IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FAST CMOS OCTAL
BUFFER/LINE DRIVER
IDT54/74FCT541/A/C
FEATURES:
•
•
•
•
•
•
•
•
IDT54FCT541 equivalent to FAST™ 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
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.
FUNCTIONAL BLOCK DIAGRAM
OE
A
1
19
OE
B
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
2
18
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
3
17
4
16
5
15
6
14
7
13
8
12
9
11
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
1
JUNE 2002
DSC-5429/4
© 2002 Integrated Device Technology, Inc.
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATION
OE
A
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
GND
2
3
4
5
6
7
8
9
10
19
18
17
16
15
14
13
12
11
OE
B
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
3
2
1
20
19
18
17
16
15
14
9
10
11
12
13
D
2
D
3
D
4
D
5
D
6
D
1
D
0
OE
A
1
20
V
CC
INDEX
OE
B
V
CC
4
5
6
7
8
O
0
O
1
O
2
O
3
O
4
D
7
GND
O
7
O
6
CERDIP/ SOIC
TOP VIEW
LCC
TOP VIEW
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM
(2)
V
TERM
(3)
T
A
T
BIAS
T
STG
P
T
I
OUT
Rating
Terminal Voltage
with Respect to GND
Terminal Voltage
with Respect to GND
Operating Temperature
Temperature under BIAS
Storage Temperature
Power Dissipation
DC Output Current
0 to +70
–55 to +125
–55 to +125
0.5
120
–55 to +125
–65 to +135
–65 to +150
0.5
120
°C
°C
°C
W
mA
–0.5 to V
CC
–0.5 to V
CC
V
Commercial
–0.5 to +7
Military
–0.5 to +7
Unit
V
PIN DESCRIPTION
Pin Names
OE
A
,
OE
B
Dx
Ox
Inputs
Outputs
Description
3-State Output Enable Inputs (Active LOW)
FUNCTION TABLE
(1)
OE
A
L
L
H
Inputs
OE
B
L
L
H
Dx
L
H
X
Output
Ox
L
H
Z
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.
CAPACITANCE
(T
A
= +25°C, F = 1.0MHz)
Symbol
C
IN
C
OUT
Parameter
(1)
Input Capacitance
Output Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
6
8
Max.
10
12
Unit
pF
pF
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High Impedance
NOTE:
1. This parameter is measured at characterization but not tested.
2
O
5
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
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
= 0°C to +70°C, V
CC
= 5.0V ±5%, Military: T
A
= -55°C to +125°C, V
CC
= 5.0V ±10%
Symbol
V
IH
V
IL
I
IH
I
IL
I
OZH
I
OZL
V
IK
I
OS
V
OH
Off State (High Impedance)
Output Current
Clamp Diode Voltage
Short Circuit Current
Output HIGH Voltage
V
CC
= Max.
Parameter
Input HIGH Level
Input LOW Level
Input HIGH Current
V
CC
= Max.
Input LOW Current
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
I
= V
CC
V
I
= 2.7V
V
I
= 0.5V
V
I
= GND
V
O
= V
CC
V
O
= 2.7V
V
O
= 0.5V
V
O
= GND
Min.
2
—
—
—
—
—
—
—
—
—
—
–60
V
HC
V
HC
2.4
2.4
—
—
—
—
Typ.
(2)
—
—
—
—
—
—
—
—
—
—
–0.7
–120
V
CC
V
CC
4.3
4.3
GND
GND
0.3
0.3
Max.
—
0.8
5
5
(4)
–5
(4)
–5
10
10
(4)
–10
(4)
–10
–1.2
—
—
—
—
—
V
LC
V
LC
(4)
0.55
0.55
µA
µA
Unit
V
V
V
CC
= Min., I
IN
= –18mA
V
CC
= Max., V
O
= GND
(3)
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OH
= –32µA
V
CC
= Min
I
OH
= –300µA
V
IN
= V
IH
or V
IL
I
OH
= –12mA MIL
I
OH
= –15mA COM'L
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OL
= 300µA
V
CC
= Min
I
OL
= 300µA
V
IN
= V
IH
or V
IL
I
OL
= 48mA MIL
I
OL
= 64mA COM'L
V
mA
V
V
OL
Output LOW Voltage
V
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, +25°C 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.
3
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
V
LC
= 0.2V; V
HC
= V
CC
- 0.2V
Symbol
I
CC
∆I
CC
I
CCD
Parameter
Quiescent Power Supply Current
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
(4)
Test Conditions
(1)
V
CC
= Max.
V
IN
≥
V
HC
; V
IN
≤
V
LC
V
CC
= Max.
V
IN
= 3.4V
(3)
V
CC
= Max.
Outputs Open
OE
A
=
OE
B
= GND or
OE
A
= GND
One Input Toggling
50% Duty Cycle
V
CC
= Max.
Outputs Open
fi = 10MHz
50% Duty Cycle
OE
A
=
OE
B
= GND or
OE
A
= GND
One Bit Toggling
V
CC
= Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
OE
A
=
OE
B
= GND or
OE
A
= 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, +25°C 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.
Min.
—
—
Typ.
(2)
0.2
0.5
0.15
Max.
1.5
2
0.25
Unit
mA
mA
mA/
MHz
V
IN
≥
V
HC
V
IN
≤
V
LC
—
I
C
Total Power Supply Current
(6)
V
IN
≥
V
HC
V
IN
≤
V
LC
(FCT)
V
IN
= 3.4V
V
IN
= GND
V
IN
≥
V
HC
V
IN
≤
V
LC
(FCT)
V
IN
= 3.4V
V
IN
= GND
—
1.7
4
mA
—
2
5
—
3.2
6.5
(5)
—
5.2
14.5
(5)
4
IDT54/74FCT541/A/C
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - INDUSTRIAL
74FCT541A
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Output Disable Time
1.5
5.6
1.5
5.2
ns
Parameter
Propagation Delay
Dx to Ox
Output Enable Time
Condition
(1)
C
L
= 50pF
R
L
= 500Ω
1.5
6.2
1.5
5.8
ns
Min
.(2)
1.5
Max
.
4.8
Min
.(2)
1.5
74FCT541C
Max
.
4.1
Unit
ns
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - MILITARY
54FCT541
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
54FCT541A
Min
.(2)
1.5
1.5
1.5
Max
.
5.1
6.5
5.9
Unit
ns
ns
ns
Parameter
Propagation Delay
Dx to Ox
Output Enable Time
Output Disable Time
Condition
(1)
C
L
= 50pF
R
L
= 500Ω
Min
.(2)
1.5
1.5
1.5
Max
.
9
10.5
10
5
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