IDT74FC240T Datasheet, PDF (1/9 Pages) Integrated Device Technology – FAST CMOS OCTAL BUFFER/LINE DRIVERS

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
M_II_DLI_TTA₅R_4/Y₇A₄N_FD_CTCO₂₄M₀M_TE_/R_AC_TIA_/CL_TT_/E_DM_TPE_- R₂A₂T₄U₀R_TE_/AR_TA_/N_CG_TES
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
1
1