TI CD74FCT244M

CD74FCT240AT and CD74FCT244AT were not acquired from Harris Semiconductor.
Data sheet acquired from Harris Semiconductor
SCHS270A
CD54/74FCT240, CD54/74FCT240AT,
CD54/74FCT241, CD54/74FCT244,
CD54/74FCT244AT
FCT Interface Logic
Octal Buffers/Line Drivers, Three-State
February 1996
Features
Description
• CD54/74FCT240, CD54/74FCT240AT - Inverting
The CD54/74FCT240, 240AT, 241, 244 and 244AT threestate octal buffers/line drivers use a small-geometry
BiCMOS technology. The output stage is a combination of
bipolar and CMOS transistors that limits the output-HIGH
level to two diode drops below VCC. This resultant lowering
of output swing (0V to 3.7V) reduces power bus ringing (a
source of EMI) and minimizes VCC bounce and ground
bounce and their effects during simultaneous output
switching. The output configuration also enhances switching
speed and is capable of sinking 48mA to 64mA.
• CD54/74FCT241, CD54/74FCT244, CD54/74FCT244AT Non-Inverting
• Buffered Inputs
• Typical Propagation Delay:
4.1ns at VCC = 5V, TA = 25oC (FCT240AT, FCT244AT)
• SCR-Latchup-Resistant BiCMOS Process and Circuit
Design
The CD54/74FCT240, 240AT, 244 and 244AT have activeLOW output enables (1OE, 2OE). The CD54/74FCT241 and
CD54/74FCT241AT have one active-LOW (1OE) and one
active-HIGH (2OE) output enable.
• FCTXXX Types - Speed of Bipolar FAST®/AS/S;
FCTXXXAT Types - 30% Faster Than FAST/AS/S with
Significantly Reduced Power Consumption
• 48mA to 64mA Output Sink Current (Commercial/Extended Industrial)
Functional Diagram
• Output Voltage Swing Limited to 3.7V at VCC = 5V
1A0
1A1
1A2
1A3
2A0
2A1
2A2
2A3
240, 244 241
1OE
1OE
• Controlled Output-Edge Rates
• Input/Output Isolation to VCC
• BiCMOS Technology with Low Quiescent Power
Ordering Information
PART NUMBER
TEMP. RANGE (oC)
PACKAGE
2OE
2
4
6
8
11
13
15
17
18
16
14
12
9
7
5
3
1
19
241, 244
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
240
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
VCC = 20
GND = 10
2OE
CD54/74FCT240E
-55 to 125, 0 to 70
20 Ld PDIP
CD54/74FCT240ATE
-55 to 125, 0 to 70
20 Ld PDIP
INPUT
INPUT
CD54/74FCT241E
-55 to 125, 0 to 70
20 Ld PDIP
1OE, 20E
A
Y
CD54/74FCT244E
-55 to 125, 0 to 70
20 Ld PDIP
L
L
H
CD54/74FCT244ATE
-55 to 125, 0 to 70
20 Ld PDIP
L
H
L
H
X
Z
CD54/74FCT240M
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT240ATM
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT241M
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT244M
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT244ATM
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT240SM
-55 to 125, 0 to 70
20 Ld SSOP
CD54/74FCT241SM
-55 to 125, 0 to 70
20 Ld SSOP
CD54/74FCT244SM
-55 to 125, 0 to 70
20 Ld SSOP
CD54/74FCT240, CD54/74FCT240AT TRUTH TABLE
OUTPUT
CD54/74FCT244, CD54/74FCT244AT TRUTH TABLE
INPUT
INPUT
OUTPUT
1OE, 2OE
A
Y
L
L
H
L
H
L
H
X
Z
CD54/74FCT241 TRUTH TABLE
INPUT
OUTPUT
CD54FCT240H
-55 to 125
1OE
CD54FCT241H
-55 to 125
L
L
CD54FCT244H
-55 to 125
L
H
H
X
Z
NOTE:
1A
1Y
INPUT
OUTPUT
2OE
2A
2Y
L
L
X
Z
H
H
L
L
H
H
H
H = High Voltage Level, L = LOW Voltage Level
X = Immaterial, Z = HIGH Impedance
FAST® is a registered trademark of Fairchild Semiconductor Corporation.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1996
1
File Number
2227.3
CD54/74FCT540, CD54/74FCT540AT, CD54/74FCT241, CD54/74FCT244, CD54/74FCT244AT
Switching Specifications
FCT Series tr, tf = 2.5ns, CL = 50pF, RL - See Figure 2
+25o
C
PARAMETER
SYMBOL
0oC to
+70oC
-55oC to
+125oC
+25o
C
0oC to
+70oC
-55oC to
+125oC
VCC
(V)
TYP
MIN
MAX
MIN
MAX
TYP
MIN
MAX
MIN
MAX UNITS
Propagation Delays
Data to Outputs
Output Enable
Times
Output Disable
Times
Power Dissipation
Capacitance
FCT240/AT
tPLH ,
tPHL
5†
5
1.5
8
1.5
9
4.4
1.5
5.6
1.5
6.7
ns
FCT241
tPLH ,
tPHL
5
4
1.5
6.5
1.5
7
-
-
-
-
-
ns
FCT244/AT
tPLH ,
tPHL
5
4.5
1.5
6.5
1.5
7
3.8
1.5
5.3
1.5
6.2
µs
FCT240/AT
tPZL ,
tPZH
5
7
1.5
10
1.5
10.5
4.7
1.5
6.2
1.5
7.7
µs
FCT241
tPZL ,
tPZH
5
5.5
1.5
8
1.5
8.5
-
-
-
-
-
ns
FCT244/AT
tPZL ,
tPZH
5
6
1.5
8
1.5
8.5
4.8
1.5
6.5
1.5
7.8
ns
FCT240/AT
tPLZ ,
tPHZ
5
6
1.5
9.5
1.5
10
4
1.5
5.6
1.5
6.5
µs
FCT241
tPLZ ,
tPHZ
5
4.5
1.5
7
1.5
7.5
-
-
-
-
-
ns
FCT244/AT
tPLZ ,
tPHZ
5
5
1.5
7
1.5
7.5
4.5
1.5
5.8
1.5
6.8
µs
FCT240/AT
CPD §
-
38 Typical
38 Typical
pF
FCT241
CPD §
-
33 Typical
-
pF
FCT244/AT
CPD §
35 Typical
35 Typical
pF
Min. (Valley) VOHV During Switching of Other Outputs (Output Under
Test Not Switching)
VOHV
See
Figure 1
5
0.5 Typical at +25oC
V
Max. (Peak) VOLP During Switching of Other Outputs (Output Under
Test Not Switching)
VOLP
See
Figure 1
5
1 Typical at +25oC
V
Input Capacitance
CI
-
-
-
10
-
10
-
-
10
-
10
pF
3-State Output Capacitance
CO
-
-
-
15
-
15
-
-
15
-
15
pF
† 5V: min. is at 5.5V, max. is at 4.5V.
5V: min. is at 5.25V for 0oC to +70oC, max. is at 4.75V for 0oC to +70oC, typ. is at 5V
§ CPD, measured per function, is used to determine the dynamic power consumption. PD (per package) = VCC ICC + ∑ (VCC2 fi CPD + VO2
fo CL + VCC ∆ICC D) where:
VCC = supply voltage
∆ICC = flow through current x unit load
CL = output load capacitance
D = duty cycle of input high
fo = output frequency
fi = input frequency
2
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