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SN74ACT2228DW Folha de dados(PDF) 8 Page - Texas Instruments

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Nome de Peças SN74ACT2228DW
Descrição Electrónicos  DUAL 64 횞 1, DUAL 256 횞 1 CLOCKED FIRST-IN, FIRST-OUT MEMORIES
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

SN74ACT2228DW Folha de dados(HTML) 8 Page - Texas Instruments

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SN74ACT2226, SN74ACT2228
DUAL 64
× 1, DUAL 256 × 1
CLOCKED FIRST-IN, FIRST-OUT MEMORIES
SCAS219C – JUNE 1992 – REVISED OCTOBER 1997
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1)
–0.5 V to VCC + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO (see Note 1)
–0.5 V to VCC + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0 or VI > VCC)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0 or VO > VCC)
±50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, IO (VO = 0 to VCC)
±50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND
±200 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2)
81
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output voltage ratings may be exceeded provided that the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
Q outputs, flags
–8
mA
IOL
Low level output current
Q outputs
16
mA
IOL
Low-level output current
Flags
8
mA
TA
Operating free-air temperature
–40
85
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP‡
MAX
UNIT
VOH
VCC = 4.5 V,
IOH = –8 mA
2.4
V
VOL
Flags
VCC = 4.5 V,
IOL = 8 mA
0.5
V
VOL
Q outputs
VCC = 4.5 V,
IOL = 16 mA
0.5
V
II
VCC = 5.5 V,
VI = VCC or 0
±5
µA
IOZ
VCC = 5.5 V,
VO = VCC or 0
±5
µA
ICC
VI = VCC – 0.2 V or 0
400
µA
∆ICC§
VCC = 5.5 V,
One input at 3.4 V,
Other inputs at VCC or GND
1
mA
Ci
VI = 0,
f = 1 MHz
4
pF
Co
VO = 0,
f = 1 MHz
8
pF
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ This is the supply current when each input is at one of the specified TTL voltage levels rather than 0 V or VCC.


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