TTL(Transistor Transistor Logic) - PowerPoint PPT Presentation

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TTL(Transistor Transistor Logic)

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Title: TTL(Transistor Transistor Logic)


1
TTL(Transistor Transistor Logic)
???????
2
???????
TTL? ??
TTL(Transistor-Transistor logic)??? ??????? ????
?? ??? ?? ???, ??? ?????? ?????, ?? ?? ??????
??? ???.
3
TTL? ??
???????
  • ?? ?? ??, ?? ??, ????? ???.
  • ? ??(fan-out)? ?? ????
  • ?? ????? ?? ?? ?? ??? ???? ?? ???.
  • ?? ??? ??? LS-TTL??? ??
  • ?? ??? ?? ????? ???? ??
  • DTL? ??? ? ??
  • ?? ???? ?? ??? ??? ?? ???.
  • ?? ??? ?? -?????? 9.5ns, ?? ?? ?? 2mW

4
??, ??? ?? ?? ??
???????
  • Clock?? Gate? ?? ?? ??? ??.1? ??.

?? 1
5
TTL? ??(1)
???????
  • TTL? ??? ? Maker? ?? ?? ??? ???, Pin Lay-Out?
    ???? 8 pin, 14 pin,16 pin, 20 pin, 24 pin, 28
    pin? ???? ??.pin? pin ??? 2.54?? ?? ??? 24 pin?
    ??? ?? 24 pin ??? 7.62 ?(24S), 24 pin ??? ??
    15.24 ?(24W)???, ???? ??? ??? 24 pin? 7.62 ?
    Package? ??. 74800??? 24 pin Wide type?
    Slim-type?? ??? ?? ??.

6
TTL? ??(2)
???????
  • Package? Ceramic? Plastik? ??? ????? Ceramic? ??
    ?? ??? ?? ????? ???? ?? ??. Ceramic Package?
    ?????, ?? ??? ?? ??? ?? ???. IC? ?? ??? ???? ????
    ??? ? ??? ?? 1? pin?? ???? ??????? ??? ?????. IC
    ??? ?? ?????? ???? ???? ??? ??.2? ?? 1? pin ???
    ???marking(Orientation Mark)? ??.

7
TTL? ??(3)
???????
  • ?? 2. TTL? ??

8
Transistor? ??(1)
???????
  • IC? ??? ?? ?? ?? ??? Parameter? ??? ??? ??? ?? ?
    ?? ??? ??? ?????? ???.
  • tpd (Propagation Delay Time) ?????? ?? ???, ???
    ??? ??? ???? ????. ??? ??? ??, H?L, L?H, ?? ??
    ??? ?? ??? ??? ??,  ??. 3??? ?? ?? ???? ??? ??
    ?. 1? ?? ??.H?L, L?H? ?? ??? ?? ??? ???  H?L,
    L?H? ?? ?? ?? ??? ?? ?? ???. H?Z, Z?H, L?Z, Z?L?
    ??? ??? 3 State ??? ??? ON-OFF? Speed? ???? ??.

9
???????
Transistor? ??(2)
??. 3 tpd ? ????
10
???????
Transistor? ??(3)
?. 1 tpd ?? 3? ????? ?? ?? ??
11
???????
Transistor? ??(4)
  • tw (Pulse Width) ??/??? ???? Threshold ??(N, S
    1.5V, LS 1.3V)? ???? (??Interrupt)??? ?? ??
    ??? ?? ??. ????? ?? ??? ?????, ????? Load ??
    Clear, Preset ??, Trigger ??, Clock ?? ?? ?? ??
    ?? ???? ? ????.
  • fmax (Maximum Clock Frequency) ?? ?? ????
    Counter? Shift Register, Clock Oscillator, VCO ??
    ???? ??? ???? ?? H, L? ?? 1?, Duty? 50? ????
    Test? ???.
  • th (Hold Time) Hold ??, ??. 4? ?? 1?? ???
    data? ??? ??? ?? ??? ?? ? ?, clock?? Set ??? ?? ?
    Data? ?? ?? ?? ????? ?? ??? ???. ?? ???? 0?? ??
    ?? ?? ? ??.

12
???????
Transistor? ??(5)
??. 4 Setup? Hold
13
???????
Transistor? ??(6)
  • tsu (Setup Time) Set Up ??, th? ??? Clock emd?
    ???? ?? ?? ?? Data? ?????? ??? ??? ????.
  • trelease (Release Time) Clock ?? ??? ?? ??
    Data? ???? ?? ??. ??. 5? ?? ?? Hold ????? ????.

14
???????
Transistor? ??(7)
??. 5 Release ??
??? 3?? ??? Flip-Flop?? Register? Set ?? ? ??
Release? ???? ??? ?? ?? Data? ???? ?? ?? ?????
??. ??? Master Slave? Edge Trigger?? ?? ??? ???
??.
15
TTL? ????(1)
???????
  • ?? ??? ?????? ??? ???? ??? ???? ???? ???, ??? ??
    ??? ?? ???? ??? ???? ??. ? ??? ??? ?? TTL? ?????
    ??? ???? ???? ???. ?. 2? ????.

16
???????
TTL? ????(2)
?. 2 ????
17
TTL? ????(3)
???????
  • LS Series? ????? ? ???? DTL?(Diode Logic)??.
    TTL?(Multi Emitter Tran sister)? ?? ??? ?? ??. ??
    ?? ??? Chip? ??? ???? ???? ?? ???, ?? ??? ?? ???
    ???? ?? ? ???? ?? ??

18
TTL? ??
???????
  • TTL IC? DTL?? ???? Standard TTL, High-Speed(H)
    TTL, Low-Power(L) TTL, Schottky(S) TTL, Low-Power
    Schottky(LS) TTL? LS Series? ????, ALS, AS, F
    Series? ?????. ? Series ?, H Series?L Series?
    ??? Family? ??? ?? ???? ???. Standard ? ???????
    ?? Speed? ??? ?? LS Series? ?? ????, S Series?
    ????? ????

19
???????
???? ??
?? TTL (H ???)
74???
??? ??? TTL(LS???)
TTL
?? TTL (H ???)
??? TTL (L ???)
??? TTL (S ???)
?? ???(HC, HCT, ALS ??)
20
???????
???? ??
1. ?????
2. ????
3. D-?????
4. Sense-????
5. FA-????
6. ALU-???? ??
7. Shifter-???
8. RAM-???
9. VCO-???? ??? ???
10. Counter???(Up/Down/Preset/Reset)
11. Decoder/Incoder-???/???
12. Multiplexer/Demultiplexer
21
???????
? ????? ?
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