Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
DESCRIPTION
The 74F537 is a one-of-ten decoder/demultiplexer with four active
High BCD inputs and ten mutually exclusive outputs. A Polarity
control (P) input determines whether the outputs are active Low or
active High. The 74F537 has 3-State outputs and a High signal on
the Output Enables (OE) input forces all outputs to the high
impedance state. Two input Enables, active High (E1) and active
Low (E0), are available for demultiplexing data to the selected
output in either non-inverted or inverted form. Input codes greater
than BCD nine causes all outputs to go to the inactive state (i.e.,
same polarity as the P input).
TYPICAL SUPPLY
CURRENT
(TOTAL)
44mA
PIN CONFIGURATION
Q2
Q1
Q0
P
OE
A0
A1
1
2
3
4
5
6
7
8
9
20 VCC
19 Q3
18 Q4
17 A3
16 A2
15 E0
14 E1
13 Q9
12 Q8
11 Q7
TYPE
74F537
TYPICAL
PROPAGATION DELAY
9ns
Q5
Q6
GND 10
SF01004
ORDERING INFORMATION
DESCRIPTION
20-Pin Plastic DIP
20-Pin Plastic SOL
COMMERCIAL RANGE
V
CC
= 5V
±10%,
T
amb
= 0°C to +70°C
N74F537N
N74F537D
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
A0 - A3
E0
E1
P
OE
Q0 - Q9
Data inputs
Enable input (active Low)
Enable input (active High)
Polarity control input
Output Enable input
Data outputs
DESCRIPTION
74F(U.L.)
HIGH/LOW
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
150/40
LOAD VALUE
HIGH/LOW
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
3.0mA/24mA
NOTE:
One (1.0) FAST Unit Load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
6
7
16
17
LOGIC SYMBOL (IEEE/IEC)
DMUX
4
A0
A1
A2
A3
5
N10
&
EN
3
0,10
1,10
2,10
3,10
2
1
19
18
8
9
11
12
13
4
15
14
5
P
E0
E1
OE
6
7
17
13
Q0
Q1
Q2
Q3
Q4 Q5
Q6
Q7
Q8
Q9
14
15
&
3
0
10G
0
9
4,10
5,10
6,10
7,10
8,10
9,10
VCC = Pin 20
GND = Pin 10
3
2
1
19
18
8
9
11
12
13
SF01005
SF01006
1989 Jan 20
1
853–0873 95586
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
LOGIC DIAGRAM
A3
17
A2
16
A1
7
A0
6
E0
E1
15
14
P
4
OE
V
CC
=
GND =
Pin 20
Pin 10
5
3
Q0
2
Q1
1
Q2
19
Q3
18
Q4
8
Q5
9
Q6
11
Q7
12
Q8
13
Q9
SF01007
FUNCTION TABLE
INPUTS
OE
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
X
Z
=
=
=
=
E0
X
H
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
E1
X
X
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
A3
X
X
X
L
L
L
L
L
L
L
L
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
H
A2
X
X
X
L
L
L
L
H
H
H
H
L
L
X
L
L
L
L
L
H
H
H
H
L
L
X
H
A1
X
X
X
L
L
H
H
L
L
H
H
L
L
H
X
L
L
H
H
L
L
H
H
L
L
H
X
A0
X
X
X
L
H
L
H
L
H
L
H
L
H
X
X
L
H
L
H
L
H
L
H
L
H
X
X
H
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
L
H
L
L
L
L
L
L
L
L
L
L
H
L
H
H
H
H
H
H
H
H
H
H
L
L
H
L
L
L
L
L
L
L
L
L
H
H
L
H
H
H
H
H
H
H
H
H
Q0
Z
Q1
Z
Q2
Z
Q3
Z
OUTPUTS
Q4
Z
Q5
Z
Q6
Z
Q7
Z
Q8
Z
Q9
Z
OPERATING MODE
High Impedance
Disable
L
L
L
L
L
L
L
H
L
L
L
L
H
H
H
H
H
H
H
L
H
H
H
H
L
L
L
L
L
L
L
L
H
L
L
L
H
H
H
H
H
H
H
H
L
H
H
H
L
L
L
L
L
L
L
L
L
H
L
L
H
H
H
H
H
H
H
H
H
L
H
H
A i L
Active Low output
(P = H)
Active High
A i Hi h output
(P = L)
Outputs equal P input
L
L
L
H
L
L
L
L
L
L
L
L
H
H
H
L
H
H
H
H
H
H
H
H
L
L
L
L
H
L
L
L
L
L
L
L
H
H
H
H
L
H
H
H
H
H
H
H
L
L
L
L
L
H
L
L
L
L
L
L
H
H
H
H
H
L
H
H
H
H
H
H
L
L
L
L
L
L
H
L
L
L
L
L
H
H
H
H
H
H
L
H
H
H
H
H
High voltage level
Low voltage level
Don’t care
High impedance “off” state
1989 Jan 20
2
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
V
CC
V
IN
I
IN
V
OUT
I
OUT
T
amb
T
stg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature
PARAMETER
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5.0
–0.5 to +V
CC
48
