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Part: CY74FCT16374TPVCT
Category:
Logic
-> Flip-Flops
-> D-Type (3-State) Flip-Flops
Description: ti CY74FCT16374T, 16-Bit Edge-triggered D-type Flip-flops With 3-State Output
Company: Texas Instruments, Inc.
Datasheet: Download CY74FCT16374TPVCT datasheet File size : 207 kB
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Datasheet text preview:
1CY74FCT162374T
Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered.
CY74FCT16374T CY74FCT162374T
SCCS055C - August 1994 - Revised September 2001
16-Bit Registers
Functional Description
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. This device is fully specified for par tial-power-down applications using Ioff. The Ioff circuitr y disables the outputs, preventing damaging current backflow through the device when it is powered down. 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.
Features
· Ioff supports partial-power-down mode operation · Edge-rate control circuitry for significantly improved noise characteristics · Typical output skew 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 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
1OE 1O1 1O2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1CLK 1 D1 1 D2
1OE
2OE
GND 1O3
1O4
GND 1 D3
1 D4
1CLK 1D1
2CLK
D
1O1
2 D1
D
2O1
VCC 1O5
1O6
VCC 1 D5
1 D6
C
C
GND
1O7 1O8 2O1
GND
1 D7 1 D8 2 D1 2 D2
TO 7 OTHER CHANNELS
FCT162374-1
TO 7 OTHER CHANNELS
FCT162374-2
2O2
GND 2O3
2O4
GND 2 D3
2 D4
VCC 2O5
2O6
VCC 2 D5
2 D6
GND 2O7
2O8 2OE
GND 2 D7
2 D8 2CLK
FCT162374-3
Copyright
© 2001, Texas Instruments Incorporated
CY74FCT16374T CY74FCT162374T
Function Table[1]
Inputs D X X L H L H CLK L H OE H H L L H H Outputs O Z Z L H Z Z Load Register Function High-Z
Maximum Ratings[2, 3]
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ...... -55°C to +125°C Ambient Temperature with Power Applied ......... -55°C to +125°C DC Input Voltage....... -0.5V to +7.0V DC Output Voltage.... -0.5V to +7.0V DC Output Current (Maximum Sink Current/Pin)....-60 to +120 mA Power Dissipation .......... 1.0W Static Discharge Voltage...........>2001V (per MIL-STD-883, Method 3015)
Pin Description
Name D CLK OE O Data Inputs Clock Inputs Three-State Output Enable Inputs (Active LOW) Three-State Outputs Description
Operating Range
Range Industrial Ambient Temperature -40°C to +85°C VCC 5V ± 10%
Electrical Characteristics Over the Operating Range
Parameter VIH VIL VH VIK IIH IIL IOZH IOZL IOS IO IOFF Description Input HIGH Voltage Input LOW Voltage Input Hysteresis
[5]
Test Conditions
Min. 2.0
Typ.[4]
Max. 0.8
Unit V V mV V µA µA µA µA mA mA µA
100 VCC=Min., IIN= -18 mA VCC=Max., VI=VCC VCC=Max., VI=GND VCC=Max., VOUT=2.7V VCC=Max., VOUT=0.5V VCC=Max., VOUT=GND VCC=Max., VOUT=2.5V VCC=0V, VOUT4.5V
[7]
Input Clamp Diode Voltage Input HIGH Current Input LOW Current High Impedance Output Current (Three-State Output pins) High Impedance Output Current (Three-State Output pins) Shor t Circuit Current[6] Output Drive Current Power-Off Disable
[6]
-0.7
-1.2 ±1 ±1 ±1 ±1
-80 -50
-140
-200 -180 ±1
Output Drive Characteristics for CY74FCT16374T
Parameter VOH Description Output HIGH Voltage Test Conditions VCC=Min., IOH=-3 mA VCC=Min., IOH=-15 mA VCC=Min., IOH=-32 mA VOL Output LOW Voltage VCC=Min., IOL=64 mA Min. 2.5 2.4 2.0 Typ.[4] 3.5 3.5 3.0 0.2 0.55 Max. Unit V V V 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 for th 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 shor ted at a time. Duration of shor t 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.
