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74VCX32244 Low Voltage 32-Bit Buffer/Line Driver with 3.6V Tolerant Inputs and Outputs
September 2000 Revised August 2001
74VCX32244 Low Voltage 32-Bit Buffer/Line Driver with 3.6V Tolerant Inputs and Outputs
General Description
The VCX32244 contains thirty-two non-inverting buffers with 3-STATE outputs to be employed as a memory and address driver, clock driver, or bus oriented transmitter/ receiver. The device is nibble (4-bit) controlled. Each nibble has separate 3-STATE control inputs which can be shorted together for 8-bit, 16-bit or full 32-bit operation. The 74VCX32244 is designed for low voltage (1.65V to 3.6V) VCC applications with I/O capability up to 3.6V. The 74VCX32244 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation.
Features
I 1.65V-3.6V VCC supply operation I 3.6V tolerant inputs and outputs I tPD 2.5 ns max for 3.0V to 3.6V VCC 3.0 ns max for 2.3V to 2.7V VCC 6.0 ns max for 1.65V to 1.95V VCC I Power-off high impedance inputs and outputs I Supports live insertion and withdrawal (Note 1) I Static Drive (IOH/IOL)
24 mA @ 3.0V VCC 18 mA @ 2.3V VCC 6 mA @ 1.8V VCC
I Uses patented noise/EMI reduction circuitry I Latch-up performance exceeds 300 mA I ESD performance: Human body model > 2000V Machine model > 200V I Packages in plastic Fine-Pitch Ball Grid Array (FBGA)
Note 1: To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number 74VCX32244GX (Note 2) Package Number BGA96A Package Description 96-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide [Tape and Reel]
Note 2: BGA package available in Tape and Reel only.
Logic Symbol
(c) 2001 Fairchild Semiconductor Corporation
DS500416
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74VCX32244
Connection Diagram
Truth Tables
Inputs OE1 L L H Inputs OE2 L L H Inputs OE3 L L H I8-I11 L H X Inputs OE4 L I12-I15 L H X Inputs OE5 L L 5 I0 I2 I4 I6 I8 I10 I12 I15 I16 I18 I20 I22 I24 I26 I28 I31 6 I1 I3 I5 I7 I9 I11 I13 I14 I17 I19 I21 I23 I25 I27 I29 I30 OE8 L L H OE7 L L H Inputs I28-I31 L H X OE6 L L H Inputs I24-I27 L H X H Inputs I20-I23 L H X I16-I19 L H X I4-I7 L H X I0-I3 L H X Outputs O0-O3 L H Z Outputs O4-O7 L H Z Outputs O8-O11 L H Z Outputs O12-O15 L H Z Outputs O16-O19 L H Z Outputs O20-O23 L H Z Outputs O24-O27 L H Z Outputs O28-O31 L H Z
(Top Thru View)
Pin Descriptions
Pin Names OEn I0-I31 O0-O31 Description Output Enable Input (Active LOW) Inputs Outputs
L H
FBGA Pin Assignments
1 A B C D E F G H J K L M N P R T O1 O3 O5 O7 O9 O11 O13 O14 O17 O19 O21 O23 O25 O27 O29 O30 2 O0 O2 O4 O6 O8 O10 O12 O15 O16 018 O20 O22 O24 O26 O28 O31 3 OE1 GND VCC GND GND VCC GND OE4 OE5 GND VCC GND GND VCC GND OE8 4 OE2 GND VCC GND GND VCC GND OE3 OE6 GND VCC GND GND VCC GND OE7
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial (HIGH or LOW, inputs may not float) Z = High Impedance
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74VCX32244
Functional Description
The 74VCX32244 contains thirty-two non-inverting buffers with 3-STATE outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but independent of each other. The control pins may be shorted together to obtain full 32-bit operation.The 3-STATE outputs are controlled by an Output Enable (OEn) input. When OEn is LOW, the outputs are in the 2-state mode. When OEn is HIGH, the standard outputs are in the high impedance mode but this does not interfere with entering new data into the inputs.
