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Part: CY74FCT163H244
Category:
Description: 16-bit Buffers/line Drivers
Company: Texas Instruments, Inc.
Datasheet: Download CY74FCT163H244 datasheet File size : 207 kB
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Datasheet text preview:
Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered.
CY74FCT163244 CY74FCT163H244
SCCS046 - December 1996 - Revised March 2000
16-Bit Buffers/Line Drivers
CY74FCT163H244 · Bus hold on data inputs · Eliminates the need for external pull-up or pull-down resistors · Devices with bus hold are not recommended for translating rail-to-rail CMOS signals to 3.3V logic levels
Features
· Low power, pin-compatible replacement for LCX and LPT families · 5V tolerant inputs and outputs · 24 mA balanced drive outputs · Power-off disable outputs permits live insertion · Edge-rate control circuitry for reduced noise · FCT-C speed at 4.1 ns · Latch-up performance exceeds JEDEC standard no. 17 · Typical output skew 2000V
Functional Description
These 16-bit buffers/line drivers are designed for use in memor y driver, clock driver, or other bus interface applications, where high-speed and low power are required. The three-state controls are designed to allow 4-bit, 8-bit or combined 16-bit operation. Flow-through pinout and small shrink packaging simplifies board layout. The CY74FCT163244 has 24-mA balanced output drivers with current limiting resistors in the outputs. The CY74FCT163H244 has "bus hold" on the data inputs, which retains the last state of the input whenever the source driving the input goes to high impedance. This eliminates the need for pull-up/down resistors and prevents floating inputs.
Logic Block Diagrams CY74FCT163244, CY74FCT163H244
1OE 3OE
Pin Configuration
SSOP/TSSOP Top View
1OE
1 2 3 4 5
48 47 46 45
2 OE 1A1 1A2
1A1
1Y1
3A1
3Y1
1Y1 1Y2
1A2
1Y2
3A2
GND
3Y2 1Y3 1Y4
GND
1A3 1A4
1A3
1Y3
3A3
3Y3
VCC 2Y1
2Y2
44 163244 6 163H244 43 42 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
VCC 2A1
2A2
1A4
1Y4
3A4
3Y4
GND
2Y3 2Y4 3Y1
GND
2A3 2A4 3A1 3A2
2OE
4OE
3Y2
GND
2A1 2Y1 4A1 4Y1 3Y3 3Y4
GND
3A3 3A4
2A2
2Y2
4A2
4Y2
VCC 4Y1
4Y2
VCC 4A1
4A2
2A3
2Y3
4A3
4Y3
GND
4Y3 4Y4 4OE
GND
4A3 4A4 3 OE
2A4
2Y4
4A4
4Y4
Copyright
© 2000, Texas Instruments Incorporated
CY74FCT163244 CY74FCT163H244
Pin Description
Name OE A Y Data Inputs[1] Three-State Outputs Description Three-State Output Enable Inputs (Active LOW)
Maximum Ratings[3,4]
(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 Supply Voltage Range .... 0.5V to +4.6V Outputs A L H X Y L H Z 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
Function Table[2]
Inputs OE L L H
Operating Range
Range Industrial Ambient Temperature 40°C to +85°C VCC 2.7V to 3.6V
Electrical Characteristics for Non Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter VIH VIL VH VIK IIH IIL IOZH IOZL IOS IOFF ICC ICC Description Input HIGH Voltage Input LOW Voltage Input Hysteresis[6] VCC=Min., IIN=18 mA VCC=Max., VI=5.5 VCC=Max., VI=GND VCC=Max., VOUT=5.5V VCC=Max., VOUT=GND VCC=Max., VOUT=GND VCC=0V, VOUT4.5V VIN0.2V, VIN>VCC0.2V VIN=VCC0.6V[8] VCC=Max. VCC=Max. 0.1 2.0 60 135 100 0.7 1.2 ±1 ±1 ±1 ±1 240 ±100 10 30 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[7] Power-Off Disable Quiescent Power Supply Current Quiescent Power Supply Current (TTL inputs HIGH) Test Conditions All Inputs Min. 2.0 Typ.[5] Max. 5.5 0.8 Unit V V mV V µA µA µA µA mA µA µA µA
Notes: 1. On the CY74FCT163H244, these pins have "bus hold." 2. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don't Care. Z = High Impedance. 3. 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. 4. With the exception of inputs with bus hold, unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground. 5. Typical values are at VCC=3.3V, TA = +25°C ambient. 6. This parameter is specified but not tested. 7. 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 shor ting 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. 8. Per TTL driven input; all other inputs at VCC or GND.
