Logic Diagram
33
1A
1B
QUADRUPLE 2-INPUT
POSITIVE-NOR BUFFERS
WITH OPEN-COLLECTOR
OUTPUTS
1Y
2Y
3Y
4Y
2A
2B
3A
3B
● Y = A + B
4A
4B
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
PARAMETER
MAX or MIN
TTL
LS
ALS UNIT
I
CC
MAX
MAX
MAX
16.5
5.5
48
13.8
5.5
24
9
mA
V
V
OH
5.5
24
IOL
mA
SWITCHING CHARACTERISTICS
PARAMETER
INPUT
OUTPUT
MAX or MIN
TTL
LS
ALS
t
PLH
A or B
A or B
Y
Y
MAX
MAX
15
18
32
28
33
12
tPHL
UNIT: ns
Logic Diagram
34
HEX BUFFER GATE
A
Y
● Y = A
FUNCTION TABLE
(each gate)
INPUT
A
OUTPUT
Y
H
L
H
L
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
AUC
1.8V
AUC
2.5V
PARAMETER
MAX or MIN
UNIT
ICC
IOH
IOL
MAX
MAX
MAX
0.01
-8
0.01
-9
mA
mA
mA
8
9
SWITCHING CHARACTERISTICS
PARAMETER INPUT
AUC
AUC
OUTPUT
Y
MAX or MIN
MAX
1.8V
2.5V
tPLH
tPHL
2.4
2.4
1.8
1.8
A
UNIT: ns
250
: OBSOLETED or NOT RECOMMENDED NEW DESIGNS
TI [ TEXAS INSTRUMENTS ]
