CY74FCT162374TPVCT [TI]
16-Bit Registers; 16位寄存器
| 型号： | CY74FCT162374TPVCT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 16-Bit Registers |
| 文件： | 总7页 (文件大小：64K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1CY74FCT162374T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT16374T
CY74FCT162374T
SCCS055 - August 1994 - Revised March 2000
16-Bit Registers
Features
Functional Description
• FCT-E speed at 3.7 ns
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for significantly improved
noise characteristics
• Typical output skew < 250 ps
• ESD > 2000V
• TSSOP (19.6-mil pitch) and SSOP (25-mil pitch)
packages
• Industrial temperature range of −40˚C to +85˚C
• VCC = 5V ± 10%
CY74FCT16374T and CY74FCT162374T are 16-bit D-type
registers designed for use as buffered registers in high-speed,
low power bus applications. These devices can be used as two
independent 8-bit registers or as a single 16-bit register by
connecting the output Enable (OE) and Clock (CLK) inputs.
Flow-through pinout and small shrink packaging aid in
simplifying board layout. The output buffers are designed with
power-off disable feature that allows live insertion of boards.
The CY74FCT16374T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
The CY74FCT162374T has 24-mA balanced output drivers
with current limiting resistors in the outputs. This reduces the
need for external terminating resistors and provides for
minimal undershoot and reduced ground bounce. The
CY74FCT162374T is ideal for driving transmission lines.
CY74FCT16374T Features:
• 64 mA sink current, 32 mA source current
• Typical VOLP (ground bounce) <1.0V at VCC = 5V,
TA = 25˚C
CY74FCT162374T Features:
• Balanced 24 mA output drivers
• Reduced system switching noise
• Typical VOLP (ground bounce) <0.6V at VCC = 5V,
TA= 25˚C
Logic Block Diagrams
Pin Configuration
SSOP/TSSOP
Top View
1
2
3
4
48
47
46
OE
O
CLK
1
1
1
D
1
1
1
2
O
D
2
1
1
GND
O
GND
D
45
44
43
42
41
OE
OE
2
1
5
1
1
3
4
1
1
3
4
O
D
6
CLK
CLK
2
1
V
CC
V
CC
7
O
5
O
6
D
D
1
1
1
1
5
6
8
D
C
D
C
D
1
D
1
1
2
9
40
39
38
37
36
35
34
33
32
31
O
1
O
1
1
2
GND
O
GND
D
10
11
1
1
7
8
1
1
7
8
O
D
12
13
O
O
D
D
2
2
1
2
2
1
2
14
15
16
17
18
2
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
GND
GND
O
3
O
4
D
D
2
2
3
FCT162374-1
FCT162374-2
2
2
4
V
CC
V
CC
O
5
D
5
19
20
21
22
23
24
30
29
28
27
26
25
2
2
2
2
O
6
D
6
GND
O
GND
D
2
2
7
8
2
7
8
O
D
2
2
OE
CLK
2
FCT162374-3
Copyright © 2000, Texas Instruments Incorporated
CY74FCT16374T
CY74FCT162374T
Maximum Ratings[2, 3]
Function Table[1]
Inputs
Outputs
(Above which the useful life may be impaired. For user
guidelines, not tested.)
D
X
X
L
CLK
L
OE
H
O
Z
Z
L
Function
Storage Temperature .............................. −55°C to +125°C
High-Z
Ambient Temperature with
Power Applied.......................................... −55°C to +125°C
H
H
L
Load
Register
DC Input Voltage................................................. −0.5V to +7.0V
DC Output Voltage.............................................. −0.5V to +7.0V
H
L
L
H
H
H
Z
Z
DC Output Current
(Maximum Sink Current/Pin)............................−60 to +120 mA
H
Power Dissipation ..........................................................1.0W
Pin Description
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
Name
Description
D
Data Inputs
Clock Inputs
Operating Range
CLK
OE
O
Ambient
Temperature
Three-State Output Enable Inputs (Active LOW)
Three-State Outputs
Range
Industrial
VCC
−40°C to +85°C
5V ± 10%
Electrical Characteristics Over the Operating Range
Parameter
Description
Input HIGH Voltage
Test Conditions
Min.
Typ.[4]
Max.
