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PDF IDT54FCT648ATE Data sheet ( Hoja de datos )

Número de pieza IDT54FCT648ATE
Descripción FAST CMOS OCTAL TRANSCEIVER/ REGISTERS (3-STATE)
Fabricantes Integrated Device 
Logotipo Integrated Device Logotipo



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Integrated Device Technology, Inc.
FAST CMOS OCTAL IDT54/74FCT646T/AT/CT/DT - 2646T/AT/CT
TRANSCEIVER/
IDT54/74FCT648T/AT/CT
IDT54/74FCT652T/AT/CT/DT - 2652T/AT/CT
REGISTERS (3-STATE)
FEATURES:
• Common features:
– Low input and output leakage 1µA (max.)
– Extended commercial range of –40°C to +85°C
– 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, TSSOP,
CERPACK and LCC packages
• Features for FCT646T/648T/652T:
– Std., A, C and D speed grades
– High drive outputs (-15mA IOH, 64mA IOL)
– Power off disable outputs permit “live insertion”
• Features for FCT2646T/2652T:
– Std., A, and C speed grades
– Resistor outputs (-15mA IOH, 12mA IOL Com.)
(-12mA IOH, 12mA IOL Mil.)
– Reduced system switching noise
FUNCTIONAL BLOCK DIAGRAM
IDT54/74FCT646/2646/648
ONLY
G
GBA
DESCRIPTION:
The FCT646T/FCT2646T/FCT648T/FCT652T/2652T con-
sist of a bus transceiver with 3-state D-type flip-flops and
control circuitry arranged for multiplexed transmission of data
directly from the data bus or from the internal storage regis-
ters.
The FCT652T/FCT2652T utilize GAB and GBA signals to
control the transceiver functions. The FCT646T/FCT2646T/
FCT648T utilize the enable control (G) and direction (DIR)
pins to control the transceiver functions.
SAB and SBA control pins are provided to select either real-
time or stored data transfer. The circuitry used for select
control will eliminate the typical decoding glitch that occurs in
a multiplexer during the transition between stored and real-
time data. A LOW input level selects real-time data and a
HIGH selects stored data.
Data on the A or B data bus, or both, can be stored in the
internal D flip-flops by LOW-to-HIGH transitions at the appro-
priate clock pins (CPAB or CPBA), regardless of the select or
enable control pins.
The FCT26xxT have balanced drive outputs with current
limiting resistors. This offers low ground bounce, minimal
undershoot and controlled output fall times-reducing the need
for external series terminating resistors. FCT2xxxT parts are
plug-in replacements for FCTxxxT parts.
IDT54/74FCT652/2652
ONLY
GAB
DIR
CPBA
SBA
CPAB
SAB
1 OF 8 CHANNELS
B REG
1D
C1
646/2646/652/2652
ONLY
A1 A REG
1D
C1
B1
646/2646/652/2652
ONLY
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
TO 7 OTHER CHANNELS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
6.20
2634 drw 01
SEPTEMBER 1996
DSC-2634/9
1

1 page




IDT54FCT648ATE pdf
IDT54/74FCT646/2646/652/2652T/AT/CT/DT, 648T/AT/CT
FAST CMOS OCTAL TRANSCEIVER/REGISTER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
VTERM(2) Terminal Voltage with Respect to
GND
VTERM(3) Terminal Voltage with Respect to
GND
TSTG Storage Temperature
Max.
–0.5 to +7.0
–0.5 to
VCC +0.5
–65 to +150
Unit
V
V
°C
IOUT DC Output Current
–60 to +120 mA
NOTES:
2634 lnk 04
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-
INGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability. No terminal voltage may exceed
VCC by +0.5V unless otherwise noted.
2. Input and VCC terminals only.
3. Outputs and I/O terminals only.
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol Parameter(1) Conditions Typ. Max. Unit
CIN Input
Capacitance
VIN = 0V 6 10 pF
COUT Output
VOUT = 0V 8
12 pF
Capacitance
NOTE:
2634 lnk 05
1. This parameter is measured at characterization but not tested.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: TA = –40°C to +85°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%
Symbol
VIH
Parameter
Input HIGH Level
Test Conditions(1)
Guaranteed Logic HIGH Level
Min. Typ.(2)
2.0 —
VIL Input LOW Level
Guaranteed Logic LOW Level
——
II H Input HIGH Current(4)
VCC = Max.
VI = 2.7V
——
II L Input LOW Current(4)
VI = 0.5V
——
IOZH
High Impedance Output Current VCC = Max.
VO = 2.7V
——
IOZL
(3-State Output pins)(4)
VO = 0.5V
——
II Input HIGH Current(4)
VCC = Max., VI = VCC (Max.)
——
VIK Clamp Diode Voltage
VCC = Min., IIN = –18mA
— –0.7
VH Input Hysteresis
— 200
ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC
— 0.01
OUTPUT DRIVE CHARACTERISTICS FOR FCT646T/648T/652T
Symbol
Parameter
Test Conditions(1)
VOH Output HIGH Voltage
VCC = Min.
VIN = VIH or VIL
IOH = –6mA MIL.
IOH = –8mA COM'L.
IOH = –12mA MIL.
IOH = –15mA COM'L.
VOL Output LOW Voltage
IOS Short Circuit Current
VCC = Min.
IOL = 48mA MIL.
VIN = VIH or VIL
IOL = 64mA COM'L.
VCC = Max., VO = GND(3)
IOFF
Input/Output Power Off Leakage(5) VCC = 0V, VIN or VO 4.5V
Min. Typ.(2)
2.4 3.3
2.0 3.0
— 0.3
–60 –120
——
Max. Unit
—V
0.8 V
±1 µA
±1
±1 µA
±1
±1 µA
–1.2 V
— mV
1 mA
2634 lnk 05
Max. Unit
—V
—V
0.55 V
–225 mA
±1 µA
2634 lnk 06
6.20 5

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