Integrated Device Technology, Inc.
FAST CMOS
BUFFER/CLOCK DRIVER
FEATURES:
0.5 MICRON CMOS Technology
Guaranteed low skew < 700ps (max.)
Low duty cycle distortion < 1ns (max.)
Low CMOS power levels
TTL compatible inputs and outputs
Rail-to-rail output voltage swing
High drive: -24mA I
OH
, 64mA I
OL
Two independent output banks with 3-state control
1:5 fanout per bank
`Heartbeat' monitor output
Available in DIP, SOIC, SSOP (805 only), QSOP (805
only), Cerpack and LCC packages
Military product compliant to MIL-STD-883, Class B
DESCRIPTION:
The IDT49FCT805/A and IDT49FCT806/A are clock
drivers built using advanced dual metal CMOS technology.
The IDT49FCT805/A is a non-inverting clock driver and the
IDT49FCT806/A is an inverting clock driver. Each device
consists of two banks of drivers. Each bank drives five output
buffers from a standard TTL compatible input. The devices
feature a "heartbeat" monitor for diagnostics and PLL driving.
The MON output is identical to all other outputs and complies
with the output specifications in this document. The
IDT49FCT805/A and IDT49FCT806/A offer low capacitance
inputs with hysteresis. Rail-to-rail output swing improves
noise margin and allows easy interface with CMOS inputs.
IDT49FCT805
IDT49FCT806
IDT49FCT805/A
IDT49FCT806/A
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SEPTEMBER 1996
1996 Integrated Device Technology, Inc.
9.1
DSC-2574/10
1
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
OE
A
5
5
IN
A
IN
B
OE
B
OA
1
-OA
5
OB
1
-OB
5
MON
2574 drw 01
OE
A
5
5
IN
A
IN
B
OE
B
OA
1
-OA
5
OB
1
-OB
5
MON
2574 drw 02
FUNCTIONAL BLOCK DIAGRAMS
IDT49FCT805/806/A
FAST CMOS BUFFER/CLOCK DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
9.1
2
PIN CONFIGURATIONS
PIN DESCRIPTION
IDT49FCT805
IDT49FCT806
2574 tbl 01
OB
1
OA
1
OA
3
GND
A
OA
4
OA
5
OA
2
OE
A
IN
A
OB
2
OB
3
GND
B
OB
4
MON
IN
B
OB
5
OE
B
V
CCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
E20-1
V
CCA
2574 drw 03
NC
(1)
OB
1
OA
1
OA
3
GND
A
OA
4
OA
5
NC
OA
2
OE
A
IN
A
OB
2
OB
3
GND
B
OB
4
MON
IN
B
OB
5
OE
B
V
CCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DIP/SOIC/CERPACK
TOP VIEW
P20-1
D20-1
SO20-2
&
E20-1
V
CCA
2574 drw 05
(1)
OB
2
OB
3
GND
B
OB
4
OB
5
INDEX
LCC
TOP VIEW
3
2
20 19
1
4
5
6
7
8
18
17
16
15
14
9
10 11 12 13
L20-2
OA
3
GND
A
OA
4
OA
5
NC
2574 drw 06
OE
A
IN
A
IN
B
OE
B
MON
OA
2
OA
1
V
CCA
V
CCB
OB
1
(1)
Pin Names
Description
OE
A
,
OE
B
3-State Output Enable Inputs (Active LOW)
IN
A
, IN
B
Clock Inputs
OA
n
, OB
n
Clock Outputs (FCT805)
OA
n
,
OB
n
Clock Outputs (FCT806)
MON
Monitor Output (FCT805)
MON
Monitor Output (FCT806
INDEX
LCC
TOP VIEW
3
2
20 19
1
4
5
6
7
8
18
17
16
15
14
9 10 11 12 13
L20-2
OA
3
GND
A
OA
4
OA
5
NC
OB
2
OB
3
GND
B
OB
4
OB
5
2574 drw 04
OE
A
IN
A
IN
B
OE
B
MON
OA
2
OA
1
V
CCA
V
CCB
OB
1
(1)
NOTE:
1. Pin 8 is not internally connected on devices with a "K" prefix in the date
code. On older devices, pin 8 is internally connected to GND. To insure
compatibility with all products, pin 8 should be connected to GND at the
board level.
IDT49FCT805/806/A
FAST CMOS BUFFER/CLOCK DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
9.1
3
ABSOLUTE MAXIMUM RATINGS
(1)
CAPACITANCE
(T
A
= +25
C, f = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
2574 lnk 04
Symbol
Parameter
(1)
Conditions
Typ.
Max.
Unit
C
IN
Input
Capacitance
V
IN
= 0V
4.5
6.0
pF
C
OUT
Output
Capacitance
V
OUT
= 0V
5.5
8.0
pF
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
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
V
IH
Input HIGH Level
Guaranteed Logic HIGH Level
2.0
--
--
V
V
IL
Input LOW Level
Guaranteed Logic LOW Level
--
--
0.8
V
I
I H
Input HIGH Current
(5)
V
CC
= Max.
V
I
= V
CC
--
--
1
A
I
I L
Input LOW Current
(5)
V
CC
= Max.
V
I
=
GND
--
--
1
A
I
OZH
Off State (HIGH Z)
(5)
V
CC
= Max.
V
O
=
V
CC
--
--
1
A
I
OZL
Output Current
(5)
V
O
=
GND
--
--
1
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
--
0.7
1.2
V
I
OS
Short Circuit Current
V
CC
= Max.
(3)
, V
O
= GND
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
V
CC
= Min.
