage V
OLDO
I
SINK
= 1.6mA 0.2 V
OSC_OUT Output High Voltage V
OHOSC
I
SOURCE
= 1.6mA
V+ -
0.4
V
OSC_OUT Output Low Voltage V
OLOSC
I
SINK
= 1.6mA 0.4 V
www.maximintegrated.com
Maxim Integrated │ 3
MAX6954 4-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
DC Electrical Characteristics (continued)