EEDRAW-LIB Version 1.0
#
# 74 LS TTL library - third part
#
#				Gershon Elber Nov 89
#

#
# 74LS221
#
DEF 74LS221 IC 16 10 1 0
PINS
1A
1B
1Clr
~1Q
2Q
2Cext
2RCext
Gnd
2A
2B
2Clr
~2Q
1Q
1Cext
1RCext
Vcc
ENDPINS
ENDDEF

#
# 74LS240
#
DEF 74LS240 IC 20 10 1 1 20
PINS
~E1
I0
O1
I2
O3
I4
O5
I6
O7
Gnd
I7
O6
I5
O4
I3
O2
I1
O0
~E2
Vcc
ENDPINS
DRAW
S -11 -17 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9 
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -12 -19 -12
L -11 -15 -19 -15
L 11 15 19 15 I
L 11 12 19 12 I
L 11 9 19 9 I
L 11 6 19 6 I
L 11 3 19 3 I
L 11 0 19 0 I
L 11 -3 19 -3 I
L 11 -6 19 -6 I
L 0 -17 0 -25
L 0 17 0 25
ENDDRAW
MULTI
2 17 4 15 6 13 8 11 1 19 18 3 16 5 14 7 12 9 10 20
ENDMULTI
ENDDEF

#
# 74LS241
#
DEF 74LS241 IC 20 10 1 1 20
PINS
~E1
I0
O1
I2
O3
I4
O5
I6
O7
Gnd
I7
O6
I5
O4
I3
O2
I1
O0
E2
Vcc
ENDPINS
DRAW
S -11 -17 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9 
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -12 -19 -12
L -11 -15 -19 -15
L 11 15 19 15
L 11 12 19 12
L 11 9 19 9 
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 0 -17 0 -25
L 0 17 0 25
ENDDRAW
MULTI
2 17 4 15 6 13 8 11 1 19 18 3 16 5 14 7 12 9 10 20
ENDMULTI
ENDDEF

#
# 74LS242
#
DEF 74LS242 IC 14 10 1 1 12
PINS
~E1
~
A0
A1
A2
A3
Gnd
B3
B2
B1
B0
~
E2
Vcc
ENDPINS
DRAW
S -11 -11 11 11
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -6 -19 -6 I
L -11 -9 -19 -9
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 0 -11 0 -19
L 0 11 0 19
ENDDRAW
MULTI
3 4 5 6 1 13 11 10 9 8 7 14
ENDMULTI
ENDDEF

#
# 74LS243
#
DEF 74LS243 IC 14 10 1 1 12
PINS
~E1
~
A0
A1
A2
A3
Gnd
B3
B2
B1
B0
~E2
~
Vcc
ENDPINS
DRAW
S -11 -11 11 11
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -6 -19 -6 I
L -11 -9 -19 -9
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 0 -11 0 -19
L 0 11 0 19
ENDDRAW
MULTI
3 4 5 6 1 13 11 10 9 8 7 14
ENDMULTI
ENDDEF

#
# 74LS244
#
DEF 74LS244 IC 20 10 1 1 20
PINS
~E1
I0
O1
I2
O3
I4
O5
I6
O7
Gnd
I7
O6
I5
O4
I3
O2
I1
O0
~E2
Vcc
ENDPINS
DRAW
S -11 -17 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9 
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -12 -19 -12
L -11 -15 -19 -15
L 11 15 19 15
L 11 12 19 12
L 11 9 19 9 
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 0 -17 0 -25
L 0 17 0 25
ENDDRAW
MULTI
2 17 4 15 6 13 8 11 1 19 18 3 16 5 14 7 12 9 10 20
ENDMULTI
ENDDEF

#
# 74LS245
#
DEF 74LS245 IC 20 10 1 1 20
PINS
Dr
A0
A1
A2
A3
A4
A5
A6
A7
Gnd
B7
B6
B5
B4
B3
B2
B1
B0
~E
Vcc
ENDPINS
DRAW
S -11 -17 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9 
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -12 -19 -12
L -11 -15 -19 -15 I
L 11 15 19 15
L 11 12 19 12
L 11 9 19 9 
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 0 -17 0 -25
L 0 17 0 25
ENDDRAW
MULTI
2 3 4 5 6 7 8 9 1 19 18 17 16 15 14 13 12 11 10 20
ENDMULTI
ENDDEF

#
# 74LS247
#
DEF 74LS247 IC 16 10 1 1 16
PINS
B
C
Lt
Rbo
Rbi
D
A
Gnd
e
d
c
b
a
g
f
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3 I
L -11 -9 -19 -9 I
L -11 -12 -19 -12 I
L 11 9 19 9 I
L 11 6 19 6 I
L 11 3 19 3 I
L 11 0 19 0 I
L 11 -3 19 -3 I
L 11 -6 19 -6 I
L 11 -9 19 -9 I
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
7 1 2 6 3 4 5 13 12 11 10 9 14 15 8 16 
ENDMULTI
ENDDEF

