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Rev.3.01, May 10, 2006, page 1 of 6
HD74LS47
BCD-to-Seven-Segment Decoder / Driver (with 15 V Outputs)
REJ03D0410-0301
Rev.3.01
May 10, 2006
HD74LS47 features active-low outputs designed for driving incandescent indicators directly. This device has full
ripple-blanking input / output controls and a lamp test. Display patterns for BCD inpu t counts above 9 are unique
symbols to authenticate input conditions. This circuit incorporates automatic leading and / or trailing-edge zero-
blanking control (RBI and RBO). Lamp test (LT) of these types may be performed at any time when the BI / RBO
node is at a high level. It contains an overriding blanking input (BI) which can be used to control the lamp intensity of
pulsing or to inhibit the outputs. Inputs an d outputs are entirely compatible for use with TTL or DTL logic outputs.
Features
Ordering Information
Part Name Package Type Package Code
(Previous Code) Package
Abbreviation Taping Abbreviation
(Quantity)
HD74LS47P DILP-16 pin PRDP0016AE-B
(DP-16FV) P —
HD74LS47FPEL SOP-16 pin (JEITA) PRSP0016DH-B
(FP-16DAV) FP EL (2,000 pcs/reel)
Note: Please consult the sales office for the above packa ge availability.
Pin Arrangement
(Top view)
V
CC
GND
B
C
LT
BI/RBO
RBI
D
A
f
g
b
a
c
d
e
15
161
2
3
4
5
6
7
14
89
10
11
12
13
Outputs
Inputs
Inputs
B
C
D
A
RBI
BI/RBO
LT
f
g
d
e
c
b
a
HD74LS47
Rev.3.01, May 10, 2006, page 2 of 6
Function Table
Inputs Outputs
Decimal or
Function LT RBI D C B A BI/
RBO a b c d e f g
Note
0 H H L L L L H ON ON ON ON ON ON OFF
1 H X L L L H H OFF ON ON OFF OFF OFF OFF
2 H X L L H L H ON ON OFF ON ON OFF ON
3 H X L L H H H ON ON ON ON OFF OFF ON
4 H X L H L L H OFF ON ON OFF OFF ON ON
5 H X L H L H H ON OFF ON ON OFF ON ON
6 H X L H H L H OFF OFF ON ON ON ON ON
7 H X L H H H H ON ON ON OFF OFF OFF OFF
8 H X H L L L H ON ON ON ON ON ON ON
9 H X H L L H H ON ON ON OFF OFF ON ON
10 H X H L H L H OFF OFF OFF ON ON OFF ON
11 H X H L H H H OFF OFF ON ON OFF OFF ON
12 H X H H L L H OFF ON OFF OFF OFF ON ON
13 H X H H L H H ON OFF OFF ON OFF ON ON
14 H X H H H L H OFF OFF OFF ON ON ON ON
15 H X H H H H H OFF OFF OFF OFF OFF OFF OFF
1
BI X X X X X X L OFF OFF OFF OFF OFF OFF OFF 2
RBI H L L L L L L OFF OFF OFF OFF OFF OFF OFF 3
LT L X X X X X H ON ON ON ON ON ON ON 4
H; high level, L; low level, X, irrelevant
Notes: 1. The blanking input (BI) must be open or held at a high logic level when output functions 0 through 15 are
desired. The ripple-blanking input (RBI) must be open or high if blanking of a decimal zero is not desired.
2. When a low logic level is applied directly to the blanking input (BI), all segment outputs are off regardles s of
the level of any other input.
3. When ripple-blanking input (RBI) and inputs A, B, C, and D are a low level with the lamp test input hi gh, all
segment outputs go off and the ripple-blank ing output (RBO) goes to a low level (response condition).
4. When a blanking input / ripple blanking output (BI / RBO) is open or h eld high and a low is applied to the
lamp-test input, all segment outputs are on.
