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PI74LCX16373
Fast CMOS 3.3V 16-Bit Transparent Latch
Product Features
* Functionally compatible with FCT3, LVT, and 74 series 16373 families of products * 3-State outputs * 5V Tolerant inputs and outputs * 2.0V-3.6V VCC supply operation * Balanced sink and source output drives (24mA) * Low ground bounce outputs * Power down High Impedance inputs and outputs * Supports live insertion * ESD Protection exceeds 2000V, Human Body Model 200V, Machine Model * Packages (Pb-free available): - 48-pin 240-mil wide plastic TSSOP (A) - 48-pin 300-mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor's PI74LCX series of logic circuits are produced using the Company's advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74LCX16373 is a 16-bit transparent latch designed with 3-state outputs and are intended for bus oriented applications. The Output Enable and Latch Enable controls are organized to operate as two 8-bit latches or one 16-bit latch. When Latch Enable (LE) is HIGH, the flip-flops appear transparent to the data. The data that meets the set-up time when LE is LOW is latched. When OE is HIGH, the bus output is in the high impedance state. The PI74LCX16373 can be driven from either 3.3V or 5.0V devices allowing this device to be used as a translator in a mixed 3.3/5.0V system.
Logic Block Diagram
1OE
2OE
1LE
2LE
1D0
D Q C
1O0
2D0
D Q C
2O0
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2089C
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PI74LCX16373 3.3V 16-Bit Transparent Latch
Product Pin Description
Pin Name xOE
XLE XDX XOX
Truth Table(1)
Inputs ( 1 ) xOE L L H L xLE H H X L xDx H L X X Outputs ( 1 ) xOx H L Z O0
De s cription 3- State Output Enable Inputs (Active LOW) Latch Enable Inputs (Active HIGH) Data Inputs 3- State Outputs Ground Power
GND VCC
Product Pin Configuration
Note: 1. H = X= L= Z= O0 =
48 47 46 45 44 43 42 41
1LE 1D0 1D1
1OE 1O0 1O1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
High Voltage Level Don't Care Low Voltage Level High Impedance Previous O0 before HIGH-to-LOW transition of Latch Enable
GND
1O2 1O3
GND
1D2 1D3
VCC
1O4 1O5
VCC
1D4 1D5
GND
1O6 1O7 2O0 2O1
40 39 48-Pin 38 A, V 37 36 35 34 33 32 31 30 29 28 27 26 25
GND
1D6 1D7 2D0 2D1
GND
2O2 2O3
GND
2D2 2D3
VCC
2O4 2O5
VCC
2D4 2D5
GND
2O6 2O7 2OE
GND
2D6 2D7 2LE
2
PS2089C
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .......................................................... -65C to +150C Ambient Temperature with Power Applied ..........................-40C to +85C Supply Voltage to Ground Potential (Inputs & Vcc Only) .... -0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) . -0.5V to +7.0V DC Input Voltage ................................................................... -0.5V to +7.0V DC Output Current ............................................................................ 120mA Power Dissipation ................................................................................. 1.0W Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
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PI74LCX16373 3.3V 16-Bit Transparent Latch
Recommended Operating Conditions
Symbol VCC VI VO IOH/IOL TA Parame te r Supply Voltage Input Voltage Output Voltage Output Current Free- Air Operating Temperature Input Edge Rate V = 0.8V- 2.0V, VCC = 3.0V HIGH or LOW State 3- State VCC = 3.0V- 3.6V VCC = 2.7V Operating Data Retention M in. 2.0 1.5 0 0 0 -- -- -40 0 M a x. 3.6 3.6 5.5 VCC 5.5 24 12 +85 10 mA C ns/V V Units
