IDT IDT74FCT623ATP Fast cmos octal bus transceivers (3-state) Datasheet

IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL
BUS TRANSCEIVERS
(3-STATE)
Integrated Device Technology, Inc.
FEATURES:
DESCRIPTION
•
•
•
•
The FCT623T/AT/CT is a non-inverting octal transceiver
with 3-state bus-driving outputs in both the send and receive
directions. The B bus outputs are capable of sinking 64mA and
sourcing up to 15mA, providing very good capacitive drive
characteristics.
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control
function implementation allows for maximum flexibility in
timing.
One important feature of the FCT623T/AT/CT is the Power
Down Disable capability. When the GAB and GBA inputs are
conditioned to put the device in high-Z state, the I/O ports will
maintain high impedance during power supply ramps and
when VCC = 0V. This is a desirable feature in back-plane
applications where it may be necessary to perform “live”
insertion and removal of cards for on-line maintenance. It is
also a benefit in systems with multiple redundancy where one
or more redundant cards may be powered-off.
•
•
•
•
•
•
Std., A and C speed grades
Low input and output leakage ≤1µA (max.)
CMOS power levels
True TTL input and output compatibility
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
High drive outputs (-15mA IOH, 64mA IOL)
Power off disable outputs permit “live insertion”
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, CERPACK and LCC packages
FUNCTIONAL BLOCK DIAGRAM
GBA
GAB
B1
A1
B2 - B8
A2 - A8
7 other transceivers
2563 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
1996 Integrated Device Technology, Inc.
6.19
6.19
NOVEMBER 1995
DSC-2563/5
1
1
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
GAB
VCC
20 19
18
B1
5
17
B2
6
16
B3
7
15
B4
8
14
B5
VCC
2
3
19
GBA
18
B1
17
B2
A3
4
16
A4
15
B3
B4
A5
14
B5
A6
A7
5
A5
6
A6
7
A7
8
13
B6
A8
GND
9
12
10
11
B7
B8
2
L20-2
9 10 11 12 13
A8
A4
3
2563 drw 02
DIP/SOIC/CERPACK
TOP VIEW
ABSOLUTE MAXIMUM RATINGS(1)
Description
Enable Inputs
A1 - A8
A Bus Inputs or 3-State Outputs
B1 - B8
B Bus Inputs or 3-State Outputs
2563 tbl 01
FUNCTION TABLE(1)
GBA
Enable Inputs
GAB
L
L
Outputs
B data to A bus
H
H
A data to B bus
H
L
Z
L
H
B data to A bus
A data to B bus
NOTES:
1. H = HIGH Voltage Level
2. L = LOW Volage Level
3. Z = High-Impedance (OFF) state
2563 drw 03
LCC
TOP VIEW
DEFINITION OF FUNCTIONAL TERMS
Pin Names
GBA, GAB
B6
P20-1
D20-1
SO20-2
&
E20-1
B8
B7
4
A1
1
20
GND
A2
A3
INDEX
1
A2
GAB
A1
GBA
PIN CONFIGURATIONS
2563 tbl 02
Symbol
Rating
Commercial
VTERM(2) Terminal Voltage
–0.5 to +7.0
with Respect to
GND
VTERM(3) Terminal Voltage
–0.5 to
with Respect to
VCC +0.5
GND
TA
Operating
0 to +70
Temperature
TBIAS
Temperature
–55 to +125
Under Bias
TSTG
Storage
–55 to +125
Temperature
PT
Power Dissipation
0.5
Military
–0.5 to +7.0
Unit
V
–0.5 to
VCC +0.5
V
–55 to +125
°C
–65 to +135
°C
–65 to +150
°C
0.5
W
I OUT
–60 to +120
mA
DC Output
Current
–60 to +120
2563 lnk 03
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS 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)
CIN
Input
Capacitance
COUT
Output
Capacitance
Conditions
VIN = 0V
Typ.
6
VOUT = 0V
8
Max. Unit
10
pF
12
pF
2563 lnk 04
NOTE:
1. This parameter is measured at characterization but not tested.
6.19
2
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: TA = 0°C to +70°C, V CC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%
Symbol
VIH
VIL
Parameter
Input HIGH Level
Test Conditions(1)
Guaranteed Logic HIGH Level
Input LOW Level
Min.
2.0
Typ.(2)
—
Max.
—
Unit
V
Guaranteed Logic LOW Level
—
—
0.8
V
II H
Input HIGH
Current (5)
VCC = Max., VI = 2.7V
—
—
±1
µA
II L
Input LOW Current (5)
VCC = Max., VI = 0.5V
—
—
±1
µA
VCC = Max., VI = VCC (Max.)
—
—
±1
µA
Current (5)
II
Input HIGH
VIK
Clamp Diode Voltage
VCC = Min., IN = –18mA
—
–0.7
–1.2
V
IOS
Short Circuit Current
VCC = Max.(3) , VO = GND
–60
–120
–225
mA
VOH
Output HIGH Voltage
(A and B Bus)
VCC = Min.
VIN = VIH or VIL
IOH = –6mA MIL.
IOH = –8mA COM'L.
IOH = –12mA MIL.
IOH = –15mA COM'L.
VCC = Min.
