TI CY74FCT157T Quad 2-input multiplexer Datasheet

Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY54/74FCT157T
Quad 2-Input Multiplexer
SCCS014 - May 1994 - Revised February 2000
Features
Functional Description
• Function, pinout, and drive compatible with FCT and
F logic
• FCT-C speed at 4.3 ns max. (Com’l),
FCT-A speed at 5.0 ns max. (Com’l)
• Reduced VOH (typically = 3.3V) versions of equivalent
FCT functions
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-off disable feature
• Matched rise and fall times
• Fully compatible with TTL input and output logic levels
• ESD > 2000V
• Extended commercial range of −40˚C to +85˚C
• Sink current
64 mA (Com’l),
32 mA (Mil)
Source current
32 mA (Com’l),
12 mA (Mil)
The FCT157T is a quad two-input multiplexer that selects four
bits of data from two sources under the control of a common
data Select input (S). The Enable input (E) is Active LOW.
When (E) is HIGH, all of the outputs (Y) are forced LOW
regardless of all other input conditions.
Moving data from two groups of registers to four common
output buses is a common use of the FCT157T. The state of
the Select input determines the particular register from which
the data comes. It can also be used as a function generator.
The device is useful for implementing highly irregular logic by
generating any four of the sixteen different functions of two
variables with one variable common.
The FCT157T is a logic implementation of a four-pole,
two-position switch where the position of the switch is
determined by the logic levels supplied to the Select input.
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
Logic Block Diagram, FCT157T
I1a
I0a
I0b
I1b
I0c
Pin Configurations
I1c
I0d
I1d
E
S
Yb
NC
9
10
11
Yc
I1c
12
13
GND
I 1b
I 0b
NC
Ya
I 1a
LCC
Top View
8
7 6 5 4
SOIC/QSOP
Top View
3
2
1
20
19
FCT157T
S
1
16
VCC
I0a
I0a
2
15
S
I1a
3
14
E
I0d
NC
Ya
4 FCT157T 13
I1d
VCC
I0b
5
12
E
I1b
6
11
Yd
I0c
Yb
7
10
I1c
GND
8
9
Yc
Yc
Yd
I 0d
Yb
Yd
NC
I 1d
Ya
I 0c
14 1516 17 18
Logic Symbol
E
I0a
I1a
S
I0b
I1b
I0c
I1c
I0d
I1d
FCT157T
Ya
Yb
Yc
Yd
FCT157T–1
Copyright
© 2000, Texas Instruments Incorporated
CY54/74FCT157T
Maximum Ratings[2,3]
Pin Description
Name
Description
S
Common Select Input
E
Enable Inputs (Active LOW)
I0
Data Inputs from Source 0
I1
Data Inputs from Source 1
Y
Non-Inverted Output
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ..................................... −65°C to +150°C
Ambient Temperature with
Power Applied .................................................. −65°C to +135°C
Supply Voltage to Ground Potential..................−0.5V to +7.0V
DC Input Voltage .................................................−0.5V to +7.0V
DC Output Voltage ..............................................−0.5V to +7.0V
Function Table[1]
DC Output Current (Maximum Sink Current/Pin) ...... 120 mA
Outputs
Power Dissipation .......................................................... 0.5W
S
Inputs
I0
I1
Y
H
X
X
X
L
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
L
H
X
L
L
Operating Range
L
H
X
H
H
L
L
L
X
L
Range
L
L
H
X
H
Commercial
Military[4]
E
Ambient
Temperature
VCC
All
−40°C to +85°C
5V ± 5%
All
−55°C to +125°C
5V ± 10%
Range
Electrical Characteristics Over the Operating Range
Parameter
VOH
VOL
Description
Output HIGH Voltage
Output LOW Voltage
Test Conditions
Min.
Typ.[5]
Max.
Unit
VCC=Min., IOH=−32 mA
Com’l
2.0
V
VCC=Min., IOH=−15 mA
Com’l
2.4
3.3
V
VCC=Min., IOH=−12 mA
Mil
2.4
3.3
V
VCC=Min., IOL=64 mA
Com’l
0.3
0.55
V
VCC=Min., IOL=32 mA
Mil
0.3
0.55
V
VIH
Input HIGH Voltage
2.0
V
VIL
Input LOW Voltage
VH
Hysteresis[6]
All inputs
0.2
VIK
Input Clamp Diode Voltage
VCC=Min., IIN=−18 mA
−0.7
II
Input HIGH Current
IIH
0.8
V
V
−1.2
V
VCC=Max., VIN=VCC
5
µA
Input HIGH Current
VCC=Max., VIN=2.7V
±1
µA
IIL
Input LOW Current
VCC=Max., VIN=0.5V
±1
µA
IOZH
Off State HIGH-Level Output
Current
VCC = Max., VOUT = 2.7V
10
µA
IOZL
Off State LOW-Level
Output Current
VCC = Max., VOUT = 0.5V
−10
µA
IOS
Output Short Circuit Current[7]
VCC=Max., VOUT=0.0V
−225
mA
IOFF
Power-Off Disable
VCC=0V, VOUT=4.5V
±1
µA
−60
−120
Note:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care
2. Unless otherwise noted, these limits are over the operating free-air temperature range.
3. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.
