Document Outline
- Table 1: Order Codes
- Table 2: Current Accuracy
- Figure 1: Pin Connection
- Table 3: Pin Description
- Table 4: Absolute Maximum Ratings
- Table 5: Thermal Data
- Table 6: Recommended Operating Conditions
- Table 7: Electrical Characteristics (VDD=5V, T = 25 C, unless otherwise specified.)
- Table 8: Switching Characteristics (VDD=3.3 to 5.5V, T = 25 C, unless otherwise specified.)
- Figure 2: OE/DM2 Terminal
- Figure 3: LE/DM1 Terminal
- Figure 4: CLK, SDI Terminal
- Figure 5: SDO Terminal
- Figure 6: Block Diagram
- Figure 7: Timing Diagram
- Figure 8: Clock, Serial-In, Serial-Out
- Figure 9: Clock, Serial-In, Latch, Enable, Outputs
- Figure 10: Outputs
- Figure 11: DC Characteristic
- Figure 12: AC Characteristic
- Table 9: Entering In Detection Truth Table
- Figure 13: Entering In Detection Timing Diagram
- Figure 14: Detection Diagram
- Table 10: Detection Condition (VDD = 3.3 to 5 V Temp. Range -40 to 85 C)
- Figure 15: Detection Mode
- Table 11: Resuming to Normal Mode Timing Diagram
- Figure 16: Resuming to Normal Mode Timing Diagram
- Figure 17: Typical Output Current-REXT Resistor
- Figure 18: Power Dissipation vs Temperature Package
- Figure 19: Typical Dropout Voltage vs Output Current
- Figure 20: Typical Output Current vs DIOL(%)
- Figure 21: Timing example for Open and/or Short detection
- Table 12: Revision History
1/20
October 2005
8 CONSTANT CURRENT OUTPUT
CHANNELS
ADJUSTABLE OUTPUT CURRENT
THROUGH ONE EXTERNAL RESISTOR
OPEN AND SHORT LINE, SHORT TO GND,
SHORT TO V-LED SUPPLY ERROR
DETECTION
SERIAL DATA IN/PARALLEL DATA OUT
SERIAL OUT CHANGE STATE ON THE
FALLING EDGES OF CLOCK
OUTPUT CURRENT: 20-120 mA
25 MHz CLOCK FREQ.
DESCRIPTION
The STP08CDC596 is a monolithic,
medium-voltage, low current power 8-bit shift
register designed for LED panel display. The
STP08CDC596 contains a 8-bit serial-in,
parallel-out shift register that feeds a 8-bitD-type
storage register. In the output stage, eight
regulated current sources were designed to
provide 15-120mA constant current to drive the
LEDs.
The STP08CDC596 contains the built-IN error
detection feature. The device performs this
additional function without any increase of the pin
number and any change of the pin function, if
compared to the standard device without error
detection. Consequently, choosing this device
does not mean to change the footprint on the
board. To perform this functionality mode, the
device needs a digital key coming from the
Microprocessor. The STP08CDC596 is able to
detect: open and short on the LED line, short to
GND, short to Led voltage supply. The data
mapping of output channels status detection is
provided by a feedback from the serial output to
the Microprocessor.
Trough an external resistor, users may adjust the
STP08CDC596 output current, controlling the light
intensity of LEDs.
The STP08CDC596 guarantees 16V output
driving capability, allowing users to connect more
LEDs in series. The high clock frequency, 25 MHz,
also satisfies the system requirement of high
volume data transmission.
The device is offered in DIP-16, SO-16 and
TSSOP-16 packages.
The STP08CDC596 is well suitable for traffic
display signs where the detection feature is
strongly required.
Table 1: Order Codes
Type
Temp. Range
Package
Comments
STP08CDC596B1
-40C to 125C
DIP-16
25 part per tube
STP08CDC596M
-40C to 125C
SO-16 (Tube)
50 parts per tube
STP08CDC596MTR
-40C to 125C
SO-16 (Tape & Reel)
2500 parts per reel
STP08CDC596TTR
-40C to 125C
TSSOP16 (Tape & Reel)
2500 parts per reel
STP08CDC596
8-BIT CONSTANT CURRENT
LED SINK DRIVER WITH FULL OUTPUT DETECTION
SO-16
DIP-16
TSSOP16
Rev. 2
STP08CDC596
2/20
Table 2: Current Accuracy
Figure 1: Pin Connection
Table 3: Pin Description
Table 4: Absolute Maximum Ratings
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Output Voltage
Current accuracy
Output Current
Between bits
Between ICs
0.7V
TYP. 3%
10%
20 to 120 mA
PIN N
Symbol
Name and Function
1
GND
Ground Terminal
2
SDI
Serial data input terminal
3
CLK
Clock input terminal
4
LE/DM1
Latch input terminal
5-12
OUT 0-7
Output terminal
13
OE/DM2
Output enable input terminal (active low)
14
SDO
Serial data out terminal
15
R-EXT
Constant Current programming
16
V
DD
5V Supply voltage terminal
Symbol
Parameter
Value
Unit
V
DD
Supply Voltage
0 to 7
V
V
O
Output Voltage
-0.5 to 16
V
I
O
Output Current
120
mA
V
I
Input Voltage
-0.4 to V
DD
+0.4
V
I
GND
GND Terminal Current
980
mA
f
CLK
Clock Frequency
25
MHz
T
OPR
Operating Temperature Range
-40 to +125
C
T
STG
Storage Temperature Range
-55 to +150
C
STP08CDC596
3/20
Table 5: Thermal Data
Table 6: Recommended Operating Conditions
(1) If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please considered the timings carefully.
