CY74FCT138TQC [CYPRESS]
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| 型号： | CY74FCT138TQC |
| 厂家： | 
CYPRESS |
| 描述： | 暂无描述 解码器 |
| 文件： | 总6页 (文件大小：158K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1CY54/74FCT138T
fax id: 7013
CY54/74FCT138T
1-of-8 Decoder
Source current 32 mA (Com’l),
Features
12 mA (Mil)
• Function, pinout, and drive compatible with FCT and
F logic
• Dual 1-of-8 decoder with enables
Functional Description
• FCT-C speed at 5.0 ns max. (Com’l),
FCT-A speed at 5.8 ns max. (Com’l)
The FCT138T is a 1-of-8 decoder. The FCT138T accepts
three binary weighted inputs (A , A , A ) and, when enabled,
• Reduced V
(typically = 3.3V) versions of equivalent
OH
0
1
2
FCT functions
provides eight mutually exclusive active LOW outputs
(O –O ). The FCT138T features three enable inputs, two
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-off disable feature
• ESD > 2000V
• Matched rise and fall times
• Fully compatible with TTL input and output logic levels
• Extended commercial range of −40°C to +85°C
0
7
active LOW (E , E ) and one active HIGH (E ).
1
2
3
All inputs will be HIGH unless E and E are LOW and E is
1
2
3
HIGH. This multiple enable function allows easy parallel
expansion of the device to a 1-of-32 (5 lines to 32 lines)
decoder with just four FCT138T devices and one inverter.
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
• Sink current
64 mA (Com’l),
32 mA (Mil)
Logic Block Diagram
Pin Configurations
E
1
E E
2 3
LCC
A
2
A
1
A
0
DIP/SOIC/QSOP
Top View
Top View
A
1
V
0
16
15
14
13
12
CC
7
6 5 4
8
A
1
2
3
4
O
O
O
O
O
O
O
O
7
A
1
0
1
2
3
4
5
6
9
3
2
A
2
GND
NC
A
0
10
11
E
1
NC
V
1
E
2
O
6
CC
12
13
20
19
5
6
7
8
O
0
O
5
E
3
11
10
9
15 16 17 18
14
O
7
GND
FCT138T–2
FCT138T–3
O
7
O
6
O
5
O
4
O
3
O
2
O
1
O
0
FCT138T–1
Pin Description
Name
Description
A
Address Inputs
E −E
Enable Inputs (Active LOW)
Enable Input (Active HIGH)
Outputs
1
2
E
3
O
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
•
CA 95134
•
408-943-2600
May 1994 – Revised March 17, 1997
CY54/74FCT138T
]
Function Table[1]
Inputs
Outputs
E
E
E
A
A
A
O
O
O
O
O
O
O
O
7
1
2
3
0
1
2
0
1
2
3
4
5
6
H
X
X
X
X
X
H
H
H
H
H
H
H
H
X
X
H
X
X
L
X
X
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
L
H
H
L
L
L
L
L
H
L
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
L
H
H
H
H
L
H
H
H
L
H
H
H
H
H
Maximum Ratings[2, 3]
Power Dissipation.......................................................... 0.5W
Static Discharge Voltage ........................................... >2001V
(per MIL-STD-883, Method 3015)
(Above which the useful life may be impaired. For user
guidelines, not tested.)
Storage Temperature ................................. –65°C to +150°C
Operating Range
Ambient Temperature with
Power Applied............................................. –65°C to +135°C
Ambient
Range
Range
Temperature
–40°C to +85°C
–55°C to +125°C
V
CC
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
DC Output Current (Maximum Sink Current/Pin).......120 mA
Commercial All
5V ± 5%
[4]
Military
All
5V ± 10%
Electrical Characteristics Over the Operating Range
[5]
Parameter
Description
Output HIGH Voltage
Output HIGH Voltage
Output HIGH Voltage
Output LOW Voltage
Test Conditions
Min.
2.0
Typ.
Max.
Unit
V
V
V
V
V
V
V
=Min., I =–32 mA
Com’l
Com’l
Mil
OH
OH
OH
OL
CC
CC
CC
CC
CC
OH
V
V
V
=Min., I =–15 mA
2.4
3.3
3.3
0.3
0.3
V
OH
=Min., I =–12 mA
2.4
V
OH
=Min., I =64 mA
Com’l
Mil
0.55
0.55
V
OL
=Min., I =32 mA
V
OL
V
V
V
V
Input HIGH Voltage
Input LOW Voltage
2.0
V
IH
IL
H
0.8
V
[6]
Hysteresis
All inputs
0.2
V
Input Clamp Diode Voltage
Input HIGH Current
V
V
V
V
V
V
=Min., I =–18 mA
–0.7
–1.2
5
V
IK
CC
CC
CC
CC
CC
CC
IN
I
I
I
I
I
=Max., V =V
CC
µA
µA
µA
mA
µA
I
IN
Input HIGH Current
=Max., V =2.7V
±1
IH
IN
Input LOW Current
=Max., V =0.5V
±1
IL
IN
[7]
Output Short Circuit Current
Power-Off Disable
=Max., V
=0.0V
–60
–120
–225
±1
OS
OFF
OUT
=0V, V
=4.5V
OUT
Notes:
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. A is the “instant on” case temperature.
