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- Date: Tuesday, 27 August 1985
- From: Ken Turkowski <ken%turtlevax.uucp>
- To: net.micro
- Re: FIFO chips
-
- In article <5904@utzoo.UUCP> henry@utzoo.UUCP (Henry Spencer) writes:
- >I'm seeking a particular variety of IC that I can't find in my own
- >databook collection (which is substantial but by no means complete).
- >What I want is a FIFO, at least 16x8, +5 only, with tri-state outputs.
- >No single-source chips need apply. It doesn't need to be terribly fast.
- >Extra capacity is welcome but not very important. In a pinch I'd be
- >willing to put a pair of compact ...x4 chips side-by-side, but the tri-state
- >outputs and the single power supply are necessary.
- >
- >I've got some leads, but nothing at all definite. I'd like to hear
- >about anything that might be suitable. More specifically... Is there
- >a second source for TRW's 1030? Is the Z8060 a real part (my Zilog
- >databook is kind of old) with a second source? Does the number "2812"
- >ring a bell, and if so, who makes it?
-
- No, no one else makes the TRW 1030. The Z8060 is a real part but
- slo-ooow (over a microsecond cycle time). 2812 sort of sounds like an
- Intel number.
-
- After years of domination of the FIFO market by MMI with their dinky
- 64x4 and 64x5 bubble-through FIFO's, the market has finally stabilized
- on an good FIFO architecture with good performance:
-
- Mostek 4501 512x9 200, 150, 120, 80 ns access time
-
- IDT 7201 512x9 120, 80, 65, 50 ns
- 7202 1024x9 120, 80, 65, 50 ns
-
-
- For reference the MMI parts are the 67401 (64x4) and 67402 (64x5),
- with similar parts made by Cypress, Fairchild, and National. TI's got
- some 16x4 and 16x5's (74LS222, 224, 227, 228, 74S225), but they are
- small.
-
- Here's some prices, current as of about April of 1984 (slightly old):
-
- SPEED PRICE
- DEPTH WIDTH CYCLE MFR PART (100) (500) (1000)
-
- 16 4 125ns RCA CB40105BE
- 16 4 100ns Fairchild 74F403
- 16 4 100ns Signetics N9403
- 16 4 84ns TI SN74LS222 - - 10.00
- 16 4 84ns TI SN74LS224 - - 8.57
- 16 4 50ns TI SN74LS227 - - 10.00
- 16 4 50ns TI SN74LS228 - - 8.57
- 16 5 100ns TI SN74S225 7.00 5.00 4.70
- 64 4 100ns Fairchild 74F43
- 64 4 100ns Fairchild 74F433
- 64 4 100ns MMI C67401 29.95 29.95
- 64 4 100ns National DM87S401
- 64 4 100ns National DM87S401A
- 64 4 67ns MMI C67401A 31.01 31.01
- 64 4 60ns MMI C67401B 35.33 35.33
- 64 4 125ns Fairchild 9423C
- 64 5 100ns MMI C67402 26.19 26.19
- 64 5 100ns National DM87S402
- 64 5 67ns MMI C67402A 38.76 38.76
- 64 5 67ns National DM87S402A
- 64 5 60ns MMI C67402B 43.34 43.34
- 64 5 29ns MMI C67413A 50.00
- 64 9 67ns TRW TDC1030 75.00?
- 256 8 205ns TI TMS9650 ?
- 512 9 228ns Mostek 4501-20 27.50 26.00 17.07 stock
- 512 9 175ns Mostek 4501-15 30.00 27.50 17.27 stock
- 512 9 140ns Mostek 4501-12 31.00 29.50 20.12 1Q85
- 512 9 - Mostek 4501-10 - - - 15.40 10K December
- 512 9 - Mostek 4501-8 - - - -
- 64-4K - 125ns Signetics 8X60 20.50 20.50 FIFO RAM controller
-
-
-
- A related product is the dual-port RAM:
-
- Synertek SY2130 1024x8 100 ns
- SY2131 1024x8 100 ns
- SY2132 512x8 100 ns
- SY2133 512x8 100 ns
-
- IDT 7130 1024x8 120, 100, 90 ns
- 7132 2024x8 120, 100, 90 ns
- --
- Ken Turkowski @ CADLINC, Menlo Park, CA
- UUCP: {amd,decwrl,hplabs,seismo,spar}!turtlevax!ken
-