a
543210 6 7 8 9 101112131415
b
d
c
f
e
g
HD74LS47
Rev.3.01, May 10, 2006, page 3 of 6
Block Diagram
Blanking Input or
Ripple Blanking
Output (BI/RBO)
Lamp Test
Input (LT)
Ripple Blanking
Input (RBI)
Outputs
Inputs
A
B
C
D
a
b
c
d
e
f
g
Absolute Maximum Ratings
Item Symbol Ratings Unit
Supply voltage VCC 7 V
Input voltage VIN 7 V
Output current
(tw 1ms,duty cycle 10%) IO(peak) 200 mA
Output current (off) IO(off) 1 mA
Power dissipation PT 400 mW
Operating temperature Tupr –20 to +75 °C
Storage temperature Tstg –65 to +150 °C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
HD74LS47
Rev.3.01, May 10, 2006, page 4 of 6
Recommended Operating Conditions
Item Symbol Min Typ Max Unit
Supply voltage VCC 4.75 5.00 5.25 V
Output voltage (off) VO(off) 15 V
Input current (on) IO(on) 24 mA
IOH–50 µA
Output current IOL3.2 mA
Operating temperature Topr –20 25 75 °C
Electrical Characteristics
(Ta = –20 to +75 °C)
Item Symbol min. typ.* max. Unit Condition
VIH 2.0 V
Input voltage VIL0.8 V
VOH 2.4 — — V
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V, IOH
= –50 µA
— — 0.4 IOL = 1.6 mA
BI / RBO VOL — — 0.5
V IOL = 3.2 mA VCC = 4.75 V,
VIH = 2 V, VIL = 0.8 V
— — 0.4 IO(on) = 12 mA
Output
voltage
a to g VO(on) — — 0.5
V IO(on) = 24 mA VCC = 4.75 V,
VIH = 2 V, VIL = 0.8 V
Output
current a to g IO(off)250 µA VCC = 5.25 V, VIH = 2 V, VIL = 0.8 V,
VO(off) = 15 V
I
IH20 µA VCC = 5.25 V, VI = 2.7 V
All input
except
BI / RBO — — –0.4 mA
BI / RBO
IIL
— — –1.2 mA
VCC = 5.25 V, VI = 0.4 V Input current
I
I0.1 mA VCC = 5.25 V, VI = 7 V
Short-circuit
output current BI / RBO IOS –0.3 — –2 mA VCC = 5.25 V
Supply current** ICC7 13 mA VCC = 5.25 V
Input clamp voltage VIK–1.5 V VCC = 4.75 V, IIN = –18 mA
Notes: * VCC = 5 V, Ta = 25°C
** ICC is measured with all outputs ope n and inputs at 4.5 V.
Switching Characteristics
(VCC = 5 V, Ta = 25°C)
Item Symbol Input min. typ. max. Unit Condition
A — 100
Turn-on time ton RBI — — 100 ns
A — 100 Turn-off time toff RBI — — 100 ns CL = 15 pF, RL = 665
HD74LS47
Rev.3.01, May 10, 2006, page 5 of 6
Testing Method
Test Circuit
4.5V
A
B
C
D
LT
RBI
BI/RBO
Input
P.G.
Z
out
= 50
See Function Table
Output
V
CC
a
b
d
c
e
f
g
R
L
C
L
Note: CL includes probe and jig capacitance.
Waveform
t
off
t
on
V
OH
V
OL
0 V
3 V
V
OH
V
OL
t
on
t
off
10%
90%
1.3 V
1.3 V 1.3 V
1.3 V 1.3 V
1.3 V
10%
90%
Input
In phase output
Out of phase output
t
TLH
t
THL
Note: Input pulse: tTLH 15 ns, tTHL 6 ns, PRR = 1 MHz, duty cycle 50%.
Testing Table
Inputs Outputs
Item RBI D C B A a b c d e f g
4.5 V GND GND GND IN OUT — — OUT OUT OUT
4.5 V GND GND 4.5 V IN OUT OUT
4.5 V GND 4.5 V 4.5 V IN OUT OUT OUT OUT OUT OUT
ton
toff IN GND GND GND GND OUT OUT OUT OUT OUT OUT
HD74LS47
Rev.3.01, May 10, 2006, page 6 of 6
Package Dimensions
7.62
MaxNomMin
Dimension in Millimeters
Symbol
Reference
19.2
6.3
5.06
A1
Z
b3
D
E
A
bp
c
θ
e
L
e1
0.51
0.56
1.30
0.19 0.25 0.31
2.29 2.54 2.79
15°
20.32
7.4
0.40 0.48
1.12
2.54
1
p
1
3
1 8
16 9
e
b
A
LA
Z
e c
E
D
b
0.89
θ
( Ni/Pd/Au plating )
P-DIP16-6.3x19.2-2.54 1.05g
MASS[Typ.]
DP-16FVPRDP0016AE-B
RENESAS CodeJEITA Package Code Previous Code
0.80
0.15
1.27
7.50 8.00
0.400.34
A1
10.5
MaxNomMin
Dimension in Millimeters
Symbol
Reference
2.20
0.900.700.50
5.50
0.200.100.00
0.46
0.250.200.15
7.80
0.12
1.15
10.06
L1
Z
HE
y
x
θ
c
bp
A2
E
D
b1
c1
e
L
A
*1
*2
E
81
16 9
xM
p
*3
y
F
Index mark
b
D
E
H
Z
A
Terminal cross section
( Ni/Pd/Au plating )
p
c
b
1
1
Detail F
L
L
A
θ
NOTE)
1. DIMENSIONS"*1 (Nom)"AND"*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION"*3"DOES NOT
INCLUDE TRIM OFFSET.
e
P-SOP16-5.5x10.06-1.27 0.24g
MASS[Typ.]
FP-16DAVPRSP0016DH-B
RENESAS CodeJEITA Package Code Previous Code
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