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IC
MC74F175N (MOTOROLA)
SN74LS175N(TI)
TTL [).TYPE FLIP-FLOP WITH CLEAR
-
TOP VIEW-
RO CK D
0
0
0
x x
0
1
I
J
t
1
0
1
J
0
0
1
1
0
X Oo~o
SN74LS240N (Tl)
SN74S240N (Tl)
SN74ALS244BN(TI)
0
LOW
LEVEL
HIGH
LEVEL
DON°T
CARE
TTL 3-STATE SCHMITT TRIGGER INVERTER/LINE DRIVER
-TOP VIEW-
OR
74F244PC(FSC)
MC74F244N (MOTOROLA)
TTL 3-STATE SCHMITT TRIGGER BUFFER/DRIVER
-
TOP VIEW-
G 1
OR
RC
G
A~Y
G
A
0
0
t
0
I
0
1
X Hl-Z
O;LOW LEVEL
t ; HIGH LEVEL
X ; DON'T CARE
Hl-Z; HIGH IMPEDANCE
O:LOW LEVEL
1; HIGH LEVEL
X;
DON°T CARE
Hl-Z;HIGH IMPEDANCE
5-4
MC74F245N (MOTOROLA)
SN74LS245N (TQ
TTL BILATERAL SCHMITT TRIGGER BUS TRANSCEIVERS WITH 3-STATE OUTPUT
-TOP VIEW-
EN
CIR
SN74LS257BN (Tl)
SN74S257N (Tl)
EN
DIR OPERATION
0
O
B lo A
0
Alo
B
Hl-Z
O;LOW LEVEL
1; HIGH LEVEL
X;
DON'T CARE.
H1-z; HIGH IMPEDANCE
TTL 2-LINE· T0-1 ·LINE DATA SELECTOR/MULTIPLEXER
-
TOP VIEW-
CONT. IN
INH] A
0
l
0
0 J 1
I
I
x
SN74S260N (Tl)
TTL 5-INPUT POSITIVE-NOR GATE
-TOP VIEW-
ON
CHANNEL
0
1
OPEN
A
INH
I
15
0
LOW LEVEL
I
HIGH LEVEL
X
DON'T CARE
A
B C
0
£
y
0 0 0 0 0
1
x x x x
t
0
x x x
t
x
0
x
x
1
x x
0
x
t
x x x
0
t
x x x x
0
0
LOW LEVEL
HIGH t.EVEL
DON'T CARE
NWS-1510/1530/1580
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