HCF40257B
QUAD 2-LINE-TO-1-LINE DATA SELECTOR/MULTIPLEXER
s
s
s
s
s
s
3-STATE OUTPUTS
STANDARDIZED SYMMETRICAL OUTPUT
CHARACTERISTICS
5V, 10V AND 15V PARAMETRIC RATINGS
INPUT LEAKAGE CURRENT
I
I
= 100nA (MAX) AT V
DD
= 18V T
A
= 25°C
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B "STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DIP
SOP
ORDER CODES
PACKAGE
DIP
SOP
TUBE
HCF40257BEY
HCF40257BM1
T&R
HCF40257M013TR
DESCRIPTION
HCF40257B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
HCF40257B is a Data Selector/Multiplexer
featuring three-state outputs which can interface
directly with and drive data lines of bus-oriented
systems.
PIN CONNECTION
October 2002
1/9
HCF40257B
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
I
I
I
P
D
T
op
T
stg
Supply Voltage
DC Input Voltage
DC Input Current
Power Dissipation per Package
Power Dissipation per Output Transistor
Operating Temperature
Storage Temperature
Parameter
Value
-0.5 to +22
-0.5 to V
DD
+ 0.5
±
10
200
100
-55 to +125
-65 to +150
Unit
V
V
mA
mW
mW
°C
°C
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 are referred to V
SS
pin voltage.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
DD
V
I
T
op
Supply Voltage
Input Voltage
Operating Temperature
Parameter
Value
3 to 20
0 to V
DD
-55 to 125
Unit
V
V
°C
3/9
HCF40257B
DYNAMIC ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C, C
L
= 50pF, R
L
= 200KΩ, t
r
= t
f
= 20 ns)
Test Condition
Symbol
Parameter
V
DD
(V)
5
10
15
5
10
15
5
10
15
5
10
15
Min.
Value (*)
Typ.
150
70
50
190
85
65
95
50
40
100
50
40
Max.
300
140
100
380
170
130
190
100
80
200
100
80
ns
Unit
t
PLH
t
PHL
Propagation Delay Time
Data Input to Output
t
PLH
Select to Output
ns
t
PHL
Output Disable to Output
ns
t
TLH
t
THL
Transition Time
ns
TEST CIRCUIT
TEST
t
PLH
, t
PHL
t
PZL
, t
PLZ
t
PZH
, t
PHZ
C
L
= 50pF or equivalent (includes jig and probe capacitance)
R
L
= 200KΩ
R
T
= Z
OUT
of pulse generator (typically 50Ω)
SWITCH
Open
V
DD
V
SS
5/9
Embedded System
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