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CY74FCT163244 CY74FCT163H244
Electrical Characteristics For Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter VIH VIL VH VIK IIH IIL IBBH IBBL IBHHO IBHLO IOZH IOZL IOS IOFF ICC ICC Description Input HIGH Voltage Input LOW Voltage Input Hysteresis
[6]
Test Conditions All Inputs
Min. 2.0
Typ.[5]
Max. VCC 0.8
Unit V V mV V µA µA µA µA
100 VCC=Min., IIN=18 mA VCC=Max., VI=VCC VI=2.0V VI=0.8V 50 +50 ±500 ±1 ±1 60 135 240 ±100 +40 +350 0.7 1.2 ±100 ±100
Input Clamp Diode Voltage Input HIGH Current Input LOW Current
Bus Hold Sustain Current on Bus Hold Input[9] VCC=Min. Bus Hold Overdrive Current on Bus Hold Input[9] High Impedance Output Current (Three-State Output pins) High Impedance Output Current (Three-State Output pins) Shor t Circuit Current[7] Power-Off Disable Quiescent Power Supply Current Quiescent Power supply Current (TTL inputs HIGH)
VCC=Max., VI=1.5V VCC=Max., VOUT=VCC VCC=Max., VOUT=GND VCC=Max., VOUT=GND VCC=0V, VOUT4.5V VIN0.2V, VIN>VCC0.2V VCC=Max.
µA µA µA mA µA µA µA
VIN=VCC0.6V[8] VCC=Max.
Electrical Characteristics For Balanced Drive Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter IODL IODH VOH Description Output LOW Dynamic Current[7] Test Conditions VCC=3.3V, VIN=VIH or VIL, VOUT=1.5V VCC=3.3V, VIN=VIH or VIL, VOUT=1.5V VCC=Min., IOH= 0.1 mA VCC=3.0V, IOH= 8 mA VCC=3.0V, IOH= 24 mA VOL Output LOW Voltage VCC=Min., IOL= 0.1mA VCC=Min., IOL= 24 mA
Notes: 9. Pins with bus hold are described in Pin Description. 10. VOH = VCC 0.6V at rated current.
Min. 45 45 VCC0.2 2.4[10] 2.0
Typ.[5]
Max. 180 180
Unit mA mA V
Output HIGH Dynamic Current[7] Output HIGH Voltage
3.0 3.0 0.2 0.3 0.55
V V V
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CY74FCT163244 CY74FCT163H244
Capacitance[6](TA = +25°C, f = 1.0 MHz)
Parameter CIN COUT Description Input Capacitance Output Capacitance VIN = 0V VOUT = 0V Test Conditions Typ.[5] 4.5 5.5 Max. 6.0 8.0 Unit pF pF
Power Supply Characteristics
Parameter ICCD Description Dynamic Power Supply Current[10] Total Power Supply Current[11] Test Conditions VCC=Max., One Input Toggling, VIN=VCC or 50% Duty Cycle, VIN=GND Outputs Open, OE=GND VCC=Max., f1=10 MHz, 50% VIN=VCC or Duty Cycle, Outputs Open, One VIN=GND Bit Toggling, OE=GND VIN=VCC0.6V or VIN=GND VCC=Max., f1=2.5 MHz, 50% VIN=VCC or Duty Cycle, Outputs Open, Six- VIN=GND teen Bits Toggling, OE=GND VIN=VCC0.6V or VIN=GND
Notes: 11. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. 12. IC = IQUIESCENT + IINPUTS + IDYNAMIC 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) DH = Duty Cycle for TTL inputs HIGH NT = Number of TTL inputs at DH ICCD = Dynamic Current caused by an input transition pair (HLH or LHL) = Clock frequency for registered devices, otherwise zero f0 = Input signal frequency f1 N1 = Number of inputs changing at f1 All currents are in milliamps and all frequencies are in megahertz. 13. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.
Typ.[5] 50
Max. 75
Unit µA/MHz
IC
0.5 0.5 2.0 2.0
0.8 0.8 3.0[12] 3.3[12]
mA mA mA mA
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CY74FCT163244 CY74FCT163H244
Switching Characteristics Over the Operating Range VCC=3.0V to 3.6V[14,15]
CY74FCT163244A CY74FCT163H244A Parameter tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(O) Description Propagation Delay Data to Output Output Enable Time Output Disable Time Output Skew[17] Min. 1.5 1.5 1.5 Max. 4.8 6.2 5.6 0.5 CY74FCT163244C CY74FCT163H244C Min. 1.5 1.5 1.5 Max. 4.1 5.8 5.2 0.5 Unit ns ns ns ns Fig. No.[16] 1, 3 1, 7, 8 1, 7, 8 --
Notes: 14. Minimum limits are specified but not tested on Propagation Delays. 15. For VCC =2.7, propagation delay, output enable and output disable times should be degraded by 20%. 16. See "Parameter Measurement Information" in the General Information section. 17. Skew between any two outputs of the same package switching in the same direction. This parameter is ensured by design.
Ordering Information CY74FCT163244
Speed (ns) 4.1 4.8 Ordering Code CY74FCT163244CPACT CY74FCT163244CPVC/PVCT CY74FCT163244APACT CY74FCT163244APVC/PVCT Package Name Z48 O48 Z48 O48 Package Type 48-Lead (240-Mil) TSSOP 48-Lead (300-Mil) SSOP 48-Lead (240-Mil) TSSOP 48-Lead (300-Mil) SSOP Industrial Operating Range Industrial
Ordering Information CY74FCT163H244
Speed (ns) 4.1 Ordering Code 74FCT163H244CPACT CY74FCT163H244CPVC 74FCT163H244CPVCT Package Name Z48 O48 O48 Package Type 48-Lead (240-Mil) TSSOP 48-Lead (300-Mil) SSOP 48-Lead (300-Mil) SSOP Operating Range Industrial
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