CGS2536V Datasheet, PDF (1/8 Pages) National Semiconductor (TI) – Commercial, Industrial Quad 1 to 4 Clock Drivers

September 1995
CGS2536V
Commercial Quad 1 to 4 Clock Drivers
CGS2536TV
Industrial Quad 1 to 4 Clock Drivers
General Description
These Clock Generation and Support clock drivers are spe-
cifically designed for driving memory arrays requiring large
fanouts while operating at high speeds
This device meets the rise and fall time requirements of the
90 MHz and 100 MHz Pentium^TM procrssors
The CGS2536 I O structures are CMOS The outputs are
separated into two banks of eight One bank consists of
divide by two outputs the other straight-through buffers
Within each bank half the outputs are inverting the other
half non-inverting
The CGS2536 specification guarantees part-to-part skew
variation
Features
Y _Guaranteed
1 0 ns rise and fall times while driving 12 inches of
50X microstrip terminated with 25 pF
350 ps pin-to-pin skew (t_OSLH and t_OSHL)
Y _{650 ps part-to-part variation on positive or negative}
transition
Y _{Operates with either 3 3V or 5 0V supply}
Y _{Inputs 5V tolerant with VCC in 3 3V range}
Y _{Symmetric output current drive 24 mA IOH IOL}
Y _{Industrial temperature of} b_{40 C to} a_{85 C}
Y _{Symmetric package orientation}
Y _{Large fanout for memory driving applications}
Y _{Guaranteed 2 kV ESD protection}
Y _{Implemented on National’s ABT family process}
Y _{28-pin PLCC for optimum skew performance}
Connection Diagrams
Pin Assignment for 28-Pin PLCC
Truth Table
Input
In 0
In 1
In 2
In 3
Output
ABCD Out (0) d 2
ABCD Out (1) d 2
ABCD Out (2)
ABCD Out (3)
PentiumTM is a trademark of Intel Corporation
C1995 National Semiconductor Corporation TL F 12325
TL F 12325 – 1
CGS2536
TL F 12325 – 2
RRD-B30M105 Printed in U S A