Logic Diagrams
Byte 1 Byte 2
Byte 3
Byte 4
Note: Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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74VCX32244
Absolute Maximum Ratings(Note 3)
Supply Voltage (VCC ) DC Input Voltage (VI) Output Voltage (VO) Outputs 3-STATED Outputs Active (Note 4) DC Input Diode Current (IIK) VI < 0V DC Output Diode Current (IOK) VO < 0V VO > VCC DC Output Source/Sink Current (IOH/IOL) DC VCC or GND Current per Supply Pin (ICC or GND) Storage Temperature Range (TSTG)
-0.5V to +4.6V -0.5V to +4.6V -0.5V to +4.6V -0.5V to VCC +0.5V -50 mA -50 mA +50 mA 50 mA 100 mA -65C to +150C
Recommended Operating Conditions (Note 5)
Power Supply Operating Data Retention Only Input Voltage Output Voltage (VO) Output in Active States Output in 3-State Output Current in IOH/IOL VCC = 3.0V to 3.6V VCC = 2.3V to 2.7V VCC = 1.65V to 2.3V Free Air Operating Temperature (TA) Minimum Input Edge Rate (t/V) VIN = 0.8V to 2.0V, VCC = 3.0V 10 ns/V
Note 3: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 4: IO Absolute Maximum Rating must be observed. Note 5: Floating or unused inputs must be held HIGH or LOW.
1.65V to 3.6V 1.2V to 3.6V
-0.3V to +3.6V
0V to VCC 0.0V to 3.6V
24 mA 18 mA 6 mA -40C to +85C
DC Electrical Characteristics (2.7V < VCC 3.6V)
Symbol VIH VIL VOH Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage IOH = -100 A IOH = -12 mA IOH = -18 mA IOH = -24 mA VOL LOW Level Output Voltage IOL = 100 A IOL = 12 mA IOL = 18 mA IOL = 24 mA II IOZ IOFF ICC ICC Input Leakage Current 3-STATE Output Leakage Power-OFF Leakage Current Quiescent Supply Current Increase in ICC per Input 0 VI 3.6V 0 VO 3.6V VI = VIH or VIL 0 (VI, VO) 3.6V VI = VCC or GND VCC (VI, VO) 3.6V (Note 6) VIH = VCC -0.6V
Note 6: Outputs disabled or 3-STATE only.
Conditions
VCC (V) 2.7-3.6 2.7-3.6 2.7-3.6 2.7 3.0 3.0 2.7-3.6 2.7 3.0 3.0 2.7-3.6 2.7-3.6 0 2.7-3.6 2.7-3.6 2.7-3.6
Min 2.0
Max
Units V
0.8 VCC - 0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 5.0 10 10 40 40 750
V V V V V V V V V A A A A A A
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74VCX32244
DC Electrical Characteristics
Symbol VIH VIL VOH Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage
(2.3V VCC 2.7V)
Conditions VCC (V) 2.3-2.7 2.3-2.7 Min 1.6 0.7 VCC - 0.2 2.0 1.8 1.7 0.2 0.4 0.6 5.0 10 10 40 40 Max Units V V V V V V V V V A A A A A
IOH = -100 A IOH = -6 mA IOH = -12 mA IOH = -18 mA
2.3-2.7 2.3 2.3 2.3 2.3-2.7 2.3 2.3 2.3-2.7 2.3-2.7 0 2.3-2.7 2.3-2.7
VOL
LOW Level Output Voltage
IOL = 100 A IOL = 12 mA IOL = 18 mA
II IOZ IOFF ICC
Input Leakage Current 3-STATE Output Leakage Power-OFF Leakage Current Quiescent Supply Current
0 VI 3.6V 0 VO 3.6V VI = VIH or VIL 0 (VI, V O) 3.6V VI = VCC or GND VCC (VI, VO) 3.6V (Note 7)
Note 7: Outputs disabled or 3-STATE only.
