DESCRIPTION
The TC514258P/J/Z is the new generation dynamic
RAM organized 262,144 words by 4 bits. The TC514258
P/J/Z utilizes TOSHIBA's CMOS Silicon gate process
technology as well as advanced circuit techniques to
provide wide operating margins, both internally and to
the system user. Multiplexed address inputs permit the
TC514258P/J/Z to be packaged in a standard 20 pin
plastic DIP and 20/26 pin plastic SOJ and 20/19 pin
plastic ZIP. The package size provides high system bit
densities and is compatible with widely available
automated testing and insertion equipment. System.
oriented features include single power supply of 5V ±
10% tolerance, direct interfacing capability with high
performance logic families such as Schottky TTL.

FEATURES
262,144 word by 4 bit organization
Fast access time and cycle time
TRAC
TAA
ICAC
TRC
tsc
RAS Access Time
Column Address Access
Time
CS Access Time
Cycle Time
Static Column Mode
Cycle Time
TC514258P/J/Z-85-10-12
100ns
50ns
30ns
190ns
55ns
85ns
45ns
30ns
165ns
50ns
120ns
60ns
35ns
220ns
65ns
Single power supply of 5V ± 10% with a built-in VBB
generator
• Low Power
413mW MAX. Operating (TC514258P/J/Z-85)
358mW MAX. Operating (TC514258P/J/Z-10)
303mW MAX. Operating (TC514258P/J/Z-12)
5.5mW MAX. Standby
Outputs unlatched at cycle end allows two-dimensional
chip selection
Read-Modify-Write, CS before RAS refresh, RAS-only
refresh, Hidden refresh and Static Column Mode capa-
bility
All inputs and outputs TTL complatible
512 refresh cycles/8ms
Package Plastic DIP
TC514258P
Plastic SOJ
TC514258J
Plastic ZIP TC514258Z