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
IH
V
IL
I
IK
I
OH
I
OL
T
amb
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature range
0
PARAMETER
LIMITS
MIN
4.5
2.0
0.8
–18
–3.0
24
70
NOM
5.0
MAX
5.5
UNIT
V
V
V
mA
mA
mA
°C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
V
O
OH
V
OL
V
IK
I
I
I
IH
I
IL
I
OZH
I
OZL
I
OS
PARAMETER
High-level
High level output voltage
TEST CONDITIONS
1
V
CC
= MIN, V
IL
= MAX,
V
IH
= MIN, I
OH
= MAX
V
CC
= MIN, V
IL
= MAX,
V
IH
= MIN, I
OL
= MAX
V
CC
= MIN, I
I
= I
IK
V
CC
= MAX, V
I
= 7.0V
V
CC
= MAX, V
I
= 2.7V
V
CC
= MAX, V
I
= 0.5V
V
CC
= MAX, V
O
= 2.7V
V
CC
= MAX, V
O
= 0.5V
V
CC
= MAX
–60
±10%V
CC
±5%V
CC
±10%V
CC
±5%V
CC
LIMITS
MIN
2.4
2.7
3.3
0.35
0.35
–0.73
0.50
0.50
–1.2
100
20
–0.6
50
–50
–150
TYP
2
MAX
UNIT
V
V
V
V
V
µA
µA
mA
µA
µA
mA
Low-level output voltage
Input clamp voltage
Input current at maximum input
voltage
High-level input current
Low-level input current
Off-state current
High-level voltage applied
Off-state current
Low-level voltage applied
Short-circuit output current
3
I
CC
Supply current (total)
V
CC
= MAX
44
66
mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value under the recommended operating conditions for the applicable type.
2. All typical values are at V
CC
= 5V, T
amb
= 25°C.
3. Not more than one output should be shorted at a time. For testing I
OS
, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I
OS
should be performed last.
1989 Jan 20
3
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25°C
V
CC
= +5.0V
C
L
= 50pF, R
L
= 500Ω
MIN
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
An to Qn
Propagation delay
E0 to Qn
Propagation delay
E1 to Qn
Propagation delay
P to Qn
Output Enable time
OE to Qn
Output Disable time
OE to Qn
Waveform 1
Waveform 2
Waveform 2
Waveform 1
Waveform 3
Waveform 4
Waveform 3
Waveform 4
4.5
3.0
4.0
3.0
6.0
4.0
5.0
3.5
2.5
4.0
1.5
2.0
TYP
9.0
7.5
8.0
8.0
8.5
8.5
12.5
6.5
4.5
5.5
3.0
4.0
MAX
14.0
11.0
11.0
11.0
11.5
11.5
16.0
10.0
7.0
8.0
6.0
6.5
T
amb
= 0°C to +70°C
V
CC
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500Ω
MIN
4.5
3.0
4.0
3.0
6.0
4.0
5.0
3.5
2.5
4.0
1.0
2.0
MAX
16.0
12.0
12.0
12.0
13.0
12.5
17.0
11.0
8.0
9.0
7.0
7.0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
An, P, E0, E1
V
M
t
PLH
V
M
t
PHL
V
M
V
M
E0, E1
V
M
t
PHL
V
M
t
PLH
V
M
V
M
Qn
Qn
SF01008
SF01009
Waveform 1. Propagation Delay for
Non-Inverting Outputs
Waveform 2. Propagation Delay for
Inverting Outputs
OE
V
M
t
PZH
V
M
t
PHZ
V
M
0V
V
OH
-0.3V
OE
V
M
t
PZL
V
M
t
PLZ
V
M
V
OL
+0.3V
Qn
Qn
SF01010
SF01011
Waveform 3. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
Waveform 4. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
1989 Jan 20
4
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
TEST CIRCUIT AND WAVEFORM
V
CC
7.0V
V
IN
PULSE
GENERATOR
R
T
D.U.T.
V
OUT
R
L
NEGATIVE
PULSE
90%
V
M
10%
t
THL (
t
f
)
C
L
R
L
t
TLH (
t
r
)
90%
POSITIVE
PULSE
10%
t
THL (
t
f
)
AMP (V)
90%
V
M
t
w
10%
0V
t
w
V
M
10%
t
TLH (
t
r
)
0V
AMP (V)
90%
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST
t
PLZ
t
PZL
All other
SWITCH
closed
closed
open
V
M
Input Pulse Definition
DEFINITIONS:
R
L
= Load resistor;
see AC electrical characteristics for value.
C
L
= Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
R
T
= Termination resistance should be equal to Z
OUT
of
pulse generators.
INPUT PULSE REQUIREMENTS
family
amplitude V
M
74F
3.0V
1.5V
rep. rate
1MHz
t
w
500ns
t
TLH
2.5ns
t
THL
2.5ns
SF00777
1989 Jan 20
5
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