Unit
VIH
VIL
VH
VIK
IIH
2.0
V
V
Input LOW Voltage
Input Hysteresis[5]
0.8
100
mV
V
Input Clamp Diode Voltage
Input HIGH Current
Input LOW Current
VCC=Min., IIN=−18 mA
VCC=Max., VI=VCC
−0.7
−1.2
±1
µA
µA
µA
IIL
VCC=Max., VI=GND
VCC=Max., VOUT=2.7V
±1
IOZH
High Impedance Output Current
(Three-State Output pins)
±1
IOZL
High Impedance Output Current
(Three-State Output pins)
VCC=Max., VOUT=0.5V
±1
µA
IOS
IO
Short Circuit Current[6]
Output Drive Current[6]
Power-Off Disable
VCC=Max., VOUT=GND
VCC=Max., VOUT=2.5V
VCC=0V, VOUT≤4.5V[7]
−80
−50
−140
−200
−180
±1
mA
mA
µA
IOFF
Output Drive Characteristics for CY74FCT16374T
Parameter
Description
Test Conditions
VCC=Min., IOH=−3 mA
Min.
2.5
Typ.[4]
3.5
Max.
Unit
V
VOH
Output HIGH Voltage
VCC=Min., IOH=−15 mA
VCC=Min., IOH=−32 mA
VCC=Min., IOL=64 mA
2.4
3.5
V
2.0
3.0
V
VOL
Output LOW Voltage
0.2
0.55
V
Notes:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = HIGH Impedance.
= LOW-to-HIGH Transition.
2. Operation beyond the limits set forth may impair the useful life of the device. 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. Typical values are at VCC= 5.0V, TA= +25˚C ambient.
5. This parameter is specified but not tested.
6. 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.
7. Tested at +25˚C.
2
CY74FCT16374T
CY74FCT162374T
Output Drive Characteristics for CY74FCT162374T
Parameter
IODL
Description
Output LOW Current[6]
Output HIGH Current[6]
Output HIGH Voltage
Output LOW Voltage
Test Conditions
VCC=5V, VIN=VIH or VIL, VOUT=1.5V
VCC=5V, VIN=VIH or VIL, VOUT=1.5V
VCC=Min., IOH=−24 mA
Min.
60
Typ.[4]
115
Max.
150
Unit
mA
mA
V
IODH
−60
2.4
−115
3.3
−150
VOH
VOL
VCC=Min., IOL=24 mA
0.3
0.55
V
Capacitance[5] (TA = +25˚C, f = 1.0 MHz)
Parameter
CIN
Description
Input Capacitance
Output Capacitance
Test Conditions
VIN = 0V
Typ.[4] Max.
Unit
pF
4.5
5.5
6.0
8.0
COUT
VOUT = 0V
pF
Power Supply Characteristics
Parameter
Description
Test Conditions
Typ.[4]
Max.
Unit
ICC
Quiescent Power Supply Current VCC=Max.
V
V
IN≤0.2V,
IN≥VCC−0.2V
5
500
µA
∆ICC
QuiescentPowerSupplyCurrent VCC=Max.
(TTL inputs HIGH)
VIN=3.4V[8]
0.5
60
1.5
mA
ICCD
Dynamic Power Supply
Current[9]
VCC=Max., One Input
Toggling, 50% Duty Cycle,
Outputs Open, OE=GND
VIN=VCC or
VIN=GND
100
µA/
MHz
IC
Total Power Supply Current[10]
VCC=Max., f0=10 MHz,
f1=5 MHz, 50% Duty Cycle,
Outputs Open, One Bit
Toggling, OE=GND
VIN=VCC or
VIN=GND
0.6
1.1
3.0
7.5
1.5
3.0
mA
mA
mA
mA
VIN=3.4V or
VIN=GND
VCC=Max., f0=10 MHz,
f1=2.5 MHz, 50% Duty
Cycle, Outputs Open, Sixteen
Bits Toggling, OE=GND
VIN=VCC or
VIN=GND
5.5[11]
19.0[11]
VIN=3.4V or
VIN=GND
Note:
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.
11. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.
3
CY74FCT16374T
CY74FCT162374T
Switching Characteristics Over the Operating Range[12]
CY74FCT16374T
CY74FCT162374T
CY74FCT16374AT
CY74FCT162374AT
Fig.
