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
鹵10%,
T
amb
= 0擄C to +70擄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
20碌A/0.6mA
20碌A/0.6mA
20碌A/0.6mA
20碌A/0.6mA
20碌A/0.6mA
3.0mA/24mA
NOTE:
One (1.0) FAST Unit Load is defined as: 20碌A 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鈥?873 95586
1
2
3
4
5