#
# 74LS248
#
DEF 74LS248 IC 16 10 1 1 16
PINS
B
C
Lt
Rbo
Rbi
D
A
Gnd
e
d
c
b
a
g
f
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3 I
L -11 -9 -19 -9 I
L -11 -12 -19 -12 I
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 11 -9 19 -9
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
7 1 2 6 3 4 5 13 12 11 10 9 14 15 8 16 
ENDMULTI
ENDDEF

#
# 74LS249
#
DEF 74LS249 IC 16 10 1 1 16
PINS
B
C
Lt
Rbo
Rbi
D
A
Gnd
e
d
c
b
a
g
f
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3 I
L -11 -9 -19 -9 I
L -11 -12 -19 -12 I
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 11 -9 19 -9
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
7 1 2 6 3 4 5 13 12 11 10 9 14 15 8 16 
ENDMULTI
ENDDEF

#
# 74LS251
#
DEF 74LS251 IC 16 10 1 1 16
PINS
I3
I2
I1
I0
Z
~Z
~E0
Gnd
S2
S1
S0
I7
I6
I5
I4
Vcc
ENDPINS
DRAW
S -11 -11 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9
L 11 12 19 12
L 11 9 19 9 I
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -9 19 -9 I
L 0 -11 0 -19
L 0 14 0 22
ENDDRAW
MULTI
4 3 2 1 15 14 13 12 5 6 11 10 9 7 8 16
ENDMULTI
ENDDEF

#
# 74LS253
#
DEF 74LS253 IC 16 10 1 1 16
PINS
~E0a
S1
I3a
I2a
I1a
I0a
Za
Gnd
Zb
I0b
I1b
I2b
I3b
S0
~E0b
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9 
L -11 -12 -19 -12
L 11 12 19 12
L 11 9 19 9
L 11 3 19 3 I
L 11 0 19 0 I
L 11 -6 19 -6
L 11 -9 19 -9
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
6 5 4 3 10 11 12 13 7 9 1 15 2 14 8 16
ENDMULTI
ENDDEF

#
# 74LS256
#
DEF 74LS256 IC 16 10 1 1 16
PINS
A0
A1
Da
Q0a
Q1a
Q2a
Q3a
Gnd
Q0b
Q1b
Q2b
Q3b
Db
E
~Cl
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3 I
L -11 -6 -19 -6 I
L -11 -12 -19 -12
L 11 12 19 12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 -3 19 -3
L 11 -6 19 -6
L 11 -9 19 -9
L 11 -12 19 -12
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
3 1 2 15 14 13 4 5 6 7 9 10 11 12 8 16
ENDMULTI
ENDDEF

#
# 74LS257
#
DEF 74LS257 IC 16 10 1 1 16
DRAW
S -11 -11 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9
L 11 12 19 12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 -6 19 -6
L 11 -9 19 -9
L 0 -11 0 -19
L 0 14 0 22
ENDDRAW
MULTI
2 3 5 6 11 10 14 13 4 7 9 12 1 15 8 16
ENDMULTI
PINS
S
I0a
I1a
Za
I0b
I1b
Zb
Gnd
Zd
I1d
I0d
Zc
I1c
I0c
~E0
Vcc
ENDPINS
ENDDEF

#
# 74LS258
#
DEF 74LS258 IC 16 10 1 0   
PINS
S
I0a
I1a
~Za
I0b
I1b
~Zb
Gnd
~Zd
I1d
I0d
~Zc
I1c
I0c
~E0
Vcc
ENDPINS
ENDDEF

#
# 74LS259
#
DEF 74LS259 IC 16 10 1 1 16
PINS
A0
A1
A2
Q0
Q1
Q2
Q3
Gnd
Q4
Q5
Q6
Q7
D
~E
~C
Vcc
ENDPINS
DRAW
S -11 -11 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 0 -19 0 I
L -11 -6 -19 -6
L -11 -9 -19 -9 I
L 11 12 19 12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 11 -9 19 -9
L 0 -11 0 -19
L 0 14 0 22
ENDDRAW
MULTI
1 2 3 15 13 14 4 5 6 7 9 10 11 12 8 16
ENDMULTI
ENDDEF

#
# 74LS273
#
DEF 74LS273 IC 20 10 1 1 20
PINS
~Mr
Q0
D0
D1
Q1
Q2
D2
D3
Q3
Gnd
Cp
Q4
D4
D5
Q5
Q6
D6
D7
Q7
Vcc
ENDPINS
DRAW
S -11 -17 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -12 -19 -12 I
L -11 -15 -19 -15
L 11 15 19 15
L 11 12 19 12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 0 -17 0 -25
L 0 17 0 25
ENDDRAW
MULTI
3 4 7 8 13 14 17 18 1 11 2 5 6 9 12 15 16 19 10 20
ENDMULTI
ENDDEF