T
5. Typical values are at VCC=5.0V, TA=+25°C ambient.
6. This parameter is guaranteed 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
CY54/74FCT138T
Capacitance[6]
[5]
Parameter
Description
Typ.
5
Max.
10
Unit
pF
C
C
Input Capacitance
Output Capacitance
IN
9
12
pF
OUT
Power Supply Characteristics
[5]
Parameter
Description
Test Conditions
=Max., V <0.2V,
Typ.
Max.
Unit
I
Quiescent Power Supply Current
V
V
0.1
0.5
0.2
mA
CC
CC
IN
> V –0.2V
IN
CC
[8]
∆I
Quiescent Power Supply Current
(TTL inputs)
V
=Max., V =3.4V,
2.0
mA
CC
CC
IN
f =0, Outputs Open
1
I
I
Dynamic Power Supply
Current
V
=Max., One Input Toggling,
CC
0.06
0.12 mA/MHz
CCD
[9]
50% Duty Cycle, Outputs Open,
V
< 0.2V or V > V –0.2V
IN
IN CC
[10]
Total Power Supply Current
V
=Max., f =10 MHz,
0.7
1.0
1.4
2.4
mA
mA
C
CC
1
50% Duty Cycle, Outputs Open, Toggle
E , E , or E , One Output Toggling
V
1
2
3
,
< 0.2V or V > V –0.2V
IN
IN CC
V
=Max., f =10 MHz,
CC
1
50% Duty Cycle, Outputs Open, Toggle
E , E , or E , One Output Toggling,
1
2
3
V =3.4V or V =GND
IN
IN
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.
10. IC
IC
=
=
=
=
=
=
=
=
=
=
IQUIESCENT + IINPUTS + IDYNAMIC
ICC+∆ICCDHNT+ICCD(f0/2 + f1N1)
Quiescent Current with CMOS input levels
Power Supply Current for a TTL HIGH input (VIN=3.4V)
Duty Cycle for TTL inputs HIGH
ICC
∆ICC
DH
NT
ICCD
f0
Number of TTL inputs at DH
Dynamic Current caused by an input transition pair (HLH or LHL)
Clock frequency for registered devices, otherwise zero
Input signal frequency
f1
N1
Number of inputs changing at f1
All currents are in milliamps and all frequencies are in megahertz.
3
CY54/74FCT138T
Switching Characteristics Over the Operating Range
FCT138T
FCT138AT
Military
Commercial
Military
Commercial
Fig.
[11]
[11]
[11]
[11]
[12]
Parameter
Description
Min.
Max. Min.
Max. Min.
Max. Min.
Max.
Unit
No.
t
t
Propagation Delay
A to O
1.5
1.5
1.5
12.0
12.5
12.5
1.5
9.0
9.0
9.0
1.5
7.8
8.0
8.0
1.5
1.5
1.5
5.8
ns
1, 2
1, 5
1, 5
PLH
PHL
t
t
Propagation Delay
1.5
1.5
1.5
1.5
5.9
5.9
ns
ns
PLH
PHL
E or E to O
1
2
t
t
Propagation Delay
E to O
PLH
PHL
3
FCT138CT
Military
Commercial
[11]
[11]
[12]
Parameter
Description
Propagation Delay A to O
Min.
Max. Min.
Max.
Unit Fig. No.
t
t
1.5
1.5
1.5
6.0
6.1
6.1
1.5
1.5
1.5
5.0
ns
ns
ns
1, 2
1, 5
1, 5
PLH
PHL
t
t
Propagation Delay E or E to O
5.0
5.0
PLH
PHL
1
2
t
t
Propagation Delay E to O
3
PLH
PHL
Ordering Information
Speed
(ns)
Package
Name
Operating
Range
Ordering Code
Package Type
5.0
CY74FCT138CTQC
CY74FCT138CTSOC
CY74FCT138ATPC
CY74FCT138ATQC
CY74FCT138ATSOC
CY54FCT138CTDMB
CY54FCT138CTLMB
CY74FCT138TSOC
Q1
S1
P1
Q1
S1
D2
L61
S1
16-Lead (150-Mil) QSOP
Commercial
16-Lead (300-Mil) Molded SOIC
16-Lead (300-Mil) Molded DIP
16-Lead (150-Mil) QSOP
5.8
6.0
Commercial
16-Lead (300-Mil) Molded SOIC
16-Lead (300-Mil) CerDIP
Military
20-Pin Square Leadless Chip Carrier
16-Lead (300-Mil) Molded SOIC
9.0
Commercial
Notes:
11. Minimum limits are guaranteed but not tested on Propagation Delays.
12. See “Parameter Measurement Information” in the General Information Section.
Document #: 38-00297-B
4
CY54/74FCT138T
Package Diagrams
16-Lead (300-Mil) CerDIP D2
MIL-STD-1835 D-2 Config.A
20-Pin Square Leadless Chip Carrier L61
MIL-STD-1835 C-2A
16-Lead (300-Mil) Molded DIP P1
5
CY54/74FCT138T
Package Diagrams (continued)
16-Lead Quarter Size Outline Q1
16-Lead Molded SOIC S1
© Cypress Semiconductor Corporation, 1997. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of anycircuitry other than circuitry embodied in a CypressSemiconductor product. Nor does it conveyor imply any license under patent or other rights. CypressSemiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
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