常用数字集成电路引脚图
VCC2SA02D32D22D12D02Q161514131211109
74LS253123456781SA11D31D21D11D01QGND
VCC
f
g
a
b
c
d
e
161514131211109
74LS47
12345678
BCLTBIRBORBIDAGND
1
fVCC2Rd2D2CP2Sd2Q2Q
14131211109874LS74
1234567
1Rd1D1CP1Sd1Q1QGND
VCC1Rd2Rd2CP2K2J2Sd2Q
16151413121110974LS112
12345678
1CP1K1J1Sd1Q1Q2QGND
2
f74LS51双与或非门
74LS112双JK下降沿触发器
74LS126三态缓冲器
3
f
2468
1A11Y11A21Y21A31Y31A41Y4
18161412
11131517
2A12Y12A22Y22A32Y32A42Y4
9753
119
1G2G
74LS240
2468
1A11Y11A21Y21A31Y31A41Y4
18161412
11131517
2A12Y12A22Y22A32Y32A42Y4
9753
119
1G2G
74LS244
23456789
A0B0A1B1A2B2A3B3A4B4A5B5A6B6A7B7
1817161514131211
191
EDIR
74LS245
347813141718
D1Q1D2Q2D3Q3D4Q4D5Q5D6Q6D7Q7D8Q8
256912151619
111
CLKCLR
74LS273
347813141718
D0Q0D1Q1D2Q2D3Q3D4Q4D5Q5D6Q6D7Q7
256912151619
111
OELE
74LS373
347813141718
D0Q0D1Q1D2Q2D3Q3D4Q4D5Q5D6Q6D7Q7
256912151619
111
OECLK
74LS374
1011
168
CLKQ1Q2
RSTQ3Q4Q5
VCCQ6Q7
GNDQ8Q9Q10Q11Q12
9765324131214151
4040
3433323130292827
D0D1D2D3D4D5D6D7
53698356
RDWRA0A1RESETCS
7GND26VCC
PA0PA1PA2PA3PA4PA5PA6PA7PB0PB1PB2PB3PB4PB5PB6PB7PC0PC1PC2PC3PC4PC5PC6PC7
43214039383718192021222324251415161713121110
8255
191817167611
1213
53120
25241415
98
DREQ0DREQ1DREQ2DREQ3HACKREADYCS
CLKRESET
VCCVCCVSS
DACK0DACK1DACK2DACK3
AENADSTB
A0A1A2A3A4A5A6A7D0D1D2D3D4D5D6D7HREQEOPIORIOWMEMRMEMW
3233343537383940302928272623222110361234
8237
27262524
12131415161718194204022101121
OUTA0OUTA1OUTA2OUTA3
DB0DB1DB2DB3DB4DB5DB6DB7IRQGNDVCCCSRDWRA0
OUTB0OUTB1OUTB2OUTB3
BDSL0SL1SL2SL3RL0RL1RL2RL3RL4RL5RL6RL7SHIFTCNTLSCLKRESET
3130292823323334353839125678363739
8279
1234567828272620401213142535
1617
D0D1D2D3D4D5D6D7A0A1A2GNDVCCCS0CS1CS2ADSMR
XTAL1XTAL2
SINSOUTBAUDOURCLK
RTSCTSDTRDSRRSLD
RIOUT1OUT2
DISTRDISTRDOSTRDOSTRDDISCSOUTINTRPT
1011159
3236333738393431
22211918232430
8250
26IN0
27IN1
28IN2
1IN3
2IN4
3IN5
4IN6
5IN7
16121311
refrefGNDVCC
msb21222324252627
lsb28
212019188151417
EOC7
ADDAADDBADDC
252423
ALE22
ENABLESTARTCLOCK
9610
ADC0809
109876543252421232
2227
A0
D0
A1
D1
A2
D2
A3
D3
A4
D4
A5
D5
A6
D6
A7
D7
A8
A9
CS2
A10CS1
A11
A12VCC
GND
OE
WE
1112131516171819
2620
2814
6264
2728125678111310122r