datasheets for 82S21 - Signetics 32x2 SRAM?

[Tony Duell]

> 
> 
> Does anyone have a datasheet for an 82S21?  I checked all the obvious
> places but can't find one.
> 
> 82S21 - Signetics 32x2 SRAM

The best I can find is a pinout, and the following description : Open 
Collector Outputs, 50ns access time, 130mA supply current. You already 
know it's 32*2 bits, TTL.

Here's the pinout. I have no idea what some of the signals are for (does 
it, for example, have separate write-enable inputs for the 2 bits?), but 
it may be better than nothing.

1 : WE/
2 : WS(0)/
3 : DI(0)
4 : A(4)
5 : CE
6 : Strobe
7 : DO(0)
8 : Ground
9 : DO(1)
10 : A(3)
11 : A(2)
12 : A(1)
13 : A(0)
14 : DI(1)
15 : WS(1)
16 : Vcc

The NatSemi DM86S21 might be an equivalent, I can find no 
cross-references to it in other memory databooks, though.

-tony