Parameter
tPLH
tPHL
Description
Propagation Delay
CLK to O
Min.
Max.
Min.
Max.
Unit
No.[13]
2.0
10.0
2.0
6.5
ns
1, 5
tPZH
tPZL
Output Enable Time
1.5
1.5
2.0
1.5
5.0
12.5
8.0
1.5
1.5
2.0
1.5
5.0
6.5
5.5
ns
ns
ns
ns
ns
ns
1, 7, 8
tPHZ
tPLZ
Output Disable Time
1, 7, 8
tSU
Set-Up Time HIGH or LOW,
D to CLK
4
4
5
tH
Hold Time HIGH or LOW,
D to CLK
tW
CLK Pulse Width
HIGH or LOW
Output Skew[14]
tSK(O)
0.5
0.5
CY74FCT16374CT
CY74FCT162374CT
CY74FCT16374ET
CY74FCT162374ET
Fig.
Parameter
Description
Min.
Max.
Min.
Max.
Unit
No.[13]
tPLH
tPHL
Propagation Delay
CLK to O
2.0
5.2
2.0
3.7
ns
1, 5
tPZH
tPZL
Output Enable Time
1.5
1.5
2.0
1.5
3.3
5.5
5.0
1.5
1.5
1.5
0.0
3.0
4.4
3.6
ns
ns
ns
ns
ns
ns
1, 7, 8
tPHZ
tPLZ
Output Disable Time
1, 7, 8
tSU
Set-Up Time HIGH or LOW,
D to CLK
4
4
5
tH
Hold Time HIGH or LOW,
D to CLK
tW
CLK Pulse Width
HIGH or LOW
Output Skew[14]
tSK(O)
0.5
0.5
Notes:
12. Minimum limits are specified but not tested on Propagation Delays.
13. See “Parameter Measurement Information” in the General Information section.
14. Skew between any two outputs of the same package switching in the same direction. This parameter is ensured by design.
4
CY74FCT16374T
CY74FCT162374T
Ordering Information CY74FCT16374T
Speed
Package
Name
Operating
Range
(ns)
Ordering Code
Package Type
48-Lead (240-Mil) TSSOP
3.7
CY74FCT16374ETPACT
Z48
O48
Z48
O48
Z48
O48
O48
Industrial
Industrial
Industrial
Industrial
CY74FCT16374ETPVC/PVCT
CY74FCT16374CTPACT
CY74FCT16374CTPVC/PVCT
CY74FCT16374ATPACT
48-Lead (300-Mil) SSOP
48-Lead (240-Mil) TSSOP
48-Lead (300-Mil) SSOP
48-Lead (240-Mil) TSSOP
48-Lead (300-Mil) SSOP
48-Lead (300-Mil) SSOP
5.2
6.5
CY74FCT16374ATPVC/PVCT
CY74FCT16374TPVC/PVCT
10.0
Ordering Information CY74FCT162374T
Speed
(ns)
Package
Operating
Range
Ordering Code
74FCT162374ETPACT
CY74FCT162374ETPVC
74FCT162374ETPVCT
74FCT162374CTPACT
CY74FCT162374CTPVC
74FCT162374CTPVCT
74FCT162374ATPACT
CY74FCT162374ATPVC
74FCT162374ATPVCT
CY74FCT162374TPVC/PVCT
Name
Package Type
3.7
Z48
48-Lead (240-Mil) TSSOP
48-Lead (300-Mil) SSOP
48-Lead (300-Mil) SSOP
48-Lead (240-Mil) TSSOP
48-Lead (300-Mil) SSOP
48-Lead (300-Mil) SSOP
48-Lead (240-Mil) TSSOP
48-Lead (300-Mil) SSOP
48-Lead (300-Mil) SSOP
48-Lead (300-Mil) SSOP
Industrial
Industrial
Industrial
Industrial
O48
O48
Z48
5.2
O48
O48
Z48
6.5
O48
O48
O48
10.0
5
CY74FCT16374T
CY74FCT162374T
Package Diagrams
48-Lead Shrunk Small Outline PackageO48
48-Lead Thin Shrunk Small Outline Package Z48
6
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subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
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BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
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Copyright 2000, Texas Instruments Incorporated
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