Revised June 2002 74LCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold General Description Features The LCXH16244 contains sixteen non-inverting buffers with 3-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/receiver. The device is nibble controlled. Each nibble has separate 3-STATE control inputs which can be shorted together for full 16-bit operation. ■ 5V tolerant control inputs and outputs The LCXH16244 data inputs include active bushold circuitry, eliminating the need for external pull-up resistors to hold unused or floating data inputs at a valid logic level. ■ Power down high impedance inputs and outputs The LCXH16244 is designed for low voltage (2.5V or 3.3V) VCC applications with capability of interfacing to a 5V signal environment. The LCXH16244 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. ■ 2.3V–3.6V VCC specifications provided ■ 4.5 ns tPD max (VCC = 3.0V), 20 µA ICC max ■ Bushold on inputs eliminates the need for external pull-up/pull-down resistors ■ ±24 mA output drive (VCC = 3.0V) ■ Implements patented noise/EMI reduction circuitry ■ Latch-up performance exceeds 500 mA ■ ESD performance: Human body model > 2000V Machine model > 200V ■ Also packaged in plastic Fine-Pitch Ball Grid Array (FBGA) Ordering Code: Order Number Package Number Package Description 74LCXH16244G (Note 1)(Note 2) BGA54A 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide 74LCXH16244MEA (Note 2) MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide 74LCXH16244MTD (Note 2) MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Note 1: Ordering code “G” indicates Trays. Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol © 2002 Fairchild Semiconductor Corporation DS500248 www.fairchildsemi.com 74LCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold September 2000 74LCXH16244 Connection Diagrams Pin Descriptions Pin Assignment for SSOP and TSSOP Pin Names Description OEn Output Enable Input (Active LOW) I0–I15 Inputs O0–O15 Outputs NC No Connect FBGA Pin Assignments 1 2 3 4 5 6 A O0 NC OE1 OE2 NC I0 B O2 O1 NC NC I1 I2 C O4 O3 VCC VCC I3 I4 D O6 O5 GND GND I5 I6 E O8 O7 GND GND I7 I8 F O10 O9 GND GND I9 I10 I12 G O12 O11 VCC VCC I11 H O14 O13 NC NC I13 I14 J O15 NC OE4 OE3 NC I15 Truth Tables Inputs OE1 Pin Assignment for FBGA Outputs I0–I3 L L L L H H H X Z Inputs OE2 Outputs I4–I7 L L L H H H X Z Outputs OE3 I8–I11 L L L L H H H X Z I12–I15 O12–O15 Inputs OE4 2 O8–O11 Outputs L L L L H H H X H = HIGH Voltage Level L = LOW Voltage Level www.fairchildsemi.com O4–O7 L Inputs (Top Thru View) O0–O3 Z X = Immaterial Z = High Impedance 3-STATE outputs are controlled by an Output Enable (OEn) input for each nibble. When OEn is LOW, the outputs are in 2-state mode. When OEn is HIGH, the outputs are in the high impedance mode, but this does not interfere with entering new data into the inputs. The LCXH16244 contains sixteen non-inverting buffers with 3-STATE standard outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but independent of the other. The control pins can be shorted together to obtain full 16-bit operation. The Logic Diagram 3 www.fairchildsemi.com 74LCXH16244 Functional Description 74LCXH16244 Absolute Maximum Ratings(Note 3) Symbol Parameter VCC Supply Voltage VI DC Input Voltage Value Units V −0.5 to +7.0 OE I0 - I15 VO Conditions −0.5 to +7.0 V −0.5 to VCC + 0.5 −0.5 to +7.0 DC Output Voltage Output in 3-STATE −0.5 to VCC + 0.5 Output in HIGH or LOW State (Note 4) IIK DC Input Diode Current −50 VI < GND IOK DC Output Diode Current −50 VO < GND +50 VO > VCC V mA mA IO DC Output Source/Sink Current ±50 mA ICC DC Supply Current per Supply Pin ±100 mA IGND DC Ground Current per Ground Pin ±100 mA TSTG Storage Temperature −65 to +150 °C Recommended Operating Conditions (Note 5) Symbol VCC Parameter Supply Voltage VI Input Voltage VO Output Voltage IOH/IOL Output Current TA Free-Air Operating Temperature ∆t/∆V Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V Min Max Operating 2.0 3.6 Data Retention 1.5 3.6 0 VCC HIGH or LOW State 0 VCC 3-STATE 0 5.5 VCC = 