HD74LS47 Datasheet, PDF (5/7 Pages) Hitachi Semiconductor – BCD-to-Seven Segment Decoder Driver(with 15V outputs)

HD74LS47
Testing Method
Test Circuit
4.5V
V_CC
Input
P.G.
Zout = 50Ω
a
A
B
b
C
c
D
d
LT
e
RBI
f
BI/RBO _g
Output ^RL
CL
Note: C_L includes probe and jig capacitance.
Waveform
t_TLH
t_THL
90%
90%
3V
Input
1.3 V
1.3 V
10%
10%
0V
t_off
t_on
In phase output
V_OH
1.3 V
1.3 V
V_OL
t_on
t_off
Out of phase output
1.3 V
V_OH
1.3 V
V_OL
Note: Input pulse: t_TLH ≤ 15 ns, t_THL ≤ 6 ns, PRR = 1 MHz, duty cycle 50%.
Testing Table
Item
t_on
t_off
RBI
4.5 V
4.5 V
4.5 V
IN
D
GND
GND
GND
GND
Inputs
C
GND
GND
4.5 V
GND
B
GND
4.5 V
4.5 V
GND
A
IN
IN
IN
GND
a
OUT
—
OUT
OUT
b
—
—
OUT
OUT
c
—
OUT
—
OUT
Outputs
d
OUT
—
OUT
OUT
e
OUT
OUT
OUT
OUT
f
OUT
—
OUT
OUT
g
—
—
OUT
—
Rev.3.01, May 10, 2006, page 5 of 6