SN74ACT2236 datasheet(10/14 Pages) TI1

10 / 14 page

SN74ACT2236

1024 × 9 × 2

ASYNCHRONOUS BIDIRECTIONAL FIRST IN, FIRST OUT MEMORY

SCAS149A − APRIL 1990 − REVISED SEPTEMBER 1995

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

operating characteristics, VCC = 5 V, TA = 25°C

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance per 1K bits

Outputs enabled

CL = 50 pF, f = 5 MHz

Cpd

Power dissipation capacitance per 1K bits

Outputs disabled

CL = 50 pF, f = 5 MHz

TYPICAL CHARACTERISTICS

PROPAGATION DELAY TIME

LOAD CAPACITANCE

100

200

250

150

300

typ − 2

CL − Load Capacitance − pF

typ

typ + 2

typ + 4

typ + 6

typ + 8

VCC = 5 V

TA = 25°C

RL = 500 Ω

4.5

4.6

4.7 4.8

4.9

5.1 5.2

5.3

5.4

5.5

typ + 2

typ + 1

typ

typ − 1

typ − 2

POWER DISSIPATION CAPACITANCE

SUPPLY VOLTAGE

VCC − Supply Voltage − V

VCC = 5 V

fi = 5 MHz

TA = 25°C

typ − 3

Figure 2

Figure 3

calculating power dissipation

The maximum power dissipation (PT) can be calculated by:

PT = VCC × [ICC + (N × ∆ICC × dc)] + Σ(Cpd × VCC2 × fi) + Σ(CL × VCC2 × fo)

where:

ICC

= power-down ICC maximum

= number of inputs driven by a TTL device

∆ICC = increase in supply current

= duty cycle of inputs at a TTL high level of 3.4 V

Cpd

= power dissipation capacitance

= output capacitive load

= data input frequency

= data output frequency

SN74ACT2236 데이터시트(PDF) 10 Page - Texas Instruments

SN74ACT2236 데이터시트(HTML) 10 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14

데이터시트 다운로드

링크 URL