Motorola MC74F827DW, MC74F827N, MC54F827J Datasheet
4-261
FAST AND LS TTL DATA
10-BIT BUFFERS/LINE DRIVERS
(WITH 3-STATE OUTPUTS)
The MC54/74F827 and MC54/74F828 10-bit bus buffers provide high performance bus interface buffering for wide data/address paths or buses carrying parity. The 10-bit buffers have NOR output enables for maximum control
flexibility.
The F827 and F828 are functionally and pin compatible to AMD’s 29827
and 29828. The F828 is an inverting version of the F827.
• 3-State Outputs Drive Memory Address, Bus and Clock Lines
• Outputs Sink 64 mA
• 15 mA Source Current
• Flow Through Pinout Architecture for Microprocessor Oriented
Applications
CONNECTION DIAGRAMS (TOP VIEW)
22 21 20 19 18 17
1 2 3 4 5 6
7
24 23
8
V
CC
OE
1
O0O1O2O
3
O
5
O
4
O
6
D0D1D2D3D4D5D
6
9 10
11
12
D7D8D9GND
16 15 14 13
O
7
O
9
O
8
OE
2
22 21 20 19 18 17
1 2 3 4 5 6
7
24 23
8
V
CC
OE
1
O0O1O2O
3
O
5
O
4
O
6
D0D1D2D3D4D5D
6
9 10
11
12
D7D8D9GND
16 15 14 13
O
7
O
9
O
8
OE
2
F827
F828
LOGIC DIAGRAM
D
9
O
9
D
8
O
8
D
7
O
7
D
6
O
6
D
5
O
5
D
4
O
4
D
3
O
3
D
2
O
2
D
1
O
1
D
0
O
0
OE
1
OE
2
Please note that this diagram is provided only for the understanding of logic operations and should
not be used to estimate propagation delays.
MC54/74F827
MC54/74F828
10-BIT BUFFERS/LINE DRIVERS
(WITH 3-STATE OUTPUTS)
FAST SCHOTTKY TTL
ORDERING INFORMATION
MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXDW SOIC
N SUFFIX
PLASTIC
CASE 724-03
DW SUFFIX
SOIC
CASE 751E-03
24
1
24
1
J SUFFIX
CERAMIC
CASE 758-01
24
1
LOGIC SYMBOL
OE
1
OE
2
D0D1D2D3D4D5D6D7D8D
9
O
0
O1O2O3O4O5O6O7O8O
9
F827
2 3 4 5 6 7 8 9 10 11
1
13
23 22 21 20 19 18 17 16 15 14
OE
1
OE
2
D0D1D2D3D4D5D6D7D8D
9
O
0
O1O2O3O4O5O6O7O8O
9
F828
2 3 4 5 6 7 8 9 10 11
1
13
23 22 21 20 19 18 17 16 15 14
4-262
FAST AND LS TTL DATA
MC54/74F827 • MC54/74F828
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage* 54, 74 4.5 5.0 5.5 V
Operating Ambient
54 –55 25 125
T
A
Operating Ambient
Temperature Range
74 0 25 70
°C
54 — — –12
IOHOutput Current — High
74 — — –15
mA
54 — — 48
IOLOutput Current — Low
74 — — 64
mA
FUNCTION TABLE
Inputs Outputs
O
n
OE
D
n
F827 F828
Function
L H H L Transparent
L L L H Transparent
H X Z Z High Z
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
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