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PDF IDT54541TD Data sheet ( Hoja de datos )

Número de pieza IDT54541TD
Descripción FAST CMOS OCTAL BUFFER/LINE DRIVERS
Fabricantes Integrated Device 
Logotipo Integrated Device Logotipo



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IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER FAST CMOS OCTAL
BUFFER/LINE
MIIDLITTA5R4/Y7A4NFDCTCO24M0MTE/RACTIA/CLTT/EDMTPE- R2A2T4U0RTE/ARTA/NCGTES
IDT54/74FCT244T/AT/CT/DT - 2244T/AT/CT
IDT54/74FCT540T/AT/CT
DRIVERS
IDT54/74FCT541/2541T/AT/CT
Integrated Device Technology, Inc.
FEATURES:
• Common features:
– Low input and output leakage 1µA (max.)
– CMOS power levels
– True TTL input and output compatibility
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
– Meets or exceeds JEDEC standard 18 specifications
– Product available in Radiation Tolerant and Radiation
Enhanced versions
– Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
– Available in DIP, SOIC, SSOP, QSOP, CERPACK
and LCC packages
• Features for FCT240T/FCT244T/FCT540T/FCT541T:
– Std., A, C and D speed grades
– High drive outputs (-15mA IOH, 64mA IOL)
• Features for FCT2240T/FCT2244T/FCT2541T:
– Std., A and C speed grades
– Resistor outputs (-15mA IOH, 12mA IOL Com.)
(-12mA IOH, 12mA IOL Mil.)
– Reduced system switching noise
DESCRIPTION:
The IDT octal buffer/line drivers are built using an advanced
dual metal CMOS technology. The FCT240T/FCT2240T and
FCT244T/FCT2244T are designed to be employed as memory
and address drivers, clock drivers and bus-oriented transmit-
ter/receivers which provide improved board density.
The FCT540T and FCT541T/FCT2541T are similar in
function to the FCT240T/FCT2240T and FCT244T/FCT2244T,
respectively, except that the inputs and outputs are on oppo-
site sides of the package. This pinout arrangement makes
these devices especially useful as output ports for micropro-
cessors and as backplane drivers, allowing ease of layout and
greater board density.
The FCT2240T, FCT2244T and FCT2541T have balanced
output drive with current limiting resistors. This offers low
ground bounce, minimal undershoot and controlled output fall
times-reducing the need for external series terminating resis-
tors. FCT2xxxT parts are plug-in replacements for FCTxxxT
parts.
FUNCTIONAL BLOCK DIAGRAMS
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
OEB
OA0
DB0
OA1
DB1
OA2
DB2
OA3
DB3
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
FCT240/2240T
FCT244/2244T
OEB
OA0
DB0
OA1
DB1
OA2
DB2
OA3
DB3
2565 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
6.8
6.8
2565 drw 02
OEA OEB
D0 O0
D1 O1
D2 O2
D3 O3
D4 O4
D5 O5
D6 O6
D7 O7
FCT540/541/2541T
*Logic diagram shown for 'FCT540.
'FCT541/2541T is the non-inverting option.
2565 drw 03
DECEMBER 1995
DSC-2565/6
11

1 page




IDT54541TD pdf
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
ICC
ICCD
IC
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current(4)
Total Power Supply Current(6)
Test Conditions(1)
VCC = Max.
VIN = 3.4V(3)
VCC = Max.
VIN = VCC
Outputs Open
OEA = OEB = GND
VIN = GND
One Input Toggling
50% Duty Cycle
VCC = Max.
VIN = VCC
FCTxxxT
FCT2xxxT
FCTxxxT
Min. Typ.(2) Max.
— 0.5 2.0
— 0.15 0.25
— 0.06 0.12
— 1.5 3.5
Unit
mA
mA/
MHz
mA
Outputs Open
VIN = GND FCT2xxxT — 0.6 2.2
fi = 10MHz
50% Duty Cycle
OEA = OEB = GND
VIN = 3.4 FCTxxxT — 1.8 4.5
One Bit Toggling
VIN = GND FCT2xxxT
0.9 3.2
VCC = Max.
VIN = VCC FCTxxxT — 3.0 6.0(5)
Outputs Open
VIN = GND FCT2xxxT —
1.2 3.4(5)
fi = 2.5MHz
50% Duty Cycle
OEA = OEB = GND
Eight Bits Toggling
VIN = 3.4 FCTxxxT —
VIN = GND FCT2xxxT —
5.0 14.0(5)
3.2 11.4(5)
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ICC DHNT + ICCD (fCP/2 + fiNi)
ICC = Quiescent Current
ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
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)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fi = Input Frequency
Ni = Number of Inputs at fi
All currents are in milliamps and all frequencies are in megahertz.
2565 tbl 08
6.8 5

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