3.0V − 3.6V ±24 VCC = 2.7V − 3.0V ±12 VCC = 2.3V − 2.7V ±8 Units V V V mA −40 85 °C 0 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 control inputs must be held HIGH or LOW. DC Electrical Characteristics Symbol VIH Parameter Conditions HIGH Level Input Voltage VIL LOW Level Input Voltage VOH HIGH Level Output Voltage VCC TA = −40°C to +85°C (V) Min 2.3 − 2.7 1.7 2.7 − 3.6 2.0 2.3 − 2.7 VOL LOW Level Output Voltage Input Leakage Current www.fairchildsemi.com 0.8 IOH = −8 mA 2.3 1.8 2.7 2.2 IOH = −18 mA 3.0 2.4 IOH = −24 mA 3.0 2.2 IOL = 100 µA 2.3 − 3.6 0.2 IOL = 8 mA 2.3 0.6 IOL = 12 mA 2.7 0.4 IOL = 16 mA 3.0 0.4 V 3.0 0.55 Data VI = VCC or GND 2.3 − 3.6 ±5.0 Control 0 ≤ VI ≤ 5.5 2.3 − 3.6 ±5.0 4 V VCC − 0.2 IOH = −12 mA IOL = 24 mA II 2.3 − 3.6 Units V 0.7 2.7 − 3.6 IOH = −100 µA Max V µA Symbol (Continued) Parameter VCC Conditions TA = −40°C to +85°C (V) II(HOLD) Bushold Input Minimum VIN = 0.7V Drive Hold Current VIN = 1.7V 2.3 VIN = 0.8V 3.0 VIN = 2.0V II(OD) Bushold Input Over-Drive (Note 6) Current to Change State (Note 7) 2.7 (Note 6) 3.6 (Note 7) 0 ≤ VO ≤ 5.5V IOZ 3-STATE Output Leakage IOFF Power-Off Leakage Current VO = 5.5V ICC Quiescent Supply Current ∆ICC Increase in ICC per Input Min Units Max 45 −45 µA 75 −75 300 −300 µA 450 −450 2.3 − 3.6 ±5.0 µA 0 10 µA VI = VCC or GND 2.3 − 3.6 20 µA VIH = VCC −0.6V 2.3 − 3.6 500 µA VI = VIH or VIL Note 6: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 7: An external driver must sink at least the specified current to switch from HIGH-to-LOW. AC Electrical Characteristics TA = −40°C to +85°C, RL = 500 Ω Symbol Parameter VCC = 3.3V ± 0.3V VCC = 2.7V VCC = 2.5V ± 0.2V CL = 50 pF CL = 50 pF CL = 30 pF Min Max Min Max Min tPHL Propagation Delay 1.0 4.5 1.0 5.2 1.0 5.4 tPLH Data to Output 1.0 4.5 1.0 5.2 1.0 5.4 tPZL Output Enable Time 1.0 5.5 1.0 6.3 1.0 7.2 1.0 5.5 1.0 6.3 1.0 7.2 Output Disable Time 1.0 5.4 1.0 5.7 1.0 6.5 5.4 1.0 5.7 1.0 6.5 tPZH tPLZ tPHZ tOSHL 1.0 Output to Output Skew (Note 8) Max 1.0 ns ns ns ns 1.0 tOSLH Units Note 8: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design. Dynamic Switching Characteristics Symbol VOLP VOLV VCC TA = 25°C (V) Typical CL = 50 pF, VIH = 3.3V, VIL = 0V 3.3 0.8 CL = 30 pF, VIH = 2.5V, VIL = 0V 2.5 0.6 CL = 50 pF, VIH = 3.3V, VIL = 0V 3.3 −0.8 CL = 30 pF, VIH = 2.5V, VIL = 0V 2.5 −0.6 Parameter Quiet Output Dynamic Peak VOL Quiet Output Dynamic Valley VOL Conditions Units V V Capacitance Typical Units CIN Symbol Input Capacitance Parameter VCC = Open, VI = 0V or VCC Conditions 7 pF COUT Output Capacitance VCC = 3.3V, VI = 0V or VCC 8 pF CPD Power Dissipation Capacitance VCC = 3.3V, VI = 0V or VCC, f = 10 MHz 20 pF 5 www.fairchildsemi.com 74LCXH16244 DC Electrical Characteristics 74LCXH16244 AC LOADING and WAVEFORMS Generic for LCX Family FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance) CL VI 6V for VCC = 3.3V, 2.7V 50 pF VCC * 2 for VCC = 2.5V 30 pF Waveform for Inverting and Non-Inverting Functions 3-STATE Output High Enable and Disable Times for Logic Propagation Delay. Pulse Width and trec Waveforms Setup Time, Hold Time and Recovery Time for Logic trise and tfall 3-STATE Output Low Enable and Disable Times for Logic FIGURE 2. Waveforms (Input Characteristics; f =1MHz, tr = tf = 3ns) Symbol www.fairchildsemi.com VCC 3.3V ± 0.3V 2.7V 2.5V ± 0.2V Vmi 1.5V 1.5V VCC/2 Vmo 1.5V 1.5V VCC/2 Vx VOL + 0.3V VOL + 0.3V VOL + 0.15V Vy VOH − 0.3V VOH − 0.3V VOH − 0.15V 6 74LCXH16244 Schematic Diagram Generic for LCXH Family 7 www.fairchildsemi.com 74LCXH16244 Physical Dimensions inches (millimeters) unless otherwise noted 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Package Number BGA54A www.fairchildsemi.com 8 74LCXH16244 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide Package Number MS48A 9 www.fairchildsemi.com 74LCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD48 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: 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. 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 www.fairchildsemi.com 10