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CY74FCT16374T CY74FCT162374T
Output Drive Characteristics for CY74FCT162374T
Parameter IODL IODH VOH VOL Description Output LOW Current
[6] [6]
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 VCC=Min., IOL=24 mA
Min. 60 -60 2.4
Typ.[4] 115 -115 3.3 0.3
Max. 150 -150 0.55
Unit mA mA V V
Output HIGH Current Output HIGH Voltage Output LOW Voltage
Capacitance[5] (TA = +25°C, f = 1.0 MHz)
Parameter CIN COUT Description Input Capacitance Output Capacitance VIN = 0V VOUT = 0V Test Conditions Typ.[4] 4.5 5.5 Max. 6.0 8.0 Unit pF pF
Power Supply Characteristics
Parameter ICC ICC ICCD Description Quiescent Power Supply Current VCC=Max. Quiescent Power Supply Current (TTL inputs HIGH) Dynamic Power Supply Current[9] Total Power Supply Current[10] VCC=Max. VCC=Max., One Input Toggling, 50% Duty Cycle, Outputs Open, OE=GND VCC=Max., f0=10 MHz, f1=5 MHz, 50% Duty Cycle, Outputs Open, One Bit Toggling, OE=GND VCC=Max., f0=10 MHz, f1=2.5 MHz, 50% Duty Cycle, Outputs Open, Sixteen Bits Toggling, OE=GND Test Conditions VIN0.2V, VINVCC-0.2V VIN=3.4V[8] VIN=VCC or VIN=GND VIN=VCC or VIN=GND VIN=3.4V or VIN=GND VIN=VCC or VIN=GND VIN=3.4V or VIN=GND Typ.[4] 5 0.5 60 Max. 500 1.5 100 Unit µA mA µA/ MHz mA mA mA mA
IC
0.6 1.1 3.0 7.5
1.5 3.0 5.5[11] 19.0[11]
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. = 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.
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CY74FCT16374T CY74FCT162374T
Switching Characteristics Over the Operating Range[12]
CY74FCT16374T CY74FCT162374T Parameter tPLH tPHL tPZH tPZL tPHZ tPLZ tSU tH tW tSK(O) Description Propagation Delay CLK to O Output Enable Time Output Disable Time Set-Up Time HIGH or LOW, D to CLK Hold Time HIGH or LOW, D to CLK CLK Pulse Width HIGH or LOW Output Skew[14] Min. 2.0 1.5 1.5 2.0 1.5 5.0 0.5 Max. 10.0 12.5 8.0 CY74FCT16374AT CY74FCT162374AT Min. 2.0 1.5 1.5 2.0 1.5 5.0 0.5 Max. 6.5 6.5 5.5 Unit ns ns ns ns ns ns ns Fig. No.[13] 1, 5 1, 7, 8 1, 7, 8 4 4 5
CY74FCT16374CT CY74FCT162374CT Parameter tPLH tPHL tPZH tPZL tPHZ tPLZ tSU tH tW tSK(O) Propagation Delay CLK to O Output Enable Time Output Disable Time Set-Up Time HIGH or LOW, D to CLK Hold Time HIGH or LOW, D to CLK CLK Pulse Width HIGH or LOW Output Skew[14] Description Min. 2.0 1.5 1.5 2.0 1.5 3.3 0.5 Max. 5.2 5.5 5.0 Unit ns ns ns ns ns ns ns
Fig. No.[13] 1, 5 1, 7, 8 1, 7, 8 4 4 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.
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CY74FCT16374T CY74FCT162374T
Ordering Information CY74FCT16374T
Speed (ns) 5.2 6.5 10.0 Ordering Code CY74FCT16374CTPACT CY74FCT16374CTPVC/PVCT CY74FCT16374ATPACT CY74FCT16374ATPVC/PVCT CY74FCT16374TPVC/PVCT Package Name Z48 O48 Z48 O48 O48 Package Type 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 Industrial Industrial Operating Range Industrial
Ordering Information CY74FCT162374T
Speed (ns) 5.2 Ordering Code 74FCT162374CTPACT CY74FCT162374CTPVC 74FCT162374CTPVCT 6.5 74FCT162374ATPACT CY74FCT162374ATPVC 74FCT162374ATPVCT 10.0 CY74FCT162374TPVC/PVCT Package Name Z48 O48 O48 Z48 O48 O48 O48 Package Type 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 Operating Range Industrial
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