(2) In normal mode the OE/DM2 must remain low at least two clock cycles.
Table 7: Electrical Characteristics (V
DD
=5V, T
= 25C, unless otherwise specified.)
Symbol
Parameter
DIP-16
SO-16
TSSOP16
Unit
R
thj-amb
Thermal Resistance Junction-ambient
90
125
140
C/W
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Supply Voltage
3.3
5.5
V
V
O
Output Voltage
16.0
V
I
O
Output Current
OUTn
15
120
mA
I
OH
Output Current
SERIAL-OUT
+1
mA
I
OL
Output Current
SERIAL-OUT
-1
mA
V
IH
Input Voltage
0.7V
DD
V
DD
+0.3
V
V
IL
Input Voltage
-0.3
0.3V
DD
V
t
wLAT
LE/DM1 Pulse Width
V
DD
= 3.0 to 3.6V
10
20
ns
t
wCLK
CLK Pulse Width
10
20
ns
t
wEN
OE/DM2 Pulse Width (1)
120
400
ns
t
SETUP(D)
Setup Time for DATA
5
20
ns
t
HOLD(D)
Hold Time for DATA
4
15
ns
t
SETUP(L)
Setup Time for LATCH
8
15
ns
f
CLK
Clock Frequency (2)
25
MHz
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
IH
Input Voltage High Level
0.7V
DD
V
DD
V
V
IL
Input Voltage Low Level
GND
0.3V
DD
V
I
OH
Output Leakage Current
V
OH
= 16 V
10
A
V
OL
Output Voltage (Serial-OUT) I
OL
= 1mA
0.4
V
V
OH
Output Voltage (Serial-OUT) I
OH
= -1mA
V
DD
-0.4V
V
I
OL1
Output Current
V
O
= 0.7V R
EXT
= 910
18.8
20.9
24.00
mA
I
OL2
V
O
= 0.7V R
EXT
= 360
46.00
51.5
56.5
mA
I
OL1
Output Current Error
between bit (All Output ON)
V
O
= 0.7V R
EXT
= 910
2
5
%
I
OL2
V
O
= 0.7V R
EXT
= 360
1
4
%
R
SIN(up)
Pull-up Resistor
150
300
600
K
R
SIN(down)
Pull-down Resistor
100
200
400
K
I
DD(OFF1)
Supply Current (OFF)
R
EXT
= OPEN OUT 0 to 7 = OFF
0.45
0.7
mA
I
DD(OFF2)
R
EXT
= 910
OUT 0 to 7 = OFF
3.0
6.0
I
DD(OFF3)
R
EXT
= 360
OUT 0 to 7 = OFF
8.2
12.0
I
DD(ON1)
Supply Current (ON)
R
EXT
= 910
OUT 0 to 7 = ON
3.1
6.2
I
DD(ON2)
R
EXT
= 360
OUT 0 to 7 = ON
8.4
12.8
STP08CDC596
4/20
Table 8: Switching Characteristics (V
DD
=3.3 to 5.5V, T
= 25C, unless otherwise specified.)
EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS
Figure 2: OE/DM2 Terminal
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
t
PLH1
Propagation Delay Time,
CLK-OUTn, LE/DM1 = H,
OE/DM2 = L
V
DD
= 3 V
V
IH
= V
DD
V
IL
= GND
C
L
= 13pF
I
O
= 40mA
V
L
= 3 V
R
EXT
= 470
R
L
= 65
180
280
ns
t
PLH2
Propagation Delay Time,
LE/DM1-OUTn, OE/DM2 = L
150
280
ns
t
PLH3
Propagation Delay Time,
OE/DM2-OUTn, LE/DM1 = H
140
280
ns
t
PLH
Propagation Delay Time,
CLK-SDO
25
35
ns
t
PHL1
Propagation Delay Time,
CLK-OUTn, LE/DM1 = H,
OE/DM2 = L
30
60
ns
t
PHL2
Propagation Delay Time,
LE/DM1-OUTn, OE/DM2 = L
30
50
ns
t
PHL3
Propagation Delay Time,
OE/DM2-OUTn, LE/DM1 = H
35
70
ns
t
PHL
Propagation Delay Time,
CLK-SDO
30
40
ns
t
r
Output Rise Time
220
ns
t
f
Output Fall Time
20
ns
STP08CDC596
5/20
Figure 3: LE/DM1 Terminal
Figure 4: CLK, SDI Terminal
Figure 5: SDO Terminal
PDF 
ZIP