MC14556B

Manufacturer Part NumberMC14556B
Description(MC14555B / MC14556B) Dual Binary to 1-of-4 Decoder/Demultiplexer
ManufacturerMotorola
MC14556B datasheet
 


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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Dual Binary to 1-of-4
Decoder/Demultiplexer
The MC14555B and MC14556B are constructed with complementary
MOS (CMOS) enhancement mode devices. Each Decoder/Demultiplexer
has two select inputs (A and B), an active low Enable input (E), and four
mutually exclusive outputs (Q0, Q1, Q2, Q3). The MC14555B has the
selected output go to the “high” state, and the MC14556B has the selected
output go to the “low” state. Expanded decoding such as binary–to–hexade-
cimal (1–of–16), etc., can be achieved by using other MC14555B or
MC14556B devices.
Applications include code conversion, address decoding, memory selec-
tion control, and demultiplexing (using the Enable input as a data input) in
digital data transmission systems.
Diode Protection on All Inputs
Active High or Active Low Outputs
Expandable
Supply Voltage Range = 3.0 Vdc to 18 Vdc
All Outputs Buffered
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
Capable of Driving Two Low–Power TTL Loads or One Low–Power
Schottky TTL Load Over the Rated Temperature Range
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
MAXIMUM RATINGS*
(Voltages Referenced to V SS )
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
Symbol
Parameter
V DD
DC Supply Voltage
V in , V out
Input or Output Voltage (DC or Transient)
I in , I out
Input or Output Current (DC or Transient),
per Pin
P D
Power Dissipation, per Package†
T stg
Storage Temperature
T L
Lead Temperature (8–Second Soldering)
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
“P and D/DW” Packages: – 7.0 mW/C From 65
_
“L” Packages: – 12 mW/
C From 100
BLOCK DIAGRAM
MC14555B
Q0
4
2
A
Q1
5
3
B
Q2
6
1
E
Q3
7
Q0
12
14
A
Q1
11
13
B
Q2
10
15
E
Q3
9
V DD = PIN 16
V SS = PIN 8
REV 3
1/94
MOTOROLA CMOS LOGIC DATA
Motorola, Inc. 1995
Value
Unit
www.DataSheet4U.com
– 0.5 to + 18.0
V
– 0.5 to V DD + 0.5
V
10
mA
500
mW
_
– 65 to + 150
C
_
260
C
_
_
C To 125
C Ceramic
_
_
C To 125
C
MC14556B
Q0
4
2
A
Q1
5
3
B
Q2
6
1
E
Q3
7
12
Q0
14
A
11
Q1
13
B
Q2
10
15
E
9
Q3
MC14555B
MC14556B
L SUFFIX
CERAMIC
CASE 620
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
ORDERING INFORMATION
MC14XXXBCP
Plastic
MC14XXXBCL
Ceramic
MC14XXXBD
SOIC
T A = – 55 to 125 C for all packages.
TRUTH TABLE
Inputs
Outputs
Enable
Select
MC14555B
MC14556B
E
B
A
Q3 Q2 Q1 Q0 Q3 Q2 Q1 Q0
0
0
0
0
0
0
1
1
1
1
0
0
1
0
0
1
0
1
1
0
0
1
0
0
1
0
0
1
0
1
0
1
1
1
0
0
0
0
1
1
1
X
X
0
0
0
0
1
1
1
X = Don’t Care
This device contains protection circuitry to
guard against damage due to high static
voltages or electric fields. However, pre-
cautions must be taken to avoid applications of
any voltage higher than maximum rated volt-
ages to this high–impedance circuit. For proper
operation, V in and V out should be constrained
v
v
to the range V SS
(V in or V out )
V DD .
Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either V SS
or V DD ). Unused outputs must be left open.
MC14555B MC14556B
0
1
1
1
1
1

MC14556B Summary of contents

  • Page 1

    ... B), an active low Enable input (E), and four mutually exclusive outputs (Q0, Q1, Q2, Q3). The MC14555B has the selected output go to the “high” state, and the MC14556B has the selected output go to the “low” state. Expanded decoding such as binary–to–hexade- cimal (1– ...

  • Page 2

    ... (per package pF – volts kHz is input frequency, and k = 0.002. MC14555B MC14555B MC14556B 2 (Voltages Referenced – Vdc Vdc Min Max Min V OL 5.0 — 0.05 — ...

  • Page 3

    ... INPUT A HIGH, INPUT E LOW 90% INPUT B 50% 10 PHL t PLH V OH 90% OUTPUT Q3 50% MC14556B 10 THL t TLH t PLH t PHL V OH 90% OUTPUT Q3 50% MC14555B 10 TLH t THL Figure 2. Dynamic Signal Waveforms * MC14555B MC14556B Unit ...

  • Page 4

    ... 0.25 (0.010 –A– 0.25 (0.010) M MC14555B MC14556B 4 OUTLINE DIMENSIONS L SUFFIX CERAMIC DIP PACKAGE CASE 620–10 ISSUE V –B– 0.25 (0.010 SUFFIX PLASTIC DIP PACKAGE CASE 648–08 ...

  • Page 5

    ... MAXIMUM MATERIAL CONDITION. MILLIMETERS INCHES DIM MIN MAX MIN MAX A 9.80 10.00 0.386 0.393 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 G 1.27 BSC 0.050 BSC J 0.19 0.25 0.008 0.009 K 0.10 0.25 0.004 0.009 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019 are registered MC14555B MC14556B MC14555B/D 5 ...