MC74F538 查看數據表（PDF） - Motorola => Freescale
零件编号
产品描述 (功能)
比赛名单
MC74F538 Datasheet PDF : 4 Pages
| |||
1-OF-8 DECODER
WITH 3-STATE OUTPUTS
The MC54 / 74F538 decoder/demultiplexer accepts three Address (A0 – A2)
input signals and decodes them to select one of eight mutually exclusive
outputs. A polarity control input (P) determines whether the outputs are active
LOW or active HIGH. A HIGH Signal on either of the active LOW Output
Enable (OE) inputs forces all outputs to the high impedance state. Two active
HIGH and two active LOW input enables are available for easy expansion to
1-of-32 decoding with four packages, or for data demultiplexing to 1-of-8 or
1-of-16 destinations.
• Output Polarity Control
• Data Demultiplexing Capability
• Multiple Enables for Expansion
• 3-State Outputs
• ESD Protection > 4000 Volts
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC O3 O4 A2 E1 E2 E3 E4 P O7
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
O2 O1 O0 OE1 OE2 A0 A1 O5 O6 GND
MC54/74F538
1-OF-8 DECODER
WITH 3-STATE OUTPUTS
FAST™ SCHOTTKY TTL
20
1
20
1
20
1
J SUFFIX
CERAMIC
CASE 732-03
N SUFFIX
PLASTIC
CASE 738-03
DW SUFFIX
SOIC
CASE 751D-03
LOGIC DIAGRAM
A2
A1
A0
E1
E2
E3
E4
P
OE1
OE2
O0 O1 O2 O3 O4 O5 O6 O7
Please note that this diagram is provided only for the understanding of logic operations and
should not be used to estimate propagation delays.
ORDERING INFORMATION
MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXDW SOIC
LOGIC SYMBOL
12
6 7 17
P
16
E1
A0 A1 A2
15
E2
14
E3
13
E4
4
OE1
5
OE2
O0 O1 O2 O3 O4 O5 O6 O7
3 2 1 14 18 8 9 11
VCC = PIN 20
GND = PIN 10
Share Link: 