I
OH
= 300
A
V
HC
V
CC
--
V
IN
= V
IH
or V
IL
I
OH
= 12mA MIL.
I
OH
= 15mA COM'L.
3.6
4.3
--
I
OH
= -24mA MIL.
I
OH
= -24mA COM'L.
2.4
3.8
--
V
OL
Output LOW Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC,
I
OL
= 300
A
--
GND
V
LC
V
V
CC
= Min.
I
OH
= 300
A
--
GND
V
LC(4)
V
IN
= V
IH
or V
IL
I
OL
= 48mA MIL.
--
0.3
0.55
I
OL
= 64mA COM'L.
V
H
Input Hysteresis for all inputs
--
--
200
--
mV
I
CC
Quiescent Power Supply Current
V
CC
= Max., V
IN
= GND or V
CC
--
5
500
A
NOTES:
2574 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 V
CC
= 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. This parameter is guaranteed but not tested.
5. The test limit for this parameter is
5
A at T
A
= 55
C.
NOTE:
2574 tbl 02
1. H = HIGH, L = LOW, Z = High Impedance
FUNCTION TABLE
(1)
Outputs
Inputs
49FCT805
49FCT806
OE
OE
A
,
OE
OE
B
IN
A
, IN
B
OA
n
, OB
n
MON
OA
OA
n
,
OB
OB
n
MON
MON
L
L
L
L
H
H
L
H
H
H
L
L
H
L
Z
L
Z
H
H
H
Z
H
Z
L
Symbol
Description
Max.
Unit
V
TERM(2)
Terminal Voltage with Respect to
GND
0.5 to +7.0
V
V
TERM(3)
Terminal Voltage with Respect to
GND
0.5 to
V
CC
+0.5
V
T
STG
Storage Temperature
65 to +150
C
I
OUT
DC Output Current
60 to +120
mA
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
V
CC
by +0.5V unless otherwise noted.
2. Input and V
CC
terminals.
3. Output and I/O terminals.
2574 lnk 03
IDT49FCT805/806/A
FAST CMOS BUFFER/CLOCK DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
9.1
4
POWER SUPPLY CHARACTERISTICS
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 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 the 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
O
N
O
)
I
CC
= Quiescent Current (I
CCL,
I
CCH
and
I
CCZ
)
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
O
= Output Frequency
N
O
= Number of Outputs at f
O
All currents are in milliamps and all frequencies are in megahertz.
2574 tbl 06
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
CC
Quiescent Power Supply Current
TTL Inputs HIGH
V
CC
= Max.
V
IN
= 3.4V
(3)
--
1.0
2.5
mA
I
CCD
Dynamic Power Supply Current
(4)
V
CC
= Max.
Outputs Open
OE
A
=
OE
B
= GND
50% Duty Cycle
V
IN
= V
CC
V
IN
= GND
--
0.15
0.20
mA/
MHz/bit
I
C
Total Power Supply Current
(6)
V
CC
= Max.
Outputs Open
fo= 10MHz
V
IN
= V
CC
V
IN
= GND
--
1.5
2.5
mA
50% Duty Cycle
OE
A
=
OE
B
=V
CC
Mon. Output Toggling
V
IN
= 3.4V
V
IN
= GND
--
2.0
3.8
V
CC
= Max.
Outputs Open
fo = 2.5MHz
V
IN
= V
CC
V
IN
= GND
--
4.1
6.0
(5)
50% Duty Cycle
OE
A
=
OE
B
= GND
Eleven Outputs
Toggling
V
IN
= 3.4V
V
IN
= GND
--
5.1
8.5
(5)
IDT49FCT805/806/A
FAST CMOS BUFFER/CLOCK DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
9.1
5
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
(3,4)
2574 tbl 07
NOTES:
1. See test circuits and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. t
PLH
, t
PHL
, t
SK
(t) are production tested. All other parameters guaranteed but not production tested.
4. Propagation delay range indicated by Min. and Max. limit is due to V
CC
, operating temperature and process parameters. These propagation delay
limits do not imply skew.
IDT49FCT805/806
IDT49FCT805A/806A
Com'l.
Mil.
Com'l.
Mil.
Symbol
Parameter
Condition
(1)
Min
.(2)
Max.
Min
.(2)
Max.
Min
.(2)
Max.
Min
.(2)
Max.
Unit
t
PLH
t
PHL
Propagation Delay
IN
A
to OA
n
, IN
B
to OB
n
C
L
= 50pF
R
L
= 500
1.5
5.6
1.5
6.3
1.5
5.3
1.5
6.0
ns
t
R
Output Rise Time
--
1.5
--
1.5
--
1.5
--
1.5
ns
t
F
Output Fall Time
--
1.5
--
1.5
--
1.5
--
1.5
ns
t
SK
(o)
Output skew: skew between outputs of all
banks of same package (inputs tied together)
--
0.7
--
0.9
--
0.7
--
0.9
ns
t
SK
(p)
Pulse skew: skew between opposite
transitions of same output (|t
PHL
-t
PLH
|)
--
1.0
--
1.1
--
1.0
--
1.1
ns
t
SK
(t)
Package skew: skew between outputs of
different packages at same power supply
voltage, temperature, package type and
speed grade
--
1.5
--
1.5
--
1.5
--
1.5
ns
t
PZL
t
PZH
Output Enable Time
OE
A
to OA
n
,
OE
B
to OB
n
1.5
8.0
1.5
8.5
1.5
8.0
1.5
8.5
ns
t
PLZ
t
PHZ
Output Disable Time
OE
A
to OA
n
,
OE
B
to OB
n
1.5
7.0
1.5
7.5
1.5
7.0
1.5
7.5
ns
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