#
# 74LS279
#
DEF 74LS279 IC 16 10 1 0
PINS
~R
~S1
~S2
Q
~R
~S1
Q
Gnd
Q
R
~S1
~S1
Q
~R
~S1
Vcc
ENDPINS
ENDDEF

#
# 74LS280
#
DEF 74LS280 IC 14 10 1 1 13
PINS
G
H
~
I
Oeven
Oodd
Gnd
A
B
C
D
E
F
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9
L -11 -12 -19 -12
L 11 3 19 3
L 11 -3 19 -3
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
8 9 10 11 12 13 1 2 4 5 6 7 14
ENDMULTI
ENDDEF

#
# 74LS283
#
DEF 74LS283 IC 16 10 1 1 16
PINS
S2
B2
A2
S1
A1
B1
C0
Gnd
C4
S4
B4
A4
S3
A3
B3
Vcc
ENDPINS
DRAW
S -11 -17 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9
L -11 -15 -19 -15
L 11 12 19 12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 -6 19 -6
L 0 -17 0 -25
L 0 17 0 25
ENDDRAW
MULTI
5 3 14 12 6 2 15 11 7 4 1 13 10 9 8 16
ENDMULTI
ENDDEF

#
# 74LS290
#
DEF 74LS290 IC 14 10 1 1 12
PINS
Ms1
~
Ms2
Q2
Q1
~
Gnd
Q3
Q0
~Cp0
~Cp1
Mr1
Mr2
Vcc
ENDPINS
DRAW
S -11 -11 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 3 -19 3
L -11 0 -19 0
L -11 -6 -19 -6 I
L -11 -9 -19 -9 I
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 0 -11 0 -19
L 0 14 0 22
ENDDRAW
MULTI
1 3 12 13 10 11 9 5 4 8 7 14
ENDMULTI
ENDDEF

#
# 74LS293
#
DEF 74LS293 IC 14 10 1 1 10
PINS
~
~
~
Q2
Q1
~
Gnd
Q3
Q0
~Cp0
~Cp1
Mr1
Mr2
Vcc
ENDPINS
DRAW
S -11 -8 11 8
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3 I
L -11 -6 -19 -6 I
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 0 -8 0 -16
L 0 8 0 16
ENDDRAW
MULTI
12 13 10 11 9 5 4 8 7 14
ENDMULTI
ENDDEF

#
# 74LS295
#
DEF 74LS295 IC 14 10 1 1 14
PINS
Ds
P0
P1
P2
P3
Pe
Gnd
Eo
~Cp
Q3
Q2
Q1
Q0
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9 I
L -11 -12 -19 -12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
2 3 4 5 6 1 9 8 13 12 11 10 7 14
ENDMULTI
ENDDEF

#
# 74LS298
#
DEF 74LS298 IC 16 10 1 1 16
PINS
I1b
I1a
I0a
I0b
I1c
I1d
I0d
Gnd
I0c
S
~Cp
Qd
Qc
Qb
Qa
Vcc
ENDPINS
DRAW
S -11 -14 11 14
L -11 12 -19 12
L -11 9 -19 9
L -11 6 -19 6
L -11 3 -19 3
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9
L -11 -12 -19 -12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -6 19 -6
L 11 -12 19 -12 I
L 0 -14 0 -22
L 0 14 0 22
ENDDRAW
MULTI
3 4 9 7 2 1 5 6 15 14 13 12 10 11 8 16
ENDMULTI
ENDDEF

#
# 74LS299
#
DEF 74LS299 IC 20 10 1 1 20
PINS
S0
~OE1
~OE2
IO6
IO4
IO2
IO0
Q0
~Mr
Gnd
Ds0
Cp
IO1
IO3
IO5
IO7
Q7
Ds7
S1
Vcc
ENDPINS
DRAW
S -11 -14 11 17
L -11 15 -19 15
L -11 12 -19 12
L -11 9 -19 9 I
L -11 6 -19 6 I
L -11 3 -19 3
L -11 0 -19 0
L -11 -3 -19 -3
L -11 -6 -19 -6
L -11 -9 -19 -9
L -11 -12 -19 -12 I
L 11 12 19 12
L 11 9 19 9
L 11 6 19 6
L 11 3 19 3
L 11 0 19 0
L 11 -3 19 -3
L 11 -6 19 -6
L 11 -9 19 -9
L 0 -14 0 -22
L 0 17 0 25
ENDDRAW
MULTI
11 18 2 3 1 19 12 8 17 9 7 13 6 14 5 15 4 16 10 20
ENDMULTI
ENDDEF