Satya's list of important ICs, functions, etc.

Compiled in 2000 for my electronics engineering course. Errors may exist.

Comparison of digital logic families (Important for Electronics DIC paper (sem5))

* = Mentioned in Sem5 DIC University paper Dec1996-98, one star for each hit.

Basic gates:
7400	Quad 2 input NAND gates
7402	Quad 2 input NOR gates
7404	Hex invertors
7408	Quad 2 input AND gates
7410	Triple 3 input NAND gates
7411	Triple 3 input AND gates
7432	Quad 2 input OR gates
7486	Quad 2 input XOR gates

Miscellaneous:
741	Op amp
* 7483	4bit binary adder
*** 7485	4 bit comparator with cascading inputs
*** 74180	8 bit parity checker/generator
***** 74181	4 bit ALU
** 74182	Look ahead carry generator

Multiplexers, demux, encoders, decoders:
74138	Demux 1:8 (3:8 dec)	active low o/p
74139	Mux 1:4 (2:4 dec) (Dual)	active low o/p
** 74150	Mux 16:1	active low o/p
74151	Mux 8:1
74152	Mux 8:1	active low o/p
74153	Mux 4:1 (Dual)	active high o/p
74154	Demux 1:16 (4:16 dec)	active low o/p
74155	Demux 1:4 (dec 4:16) (Dual)	1Y inverted, 2Y same
74156	Demux 1:4 (dec 4:16) (Dual)	1Y inverted, 2Y same, open collector
74157	Mux 2:1 (Quad)
74158	Mux 2:1 (Quad)	active low o/p
74159	Demux 1:16 (4:16 dec)	open collector
74352	Mux 4:1 (Dual)	active low o/p

Convertors
* 7442	BCD to decimal decoder
*** 7447	BCD to 7 segment decoder/driver
***** 74147	priority encoder decimal to BCD (active low ip/op)
* 74148	priority encoder octal to binary (EI,EO is active low)
* 74184	BCD to binary (active low enable)
** 74185	binary to BCD (active low enable)

Counters and registers
* 7490	Asynch BCD counter	Set, Reset, Mod2,Mod5
*** 7492	Asynch div-by-12 counter	Reset, Mod2,Mod6
* 7493	Asynch 4bit bin counter	Reset, Mod2,Mod8
*** 74190	Synch BCD counter	Group C
74191	Synch 4-bit bin counter	Group C
**** 7217
*** 74194	4bit bi shift reg (universal)

Microprocessors and interfacing: From the 8085 textbook by Borole and Vibhute
8085	8 bit microprocessor
8155/6	Multifunction Device (memory+IO)
8255	Programmable Peripheral Interface
8259	Programmable Interrupt Controller
8355/8755	Multifunction Device (memory+IO)
8086	16 bit microprocessor

7400: Quad 2 input NAND gates

        _________
 I11  1|   \_/   |14   Vcc
 I12  2|         |13   I31
 O1   3|    7    |12   I32
 I21  4|    4    |11   O3
 I22  5|    0    |10   I41
 O2   6|    0    |9    I42
 GND  7|_________|8    O4

I=input, O=output, first subscript=gate number, second subscript=input number

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7402: Quad 2 input NOR gates

Pinout:

        _________
 O1   1|   \_/   |14   Vcc
 I11  2|         |13   O3
 I12  3|    7    |12   I32
 O2   6|    4    |9    I31
 I22  4|    0    |11   O4
 I21  5|    2    |10   I42
 GND  7|_________|8    I41

I=input, O=output, first subscript=gate number, second subscript=input number

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74180: 8 bit parity generator/checker

Quick reference:

Parity of (inputs + even cascade + even output) = EVEN
Parity of (inputs + odd cascade + odd output) = EVEN

i.e. the output is such that the parity as shown above is maintained even.

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74190: Synch BCD counter

(74191: 4-bit bin instead of BCD)

L	ENAB	D/U-bar	CK
X	0	X	X	Stop count
0	0	X	X	Preset
1	0	0	Rising	Up Count
1	0	1	Rising	Down Count

MAX/MIN: Normally 0. Goes high when count is maximum (UP count) or minimum (DN count)
RC: Normally 1, goes 0 when MAX/MIN is reached and CK is low.

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