8BIT SHIFT REGISTER / LATCHES & CONSTANT CURRENT DRIVERS
Description
TB62705CP/CF/CFN
TOSHIBA Bi−CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC
TB62705CP,TB62705CF,TB62705CFN
8-BIT SHIFT REGISTER, LATCHES & CONSTANT-CURRENT DRIVERS
The TB62705CP / CF / CFN are specifically designed for LED and LED DISPLAY constant-current drivers.
These constant-current output circuits can support the set-up of an external resistor (IOUT = 5~90mA).
This IC is a monolithic integrated circuit designed to be used together with Bi-CMOS process.
The devices consist of an 8-bit shift register, latch, AND-GATE and constant-current drivers.
FEATURES
z Constant-current Output : current with one resistor for 5 to 90mA.
z Maximum Clock Frequency : fCLK = 15 (MHz) (Cascade Connecte Operate,
Topr = 25°C)
z 5V C−MOS Compatible Input
z Package
: DIP16−P−300−2.
54A (TB62705CP) SSOP16−P−225−1.
00A (TB62705CF) SSOP16−P−225−0.
65B (TB62705CFN)
z Constant Output Current Matching:
OUTPUT-GND VOLTAGE ≥ 0.
4 V
≥ 0.
7 V
CURRENT MATCHING
±6.
0%
±6.
0%
OUTPUT CURRENT 5~40 mA
5~90 mA
TB62705CP TB62705CF TB62705CFN
PIN CONNECTION (Top view)
GND SERIAL-IN
CLOCK LATCH
OUTn OUTn OUTn OUTn
1 2 3 4 5 6 7 8
16 VDD 15 R-EXT 14 SERIAL-OUT 13 ENABLE 12 OUTn 11 OUTn 10 OUTn 9 OUTn
Weight DIP16-P-300-2.
54A: 1.
11 g (typ.
) SSOP16-P-225-1.
00A: 0.
14 g (typ.
) SSOP16-P-225-0.
65B: 0.
07 g (typ.
)
1 2006-06-13
BLOCK DIAGRAM
OUTn
OUTn
TB62705CP/CF/CFN
OUTn
TIMING DIAGRAM
CLOCK SERIAL-IN
LATCH ENABLE
OUT0 OUT1 OUT3
OUT7 SERIAL-OUT
5V 0V 5V 0V 5V 0V 5V 0V
Off On Off On Off
On Off 5V 0V
Note:
Latches are level-sensitive, not rising edge-sensitive, and are not synchronized with the CLOCK signal.
The data will pass through the latch circuit if the latch input is set at “H” level, and will be retained if the input is set at “L”.
2 2006-06-13
PIN DESCRIPTION
TB62705CP/CF/CFN
PIN No.
1 2 3
4
5~12
13
14 15 16
PIN NAME
FUNCTION
GND SERIAL−IN
CLOCK
LATCH
OUTn
ENABLE
SERIAL−OUT R−EXT VDD
GND terminal for control logic Input pin for shift register serial data Clock input terminal for dat...
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