IOL = 32mA MIL. (4)
VIN = VIH or VIL
IOL = 48mA COM'L.
VCC = Min.
IOL = 48mA MIL. (4)
VIN = VIH or VIL
IOL = 64mA COM'L.
VCC = 0V, VIN or VO ≤ 4.5V
2.4
3.3
—
V
2.0
3.0
—
V
—
0.3
0.5
V
—
0.3
0.55
V
—
—
±1
µA
—
—
200
—
mV
—
0.01
1
µA
VOL
Output LOW Voltage (A Bus)
VOL
Output LOW Voltage (B Bus)
IOFF
Input/Output Power Off Leakage(6)
VH
Input Hysteresis
ICC
Quiescent Power Supply Current
VCC = Max., VIN = GND or VCC
NOTES:
2563 tbl 05
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. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. These are maximum IOL values per output, for 8 outputs turned on simultaneously. Total maximum IOL (all outputs) is 512mA for commercial and 384mA
for military. Derate IOL for number of outputs exceeding 8 turned on simultaneously.
5. The test limit for this parameter is ±5µA at TA = –55°C.
6. This parameter is guaranteed but not tested.
6.19
3
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
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.
Outputs Open
GBA = GAB = GND
One Input Toggling
50% Duty Cycle
VCC = Max.
Outputs Open
fi = 10MHz
50% Duty Cycle
GBA = GAB = GND
One Bit Toggling
VCC = Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
GBA = GAB = GND
Eight Bits Toggling
Min.
Typ.(2)
Max.
Unit
—
0.5
2.0
mA
VIN = VCC
VIN = GND
—
0.15
0.25
mA/
MHz
VIN = VCC
VIN = GND
—
1.5
3.5
mA
VIN = 3.4V
VIN = GND
—
1.8
4.5
VIN = VCC
VIN = GND
—
3.0
6.0 (5)
VIN = 3.4V
VIN = GND
—
5.0
14.0 (5)
2563 tbl 07
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.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
54/74FCT623T
Com'l.
Symbol
Parameter
tPLH
tPHL
Propagation Delay
An to Bn
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
Bn to An
Output Enable Time
GBA to An
Output Disable Time
GBA to An
Output Enable Time
GAB to Bn
Output Disable Time
GAB to Bn
Condition(1)
CL = 50pF
RL = 500Ω
54/74FCT623AT
Mil.
Com'l.
54/74FCT623CT
Mil.
Com'l.
Mil.
Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit
1.5
7.5
1.5
9.0
1.5
5.5
1.5
6.3
1.5
4.8
1.5
5.4
ns
1.5
7.5
1.5
9.5
1.5
5.5
1.5
6.3
1.5
4.8
1.5
5.4
ns
1.5
9.0
1.5 10.0
1.5
7.0
1.5
8.0
1.5
6.1
1.5
6.9
ns
1.5
8.0
1.5
9.0
1.5
6.5
1.5
7.4
1.5
5.6
1.5
6.4
ns
1.5
9.0
1.5 10.5
1.5
7.0
1.5
8.0
1.5
6.1
1.5
6.9
ns
1.5
8.0
1.5
1.5
6.5
1.5
7.4
1.5
5.6
1.5
6.4
ns
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays
9.0
2563 tbl 07
6.19
4
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
TEST CIRCUITS AND WAVEFORMS
SWITCH POSITION
TEST CIRCUITS FOR ALL OUTPUTS
V CC
7.0V
500Ω
Pulse
Generator
Open Drain
Disable Low
Closed
Open
All Other Tests
2563 lnk 09
DEFINITIONS:
CL= Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
D.U.T.
50pF
RT
Switch
Enable Low
V OUT
VIN
Test
500Ω
CL
2563 drw 05
SET-UP, HOLD AND RELEASE TIMES
DATA
INPUT
tH
tSU
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
tREM
tSU
PULSE WIDTH
3V
1.5V
0V
3V
1.5V
0V
LOW-HIGH-LOW
PULSE
1.5V
tW
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
3V
1.5V
0V
tH
2563 drw 07
2563 drw 06
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
OUTPUT
tPLH
OPPOSITE PHASE
INPUT TRANSITION
tPHL
3V
1.5V
0V
DISABLE
3V
1.5V
0V
CONTROL
INPUT
tPLZ
tPZL
VOH
1.5V
VOL
OUTPUT
NORMALLY
LOW
3V
1.5V
0V
SWITCH
CLOSED
3.5V
1.5V
tPZH
OUTPUT
NORMALLY
HIGH
2563 drw 08
SWITCH
OPEN
3.5V
0.3V
VOL
tPHZ
0.3V
1.5V
0V
VOH
0V
2563 drw 09
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns
6.19
5
IDT54/74FCT623T/AT/CT
FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT
XX
FCT
Temp. Range
X
Family
XXXX
Device Type
X
Package
6.19
X
Process
Blank
B
Commercial
MIL-STD-883, Class B
P
D
SO
L
E
Plastic DIP
CERDIP
Small Outline IC
Leadless Chip Carrier
CERPACK
623T
623AT
623CT
Octal Bus Transceiver (Inverting)
Octal Bus Transceiver (Non-Inverting)
Blank
High Drive
54
74
–55°C to +125°C
0°C to +70°C
6
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