DC Electrical Characteristics
Symbol VIH VIL VOH VOL II IOZ IOFF ICC Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Voltage Input Leakage Current 3-STATE Output Leakage Power-OFF Leakage Current Quiescent Supply Current
(1.65V VCC < 2.3V)
Conditions VCC (V) 1.65-2.3 1.65-2.3 Min 0.65 x VCC 0.35 x VCC VCC - 0.2 1.25 0.2 0.3 5.0 10 10 40 40 Max Units V V V V V V A A A A A
IOH = -100 A IOH = -6 mA IOL = 100 A IOL = 6 mA 0 VI 3.6V 0 VO 3.6V VI = V IH or VIL 0 (VI, VO) 3.6V VI = V CC or GND VCC (VI, VO) 3.6V (Note 8)
1.65-2.3 1.65 1.65-2.3 1.65 1.65-2.3 1.65-2.3 0 1.65-2.3 1.65-2.3
Note 8: Outputs disabled or 3-STATE only.
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74VCX32244
AC Electrical Characteristics
Symbol Parameter
(Note 9)
TA = -40C to +85C, CL = 30 pF, RL = 500 VCC = 3.3V 0.3V Min Max 2.5 3.5 3.5 0.8 0.8 0.8 VCC = 2.5V 0.2V Min 1.0 1.0 1.0 Max 3.0 4.1 3.8 VCC = 1.8V 0.15V Min 1.5 1.5 1.5 Max 6.0 8.2 6.8 ns ns ns Units
tPHL, tPLH tPZL, tPZH tPLZ, tPHZ
Propagation Delay Output Enable Time Output Disable Time
Note 9: For CL = 50PF, add approximately 300 ps to the AC maximum specification.
Dynamic Switching Characteristics
Symbol VOLP Parameter Quiet Output Dynamic Peak VOL Conditions CL = 30 pF, VIH = VCC, VIL = 0V VCC (V) 1.8 2.5 3.3 VOLV Quiet Output Dynamic Valley VOL CL = 30 pF, VIH = VCC, VIL = 0V 1.8 2.5 3.3 VOHV Quiet Output Dynamic Valley VOH CL = 30 pF, VIH = VCC, VIL = 0V 1.8 2.5 3.3 TA = +25C Typical 0.25 0.6 0.8 -0.25 -0.6 -0.8 1.5 1.9 2.2 V V V Units
Capacitance
Symbol CIN COUT CPD Parameter Input Capacitance Output Capacitance Power Dissipation Capacitance Conditions VCC = 1.8, 2.5V or 3.3V, VI = 0V or VCC VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V VI = 0V or VCC, f = 10 MHz, VCC = 1.8V, 2.5V or 3.3V TA = +25C Typical 6 7 20 Units pF pF pF
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74VCX32244
AC Loading and Waveforms
TEST tPLH, tPHL tPZL, tPLZ tPZH, tPHZ
SWITCH Open 6V at VCC = 3.3 0.3V; VCC x 2 at VCC = 2.5 0.2V; 1.8V 0.15V GND FIGURE 1. AC Test Circuit
FIGURE 2. Waveform for Inverting and Non-Inverting Functions
FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic
FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic
Symbol Vmi Vmo VX VY
VCC 3.3V 0.3V 1.5V 1.5V VOL +0.3V VOH -0.3V 2.5V 0.2V VCC/2 VCC/2 VOL +0.15V VOH -0.15V 1.8V 0.15V VCC/2 VCC/2 VOL +0.15V VOH -0.15V
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74VCX32244 Low Voltage 32-Bit Buffer/Line Driver with 3.6V Tolerant Inputs and Outputs
Physical Dimensions inches (millimeters) unless otherwise noted
96-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Package Number BGA96A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 8 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com

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