ST HCF4556B User Manual
HCF4556B
DUAL BINARY TO 1 OF 4 DECODER/DEMULTIPLEXER
OUTPUT LOW ON SELECT
■ EXPANDABLE WITH MULTIPLE PACKAGES
■ STANDARDIZED SYMMETRICAL OUTPUT
CHARACTERISTICS
■ QUIESCENT CURRENT SPECIFIED UP TO
20V
■ 5V, 10V AND 15V PARAMETRIC RAT INGS
■ INPUT LEAKAGE CURRENT
I
= 100nA (MAX) AT VDD = 18V TA = 25°C
I
■ 100% TESTED FOR QUIESCENT CURRENT
■
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIF ICATIONS
FOR DESCRIPTI ON OF B SERI ES CMOS
DEVICES"
DESCRIPTION
The HCF4556B is a m onolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
The HCF4556B is a dual 1 of 4 decoder/
demultiplexer. Each decoder has two select inputs
(A and B), an Enabl e input (E
), and four mutually
DIP SOP
ORDER CODES
PACKAGE TUBE T & R
DIP HCF4556BEY
SOP HCF4556BM1 HCF4556M013TR
exclusive outputs. O n the HCF4556B the ou tputs
are low on select. When the Enable input is high,
the outputs is high regardless of the state of the
select inputs A and B.
PIN CONNECTION
1/9September 2001
HCF4556B
IINPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
2, 3 A, B Select Inputs (1/2 of dual)
1E
4, 5, 6, 7 Q0
14, 13 A, B Select Inputs (1/2 of dual)
15 E
12, 1 1, 10, 9 Q0
8
16
TRUTH TABLE
INPUTS ENABLE SELECT OUTPUTS
to Q3 Outputs (1/2 of dual)
to Q3 Outputs (1/2 of dual)
V
SS
V
DD
Enable Input (1/2 of dual)
Enable Input (1/2 of dual)
Negative Supply Voltage
Positive Supply Voltage
E
LLLHHHL
LLHHHLH
LHLHLHH
LHHLHHH
HXXHHHH
X : Don’t Care
BAQ3Q2 Q1 Q0
FUNCTIONAL DIAGRAM
2/9
LOGIC DIAGRAM
HCF4556B
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
P
Supply Voltage
DD
DC Input Voltage -0.5 to VDD + 0.5
I
I
DC Input Current
I
Power Dissipation per Package 200 mW
D
-0.5 to +22 V
± 10 mA
V
Power Dissipation per Output Transistor 100 mW
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values ar e referred t o V
Operating Temperature
op
Storage Temperature
stg
pin voltage.
SS
-55 to +125 °C
-65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
T
Supply Voltage
DD
Input Voltage 0 to V
I
Operating Temperature
op
3 to 20 V
DD
-55 to 125 °C
V
3/9
Loading...