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MM74C48N

P1-P3P4-P6
© 2002 Fairchild Semiconductor Corporation DS005883 www.fairchildsemi.com
October 1987
Revised May 2002
MM74C48 BCD-to-7 Segment Decoder
MM74C48
BCD-to-7 Segment Decoder
General Description
The MM74C48 BCD-to-7 segment decoder is a monolithic
complementary MOS (CMOS) integrated circuit con-
structed with N- and P-channel enhancement transistors.
Seven NAND gates and one driver are connected in pairs
to make binary-coded decimal (BCD) data and its comple-
ment available to the seven decoding AND-OR-INVERT
gates. The remaining NAND gate and three input buffers
provide test-blanking input/ripple-blanking output, and rip-
ple-blanking inputs.
Features
■ Wide supply voltage range: 3.0V to 15V
■ Guaranteed noise margin: 1.0V
■ High noise immunity: 0.45 V
CC
(typ.)
■ Low power TTL compatibility:
fan out of 2 driving 74L
■ High current sourcing output (up to 50 mA)
■ Ripple blanking for leading or trailing zeros (optional)
■ Lamp test provision
Ordering Code:
Connection Diagrams
Top View
Segment Identification
Numerical Designations
and Resultant Displays
Order Number Package Number Package Description
MM74C48N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
www.fairchildsemi.com 2
MM74C48
Truth Table
H = HIGH Level
L = LOW Level
X = Irrelevant
Note 1: One BI/RBO is wire-AND logic serving as blanking input (BI) and/or ripple-blanking output (RBO).
Note 2: The blanking input (BI) must be open when output functions 0–15 are desired. The ripple-blanking input (RBI) must be HIGH, if blanking of a decimal
zero is not desired.
Note 3: When a LOW logic level is applied directly to the blanking input (BI), all segment outputs are LOW regardless of the level of any other input.
Note 4: When ripple-blanking input (RBI) and inputs A, B, C, and D are at a LOW level with the lamp-test input HIGH, all segment outputs go LOW and the
ripple-blanking output (RBO) goes to a LOW level (response condition).
Note 5: When the blanking input/ripple-blanking output (BI/RBO) is open and a LOW is applied to the lamp-test input, all segment outputs are HIGH.
Decimal Inputs Outputs
or BI/RBO Note
Function LT RBI D C B A (Note 1) a b c d e f g
0 HHLLLL H HHHHHHL(Note 2)
1 H X L L L H H L H H L L L L (Note 2)
2HXLLHLHHHLHHLH
3 HXLLHH H HHHHL LH
4HXLHLLHLHHLLHH
5 HXLHLH H HLHHLHH
6 HXLHHL H L LHHHHH
7 HXLHHH H HHHLLLL
8 HXHLL L H HHHHHHH
9HXHLLHHHHHLLHH
10 H X H L H L H L L L H H L H
11 H X H L H H H L L H H L L H
12 HXHHLL H LHLLLHH
13 H X H H L H H H L L H L H H
14 HXHHHL H L LLHHHH
15 HXHHHH H LLLLLLL
BI XXXXXX L LLLLLLL(Note 3)
RBI HLLLLL L LLLLLLL(Note 4)
LT LXXXXX H HHHHHHH(Note 5)
3 www.fairchildsemi.com
MM74C48
Absolute Maximum Ratings(Note 6)
Note 6: “Absolute Maximum Ratings” are those values beyond which the
safety of the device cannot be guaranteed. Except for “Operating Tempera-
ture Range” they are not meant to imply that the devices should be oper-
ated at these limits. The Electrical Characteristics table provides conditions
for actual device operation.
DC Electrical Characteristics
Voltage at Any Pin −0.3V to V
CC
+ 0.3V
Operating Temperature Range
−55°C to +125°C
Storage Temperature Range
−65°C to +150°C
Power Dissipation
Dual-In-Line 700 mW
Small Outline 500 mW
Operating V
CC
Range 3.0V to 15V
Absolute Maximum V
CC
18V
Lead Temperature
(Soldering, 10 seconds) 260
°C
Symbol Parameter Conditions Min Typ Max Units
CMOS to CMOS
V
IN(1)
Logical “1” Input Voltage V
CC
= 5.0V 3.5
V
V
CC
= 10V 8.0
V
IN(0)
Logical “0” Input Voltage V
CC
= 5.0V 1.5
V
V
CC
= 10V 2.0
V
OUT(1)
Logical “1” Output Voltage V
CC
= 5.0V, I
O
= −10 µA4.5
V
(RB Output Only) V
CC
= 10V, I
O
= −10 µA9.0
V
OUT(0)
Logical “0” Output Voltage V
CC
= 5.0V, I
O
= 10 µA0.5
V
V
CC
= 10V, I
O
= 10 µA1.0
I
IN(1)
Logical “1” Input Current V
CC
= 15.0V, V
IN
= 15V 0.005 1.0 µA
I
IN(0)
Logical “0” Input Current V
CC
= 15.0V, V
IN
= 0V −1.0 −0.005 µA
I
CC
Supply Current V
CC
= 15V 0.05 300 µA
CMOS/LPTTL INTERFACE
V
IN(1)
Logical “1” Input Voltage V
CC
= 4.75V V
CC
− 1.5 V
V
IN(0)
Logical “0” Input Voltage V
CC
= 4.75V 0.8 V
V
OUT(1)
Logical “1” Output Voltage V
CC
= 4.75V, I
O
= −50 µA2.4 V
(RB Output Only)
V
OUT(0)
Logical “0” Output Voltage V
CC
= 4.75V, I
O
= 360 µA0.4V
OUTPUT DRIVE (See Family Characteristics Data Sheet)
I
SOURCE
Output Source Current V
CC
= 4.75V, V
OUT
= 0.4V −0.80
mA
(P-Channel) (RB Output Only) V
CC
= 10V, V
OUT
= 0.5V −4.0
I
SINK
Output Sink Current V
CC
= 5.0V, V
OUT
= V
CC
1.75 3.6 mA
(N-Channel) T
A
= 25°C
I
SINK
Output Sink Current V
CC
= 10V, V
OUT
= V
CC
8.0 16 mA
(N-Channel) T
A
= 25°C
I
SOURCE
Output Source Current V
CC
= 5.0V, V
OUT
= 3.4V −20 −50
mA
(NPN Bipolar) V
CC
= 5.0V, V
OUT
= 3.0V −65
V
CC
= 10V, V
OUT
= 8.4V −20 −50
V
CC
= 10V, V
OUT
= 8.0V −65
P1-P3P4-P6

MM74C48N

Mfr. #:
Buy MM74C48N
Manufacturer:
ON Semiconductor / Fairchild
Description:
Encoders, Decoders, Multiplexers & Demultiplexers BCD-to-7 Sec Decod
Lifecycle:
New from this manufacturer.
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