74FCT2574ATSOCTE4 Ver la hoja de datos (PDF) - Conexant Systems
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74FCT2574ATSOCTE4 Datasheet PDF : 15 Pages
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CY74FCT2374T
8-BIT REGISTER
WITH 3-STATE OUTPUTS
SCCS040A – SEPTEMBER 1994 – REVISED OCTOBER 2001
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
VIK
VCC = 4.75 V,
IIN = –18 mA
–0.7 –1.2 V
VOH
VCC = 4.75 V,
IOH = –15 mA
2.4
3.3
V
VOL
VCC = 4.75 V,
IOL = 12 mA
0.3 0.55 V
ROUT
VCC = 4.75 V,
IOL = 12 mA
20
25
40 Ω
Vhys
All inputs
0.2
V
II
VCC = 5.25 V,
VIN = VCC
5 µA
IIH
VCC = 5.25 V,
VIN = 2.7 V
±1 µA
IIL
VCC = 5.25 V,
VIN = 0.5 V
±1 µA
IOZH
VCC = 5.25 V,
VOUT = 2.7 V
10 µA
IOZL
IOS‡
VCC = 5.25 V,
VCC = 5.25 V,
VOUT = 0.5 V
VOUT = 0 V
–10 µA
–60 –120 –225 mA
Ioff
VCC = 0 V,
VOUT = 4.5 V
±1 µA
ICC
∆ICC
VCC = 5.25 V,
VIN ≤ 0.2 V,
VIN ≥ VCC – 0.2 V
VCC = 5.25 V, VIN = 3.4 V§, f1 = 0, Outputs open
0.1
0.2 mA
0.5
2 mA
ICCD¶
VCC = 5.25 V, Outputs open, One input switching at 50% duty cycle,
OE = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V
0.06
0.12
mA/
MHz
One bit switching
VIN ≤ 0.2 V or
IC#
VCC = 5.25 V,
Outputs open,
f0 = 10 MHz,
at f1 = 5 MHz
at 50% duty cycle
Eight bits switching
VIN ≥ VCC – 0.2V
VIN = 3.4 V or GND
VIN ≤ 0.2 V or
OE = GND
at f1 = 2.5 MHz
VIN ≥ VCC – 0.2 V
at 50% duty cycle
VIN = 3.4 V or GND
0.7
1.4
1.2
3.4
mA
1.6 3.2||
3.9 12.2||
Ci
5
10 pF
Co
9
12 pF
† Typical values are at VCC = 5 V, TA = 25°C.
‡ Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus
and/or sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise,
prolonged shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In
any sequence of parameter tests, IOS tests should be performed last.
§ Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND
¶ This parameter is derived for use in total power-supply calculations.
# IC = ICC + ∆ICC × DH × NT + ICCD (f0/2 + f1 × N1)
Where:
IC = Total supply current
ICC = Power-supply current with CMOS input levels
∆ICC = Power-supply current for a TTL high input (VIN = 3.4 V)
DH = Duty cycle for TTL inputs high
NT = Number of TTL inputs at DH
ICCD = Dynamic current caused by an input transition pair (HLH or LHL)
f0 = Clock frequency for registered devices, otherwise zero
f1 = Input signal frequency
N1 = Number of inputs changing at f1
All currents are in milliamperes and all frequencies are in megahertz.
|| Values for these conditions are examples of the ICC formula.
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