HM62864 datasheet(7/15 Pages) ETC

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HM62864 Series

AC Characteristics (Ta = 0 to +70

°C, V

CC = 5 V ± 10%, unless otherwise noted.)

Test Conditions

• Input pulse levels: 0.8 V to 2.4 V

• Input rise and fall time: 5 ns

• Input and output timing reference levels: 1.5 V

• Output load: HM62864-5: 1 TTL + 30 pF (Including scope & jig)

HM62864-7/8: 1 TTL + 100 pF (Including scope & jig)

Read Cycle

HM62864-5

HM62864-7

HM62864-8

Parameter

Symbol Min

Max

Min

Max

Min

Max

Unit

Notes

Read cycle time

—

Address access time

—

Chip select access time

CS1

CO1

—

CS2

CO2

—

Output enable to output valid

—

Chip selection to output in

CS1

LZ1

—

low-Z

CS2

LZ2

—

Output enable to output in

low-Z

OLZ

—

Chip deselection in output in

CS1

HZ1

1, 2

high-Z

CS2

HZ2

1, 2

Output disable to output in

high-Z

OHZ

1, 2

Output hold from address

change

—

Notes: 1. t

HZ and t OHZ are defined as the time at which the outputs achieve the open circuit conditions and

are not referred to output voltage levels.

2. This parameter is sampled and not 100% tested.

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