MILITARY AND COMMERCIAL TEMPERATURE RANGES
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
1
JUNE 2002
MILITARY AND COMMERCIAL TEMPERATURE RANGES
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
2002 Integrated Device Technology, Inc.
DSC-5429/4
FEATURES:
IDT54FCT541 equivalent to FASTTM speed and drive
IDT54/74FCT541A up to 25% faster than FAST
IDT74FCT541C up to 55% faster than FAST
I
OL
= 64mA (commercial) and 48mA (military)
CMOS power levels (1mW typ. static)
MIlitary product compliant to MIL-STD-883, Class B
Meets or exceeds JEDEC Standard 18 specifications
Available in the following packages:
Commercial: SOIC
Military: CERDIP, LCC
FUNCTIONAL BLOCK DIAGRAM
IDT54/74FCT541/A/C
FAST CMOS OCTAL
BUFFER/LINE DRIVER
DESCRIPTION:
The IDT octal buffer/line drivers are built using an advanced dual metal
CMOS technology. The FCT541 is designed to be employed as a memory
and address driver, clock driver and bus-oriented transmitter/receiver
which provides improved board density. The FCT541 is similar in function
to the FCT244, except that the inputs and outputs are on opposite sides of
the package. This pinout arrangement makes these devices especially
useful as output ports for microprocessors and as backplane drivers,
allowing ease of layout and greater board density.
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
0
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
OE
A
OE
B
1
3
2
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
MILITARY AND COMMERCIAL TEMPERATURE RANGES
2
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
PIN CONFIGURATION
CERDIP/ SOIC
TOP VIEW
LCC
TOP VIEW
Symbol
Rating
Commercial
Military
Unit
V
TERM
(2)
Terminal Voltage
0.5 to +7
0.5 to +7
V
with Respect to GND
V
TERM
(3)
Terminal Voltage
0.5 to V
CC
0.5 to V
CC
V
with Respect to GND
T
A
Operating Temperature
0 to +70
55 to +125
C
T
BIAS
Temperature under BIAS
55 to +125
65 to +135
C
T
STG
Storage Temperature
55 to +125
65 to +150
C
P
T
Power Dissipation
0.5
0.5
W
I
OUT
DC Output Current
120
120
mA
ABSOLUTE MAXIMUM RATINGS
(1)
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. Output and I/O terminals only.
Symbol
Parameter
(1)
Conditions
Typ.
Max.
Unit
C
IN
Input Capacitance
V
IN
= 0V
6
10
pF
C
OUT
Output Capacitance
V
OUT
= 0V
8
12
pF
CAPACITANCE
(T
A
= +25C, F = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
2
3
1
16
15
14
11
19
18
20
17
13
12
5
6
7
4
8
9
10
OE
A
D
2
D
0
D
1
D
3
D
6
D
4
D
5
D
7
V
CC
GND
OE
B
O
2
O
0
O
1
O
3
O
6
O
4
O
5
O
7
1
2
3
4
5
7
9
6
8
10
11
12
13
14
15
16
17
18
19
20
O
2
O
0
O
1
O
3
O
4
D
1
D
0
D
7
G
N
D
O
7
O
6
O
5
O
E
A
V
C
C
O
E
B
INDEX
D
2
D
3
D
6
D
4
D
5
Pin Names
Description
OE
A
, OE
B
3-State Output Enable Inputs (Active LOW)
Dx
Inputs
Ox
Outputs
PIN DESCRIPTION
NOTE:
1. H = HIGH Voltage Level
X = Don't Care
L = LOW Voltage Level
Z = High Impedance
FUNCTION TABLE
(1)
Inputs
Output
OE
A
OE
B
Dx
Ox
L
L
L
L
L
L
H
H
H
H
X
Z
MILITARY AND COMMERCIAL TEMPERATURE RANGES
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
3
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
V
IH
Input HIGH Level
Guaranteed Logic HIGH Level
2
--
--
V
V
IL
Input LOW Level
Guaranteed Logic LOW Level
--
--
0.8
V
I
IH
Input HIGH Current
V
I
= V
CC
--
--
5
V
CC
= Max.
V
I
= 2.7V
--
--
5
(4)
A
I
IL
Input LOW Current
V
I
= 0.5V
--
--
5
(4)
V
I
= GND
--
--
5
I
OZH
V
O
= V
CC
--
--
10
Off State (High Impedance)
V
CC
= Max.
V
O
= 2.7V
--
--
10
(4)
A
I
OZL
Output Current
V
O
= 0.5V
--
--
10
(4)
V
O
= GND
--
--
10
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
--
0.7
1.2
V
I
OS
Short Circuit Current
V
CC
= Max., V
O
= GND
(3)
60
120
--
mA
V
OH
Output HIGH Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OH
= 32
A
V
HC
V
CC
--
V
CC
= Min
I
OH
= 300
A
V
HC
V
CC
--
V
V
IN
= V
IH
or V
IL
I
OH
= 12mA MIL
2.4
4.3
--
I
OH
= 15mA COM'L
2.4
4.3
--
V
OL
Output LOW Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OL
= 300
A
--
GND
V
LC
V
CC
= Min
I
OL
= 300
A
--
GND
V
LC
(4)
V
V
IN
= V
IH
or V
IL
I
OL
= 48mA MIL
--
0.3
0.55
I
OL
= 64mA COM'L
--
0.3
0.55
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: V
LC
= 0.2V; V
HC
= V
CC
- 0.2V
Commercial: T
A
= 0C to +70C, V
CC
= 5.0V 5%, Military: T
A
= -55C to +125C, V
CC
= 5.0V 10%
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25C ambient and maximum loading.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. This parameter is guaranteed but not ttested.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
4
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
CC
Quiescent Power Supply Current
V
CC
= Max.