4. TA is the “instant on” case temperature.
5. Typical values are at VCC=5.0V, TA=+25˚C ambient.
6. This parameter is specified but not tested.
7. Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample
and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter
tests, IOS tests should be performed last.
2
CY54/74FCT157T
Capacitance[6]
Parameter
Description
Typ.[5]
Max.
Unit
CIN
Input Capacitance
5
10
pF
COUT
Output Capacitance
9
12
pF
Power Supply Characteristics
Parameter
ICC
Description
Quiescent Power Supply Current
Test Conditions
VCC=Max., VIN≤0.2V, VIN≥VCC−0.2V
Typ.[5]
Max.
Unit
0.1
0.2
mA
∆ICC
Quiescent Power Supply Current
(TTL inputs HIGH)
VCC=Max., VIN=3.4V,
f1=0, Outputs Open
0.5
2.0
mA
ICCD
Dynamic Power Supply Current[9]
VCC=Max., One Input Toggling,
50% Duty Cycle, Outputs Open,
OE=GND, VIN≤0.2V or VIN≥VCC−0.2V
0.06
0.12
mA/MHz
IC
Total Power Supply Current[10]
VCC=Max., 50% Duty Cycle,
Outputs Open,
One Input Toggling at f1=10 MHz,
OE=GND, VIN≤0.2V or VIN≥VCC−0.2V
0.7
1.4
mA
VCC=Max., 50% Duty Cycle,
Outputs Open,
One Input Toggling at f1=10 MHz,
OE=GND, VIN=3.4V or VIN=GND
1.0
2.4
mA
VCC=Max., 50% Duty Cycle,
Outputs Open,
Four Bits Toggling at f1=2.5 MHz,
OE=GND, VIN≤0.2V or VIN≥VCC−0.2V
0.7
1.4[11]
mA
VCC=Max., 50% Duty Cycle,
Outputs Open,
Four Bits Toggling at f1=2.5 MHz,
OE=GND, VIN=3.4V or VIN=GND
1.7
5.4[11]
mA
[8]
Notes:
8. Per TTL driven input (VIN=3.4V); all other inputs at VCC or GND.
9. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
= IQUIESCENT + IINPUTS + IDYNAMIC
10. IC
IC
= ICC+∆ICCDHNT+ICCD(f0/2 + f1N1)
ICC = Quiescent Current with CMOS input levels
∆ICC = Power Supply Current for a TTL HIGH input (VIN=3.4V)
= Duty Cycle for TTL inputs HIGH
DH
= Number of TTL inputs at DH
NT
ICCD = Dynamic Current caused by an input transition pair (HLH or LHL)
= Clock frequency for registered devices, otherwise zero
f0
= Input signal frequency
f1
= Number of inputs changing at f1
N1
All currents are in milliamps and all frequencies are in megahertz.
11. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.
3
CY54/74FCT157T
Switching Characteristics Over the Operating Range
FCT157T
FCT157AT
Commercial
Parameter
Description
Military
FCT157CT
Commercial
Commercial
Min.[12]
Max.
Min.[12]
Max.
Min.[12]
Max.
Min.[12]
Max.
Unit
Fig.
No.[13}
tPLH
tPHL
Propagation Delay
I to Y
1.5
6.0
1.5
5.8
1.5
5.0
1.5
4.3
ns
1, 3
tPLH
tPHL
Propagation Delay
E to Y
1.5
10.5
1.5
7.4
1.5
6.0
1.5
4.8
ns
1, 5
tPLH
tPHL
Propagation Delay
S to Y
1.5
10.5
1.5
8.1
1.5
7.0
1.5
5.2
ns
1, 3
Ordering Information
Speed
(ns)
4.3
5.0
5.8
Ordering Code
Package
Name
Package Type
CY74FCT157CTQCT
Q1
16-Lead (150-Mil) QSOP
CY74FCT157CTSOC/SOCT
S1
16-Lead (300-Mil) Molded SOIC
CY74FCT157ATQCT
Q1
16-Lead (150-Mil) QSOP
CY74FCT157ATSOC/SOCT
S1
16-Lead (300-Mil) Molded SOIC
CY54FCT157ATLMB
L61
20-Pin Square Leadless Chip Carrier
Note:
12. Minimum limits are specified but not tested on Propagation Delays.
13. See “Parameter Measurement Information” in the General Information Section
Document #: 38−00288-C
Package Diagrams
20-Pin Square Leadless Chip Carrier L61
MIL−STD−1835 C−2A
4
Operating
Range
Commercial
Commercial
Military
CY54/74FCT157T
Package Diagrams (continued)
16-Lead Quarter Size Outline Q1
16-Lead Molded SOIC S1
5
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