t/V
3
PS2089C
06/27/03
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PI74LCX16373 3.3V 16-Bit Transparent Latch
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 2.7V to 3.6V)
Parame te rs VIH VIL VOH De s cription Input HIGH Voltage Input LOW Voltage Output HIGH Voltage Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VC C = 2.7- 3.6 VC C = 2.7 VC C = 3.0 IO H = -0.1mA IO H = -12 mA IO H = -16 mA IO H = -24 mA VO L Output LOW Voltage VC C = 2.7- 3.6 VC C = 2.7 VC C = 3.0 IO L = 0.1mA IO L = 12mA IO L = 16mA IOL = 24mA VIK II IO Z IO F F IC C Clamp Diode Voltage Input Leakage Current Tri- State Output Leakage Power Down Disable Quiescent Power Supply Current Quiescent Power Supply Current TTL Inputs HIGH VC C = Min., IIN = -18mA 0 VI 5.5V 0 VO 5.5V VI = VIH or VIL VC C = 2.7- 3.6 VC C = 2.7- 3.6 M in. 2.0 -- VC C - 0.2 2.2 2.4 2.2 -- -- -- -- -- -- -- -- -- -- Typ(2) -- -- -- -- -- -- -- -- -- -- -0 . 7 -- -- -- 0.1 -- M ax. -- 0.8 -- -- -- -- 0.2 0.4 0.4 0.55 -1.2 5 5 10 10 500 A V Units
VC C = 0V, VIN or VO UT 5.5V VC C = Max. VC C = Max. VIN = GND or VC C VIN = VC C - 0.6V(3)
IC C
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 3.3V, +25C ambient. 3. Per TTL driven input; all other inputs at VCC or GND.
Capacitance
Parame te rs CIN COUT C PD De s cription Input Capacitance Output Capacitance Power Dissipation Capacitance Te s t Conditions VCC = Open, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC, F = 10 MHz Typ. 7 8 20 pF Units
4
PS2089C
06/27/03
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PI74LCX16373 3.3V 16-Bit Transparent Latch
Switching Characteristics over Operating Range
VCC = 3.3V 0.3V Parame te rs tPHL tPLH tPHL tPLH tPZL tPZH tPLZ tPHZ tS tH tW tSK(O) De s cription Propagation Delay Dn to On Propagation Delay LE to On Output Enable time Output Disable Time Setup time, Dn to LE Hold time, Dn to LE LE Pulse Width Output Skew(1) C L = 50pF RL = 500 Conditions M in. 1.5 1.5 1.5 1.5 2.5 1.5 3.0 M a x. 5.4 5.5 6.1 6.0 1.0 VCC =2.7V M in. 1.5 1.5 1.5 1.5 2.5 1.5 3.0 M a x. 5.9 6.4 6.5 6.3 ns Units
Note: 1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics (TA = +25C)
Parame te rs VOLP VOLV De s cription Dynamic LOW Peak Voltage Dynamic LOW Valley Voltage Te s t Conditions (1) VCC = 3.3V, CL = 50pF VIH = 3.3V, VIL = 0V Typ. 0.8 0.8 Units V
Note: 1. Measured with n-1 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
5
PS2089C
06/27/03
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PI74LCX16373 3.3V 16-Bit Transparent Latch
Packaging Mechanical: 48-Pin TSSOP (A) Package
48
.236 .244
6.0 6.2
1
.488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1
X.XX X.XX
DENOTES DIMENSIONS IN MILLIMETERS
.0197 BSC 0.50
.007 .010 0.17 0.27
.002 .006 0.05 0.15
Packaging Mechanical: 48-Pin SSOP (V) Package
48
.291 .299 7.39 7.59
.395 .420 10.03 10.67
Gauge Plane .010 0.25 1 .620 .630 15.75 16.00 .02 0.51 .04 1.01
.008 0.20 Nom.
.015 0.381 x 45 .025 0.635
.110 2.79 Max .025 BSC 0.635 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .008 0.20 .0135 0.34
0-8
.008 0.20 .016 0.40
Ordering Information
Orde ring Code PI74LCX16373A PI74LCX16373V De s cription 48- Pin 240- mil wide Plastic TSSOP (A) 48- Pin 300- mil wide Plastic SSOP (V)
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
6
PS2089C 06/27/03

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