PI74FCT280T
9-BIT PARITY GENERATOR/CHECKER
2
PS2014A 03/11/96
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PI74FCT280T 14-Pin SOIC Configuration
Inputs
I
8
-I
0
Outputs
Σ
e
H
Function
Even Parity
Σ
o
L
No. of Bits at TTL High
= 0, 2, 4, 6, 8
No. of Bits at TTL High
= 1, 3, 5, 7, 9
Odd Parity
L
H
Truth Table
(1)
Note:
1.
H = High Voltage Level
L = Low Voltage Level
Pin Name
I
8
–I
0
Σ
e
Σ
o
GND
V
CC
Description
Data In
Even Parity Out
Odd Parity Out
Ground
Power
Product Pin Description
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................................. –65°C to +150°C
Ambient Temperature with Power Applied .................................-40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ..........–0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ...........–0.5V +7.0V
DC Input Voltage .........................................................................–0.5V to +7.0V
DC Output Current ................................................................................... 120 mA
Power Dissipation......................................................................................... 0.5W
Note:
Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions above those
indicated in the operational sections of this
specification is not implied. Exposure to
absolute maximum rating conditions for
extended periods may affect reliability.
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(1)
Description
Test Conditions
Typ
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
6
10
pF
C
OUT
Output Capacitance
V
OUT
= 0V
8
12
pF
Notes:
1. This parameter is determined by device characterization but is not production tested.
PI74FCT280T 16-Pin QSOP Configuration
V
CC
I
5
I
4
I
3
I
2
I
1
I
0
1
2
3
4
5
6
7
I
6
I
7
14
13
12
11
10
9
8
NC
I
8
Σ
e
Σ
o
GND
14-PIN
W14
V
CC
I
5
I
4
I
3
I
2
I
1
I
0
NC
1
2
3
4
5
6
7
I
6
I
7
16
15
14
13
12
11
10
NC
I
8
Σ
e
Σ
o
NC
8
GND
9
16-PIN
Q16