--
0.2
1.5
mA
V
IN
V
HC
; V
IN
V
LC
I
CC
Quiescent Power Supply Current
V
CC
= Max.
--
0.5
2
mA
TTL Inputs HIGH
V
IN
= 3.4V
(3)
I
CCD
Dynamic Power Supply
V
CC
= Max.
V
IN
V
HC
--
0.15
0.25
mA/
Current
(4)
Outputs Open
V
IN
V
LC
MHz
OE
A
= OE
B
= GND or
OE
A
= GND
One Input Toggling
50% Duty Cycle
I
C
Total Power Supply Current
(6)
V
CC
= Max.
V
IN
V
HC
--
1.7
4
mA
Outputs Open
V
IN
V
LC
fi = 10MHz
(FCT)
50% Duty Cycle
OE
A
= OE
B
= GND or
V
IN
= 3.4V
--
2
5
OE
A
= GND
V
IN
= GND
One Bit Toggling
V
CC
= Max.
V
IN
V
HC
--
3.2
6.5
(5)
Outputs Open
V
IN
V
LC
fi = 2.5MHz
(FCT)
50% Duty Cycle
OE
A
= OE
B
= GND or
V
IN
= 3.4V
--
5.2
14.5
(5)
OE
A
= GND
V
IN
= GND
Eight Bits Toggling
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25C ambient.
3. Per TTL driven input; (V
IN
= 3.4V). All other inputs at V
CC
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
I
CC
formula. These limits are guaranteed but not tested.
6. I
C
= I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
I
CC
D
H
N
T
+ I
CCD
(f
CP
/2+ f
i
N
i
)
I
CC
= Quiescent Current
I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
i
= Output Frequency
N
i
= Number of Outputs at f
i
All currents are in milliamps and all frequencies are in megahertz.
POWER SUPPLY CHARACTERISTICS
V
LC
= 0.2V; V
HC
= V
CC
- 0.2V
MILITARY AND COMMERCIAL TEMPERATURE RANGES
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
5
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - INDUSTRIAL
74FCT541A
74FCT541C
Symbol Parameter
Condition
(1)
Min
.(2)
Max
.
Min
.(2)
Max
.
Unit
t
PLH
Propagation Delay
C
L
= 50pF
1.5
4.8
1.5
4.1
ns
t
PHL
Dx to Ox
R
L
= 500
t
PZH
Output Enable Time
1.5
6.2
1.5
5.8
ns
t
PZL
t
PHZ
Output Disable Time
1.5
5.6
1.5
5.2
ns
t
PLZ
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - MILITARY
54FCT541
54FCT541A
Symbol Parameter
Condition
(1)
Min
.(2)
Max
.
Min
.(2)
Max
.
Unit
t
PLH
Propagation Delay
C
L
= 50pF
1.5
9
1.5
5.1
ns
t
PHL
Dx to Ox
R
L
= 500
t
PZH
Output Enable Time
1.5
10.5
1.5
6.5
ns
t
PZL
t
PHZ
Output Disable Time
1.5
10
1.5
5.9
ns
t
PLZ
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
6
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
Pulse
Generator
R
T
D.U.T
.
V
CC
V
IN
C
L
V
OUT
50pF
500
500
7.0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
t
SU
t
H
t
REM
t
SU
t
H
HIGH-LOW-HIGH
PULSE
LOW-HIGH-LOW
PULSE
t
W
1.5V
1.5V
SAME PHASE
INPUT TRANSITION
3V
1.5V
0V
1.5V
V
OH
t
PLH
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
3V
1.5V
0V
t
PLH
t
PHL
t
PHL
V
OL
CONTROL
INPUT
3V
1.5V
0V
3.5V
0V
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
SWITCH
CLOSED
SWITCH
OPEN
V
OL
0.3V
0.3V
t
PLZ
t
PZL
t
PZH
t
PHZ
3.5V
0V
1.5V
1.5V
ENABLE
DISABLE
V
OH
PRESET
CLEAR
CLOCK ENABLE
ETC.
Octal link
Octal link
Octal link
Octal link
Octal link
TEST CIRCUITS AND WAVEFORMS
Propagation Delay
Test Circuits for All Outputs
Enable and Disable Times
Set-Up, Hold, and Release Times
Pulse Width
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
2. Pulse Generator for All Pulses: Rate
1.0MHz; Z
O
50; t
F
2.5ns; t
R
2.5ns.
Test
Switch
Open Drain
Disable Low
Closed
Enable Low
All Other Tests
Open
SWITCH POSITION
DEFINITIONS:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
7
ORDERING INFORMATION
CORPORATE HEADQUARTERS
for SALES:
for Tech Support:
2975 Stender Way
800-345-7015 or 408-727-6116
logichelp@idt.com
Santa Clara, CA 95054
fax: 408-492-8674
(408) 654-6459
www.idt.com
IDT XX
Temp. Range
XXXX
Device Type
XX
Package
X
Process
SO
Commercial Options
Small Outline IC
Fast CMOS Octal Buffer/Line Driver
54
74
55
C to +125
C
0
C to +70
C
D
L
Military Options
CERDIP
Leadless Chip Carrier
Blank
B
Commercial
MIL-STD-883, Class B
FCT
541
541A
541C
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