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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Low-Voltage CMOS 16-Bit Buffer
With 5V-Tolerant Inputs and Outputs (3-State, Non-Inverting)
The MC74LCX16244 is a high performance, non-inverting 16-bit buffer operating from a 2.7 to 3.6V supply. The device is nibble controlled. Each nibble has separate Output Enable inputs which can be tied together for full 16-bit operation. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A VI specification of 5.5V allows MC74LCX16244 inputs to be safely driven from 5V devices. The MC74LCX16244 is suitable for memory address driving and all TTL level bus oriented transceiver applications. 4.5ns maximum propagation delays support high performance applications. Current drive capability is 24mA at the outputs. The Output Enable (OEn) inputs, when HIGH, disable the outputs by placing them in a HIGH Z condition.
MC74LCX16244
LOW-VOLTAGE CMOS 16-BIT BUFFER
* * * * * * * * *
Designed for 2.7 to 3.6V VCC Operation 4.5ns Maximum tpd 5V Tolerant -- Interface Capability With 5V TTL Logic Supports Live Insertion and Withdrawal IOFF Specification Guarantees High Impedance When VCC = 0V LVTTL Compatible LVCMOS Compatible 24mA Balanced Output Sink and Source Capability
DT SUFFIX PLASTIC TSSOP PACKAGE CASE 1201-01
Near Zero Static Supply Current in All Three Logic States (20A) Substantially Reduces System Power Requirements * Latchup Performance Exceeds 500mA
* ESD Performance: Human Body Model >2000V;
Machine Model >200V The MC74LCX16244 contains sixteen non-inverting buffers with 3-state 5V-tolerant outputs. The device is nibble controlled with each nibble functioning identically, but independently. The control pins may be tied together to obtain full 16-bit operation. The 3-state outputs are controlled by an Output Enable (OEn) input for each nibble. When OEn is LOW, the outputs are on. When OEn is HIGH, the outputs are in the high impedance state.
PIN NAMES
Pins OEn D0-D15 O0-O15 Function Output Enable Inputs Inputs Outputs
10/96
(c) Motorola, Inc. 1996
1
REV 1
MC74LCX16244
OE1 1 O0 2 O1 3 GND 4 O2 5 O3 6 VCC 7 O4 8 O5 9 GND 10 O6 11 O7 12 O8 13 O9 14 GND 15 O10 16 O11 17 VCC 18 O12 19 O13 20 GND 21 O14 22 O15 23 OE4 24
48 OE2 47 D0 46 D1 45 GND 44 D2 43 D3 42 VCC 41 D4 40 D5 39 GND 38 D6 37 D7 36 D8 35 D9 34 GND 33 D10 32 D11 31 VCC 30 D12 29 D13 28 GND 27 D14 26 D15 25 OE3 D4:7 D0:3 OE2 48 OE1 1
LOGIC DIAGRAM
OE3 OE4
25 24
O0:3
D8:11
O8:11
O4:7
D12:15
O12:15 One of Four
OE1 L L H
D0:3 L H X
O0:3 L H Z
OE2 L L H
D4:7 L H X
O4:7 L H Z
OE3 L L H
D8:11 L H X
O8:11 L H Z
OE4 L L H
D12:15 L H X
O12:15 L H Z
H = High Voltage Level; L = Low Voltage Level; Z = High Impedance State; X = High or Low Voltage Level and Transitions Are Acceptable, for ICC reasons, DO NOT FLOAT Inputs
MOTOROLA
2
LCX DATA BR1339 -- REV 2
MC74LCX16244
ABSOLUTE MAXIMUM RATINGS*
Symbol VCC VI VO Parameter DC Supply Voltage DC Input Voltage DC Output Voltage Value -0.5 to +7.0 -0.5 VI +7.0 -0.5 VO +7.0 -0.5 VO VCC + 0.5 IIK IOK DC Input Diode Current DC Output Diode Current -50 -50 +50 IO ICC IGND TSTG DC Output Source/Sink Current DC Supply Current Per Supply Pin DC Ground Current Per Ground Pin Storage Temperature Range 50 100 100 -65 to +150 Output in 3-State Note 1. VI < GND VO < GND VO > VCC Condition Unit V V V V mA mA mA mA mA mA C
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute-maximum-rated conditions is not implied. 1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VI VO IOH IOL IOH IOL TA t/V Supply Voltage Input Voltage Output Voltage (HIGH or LOW State) (3-State) Parameter Operating Data Retention Only Min 2.0 1.5 0 0 0 Typ 3.3 3.3 Max 3.6 3.6 5.5 VCC 5.5 -24 24 -12 12 -40 0 +85 10 Unit V V V mA mA mA mA C ns/V
HIGH Level Output Current, VCC = 3.0V - 3.6V LOW Level Output Current, VCC = 3.0V - 3.6V HIGH Level Output Current, VCC = 2.7V - 3.0V LOW Level Output Current, VCC = 2.7V - 3.0V Operating Free-Air Temperature Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V, VCC = 3.0V
DC ELECTRICAL CHARACTERISTICS
TA = -40C to +85C Symbol VIH VIL VOH Characteristic HIGH Level Input Voltage (Note 2.) LOW Level Input Voltage (Note 2.) HIGH Level Output Voltage Condition 2.7V VCC 3.6V 2.7V VCC 3.6V 2.7V VCC 3.6V; IOH = -100A VCC = 2.7V; IOH = -12mA VCC = 3.0V; IOH = -18mA VCC = 3.0V; IOH = -24mA VOL LOW Level Output Voltage 2.7V VCC 3.6V; IOL = 100A VCC = 2.7V; IOL= 12mA VCC = 3.0V; IOL = 16mA VCC = 3.0V; IOL = 24mA 2. These values of VI are used to test DC electrical characteristics only. VCC - 0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 V Min 2.0 0.8 Max Unit V V V
LCX DATA BR1339 -- REV 2
3
MOTOROLA
MC74LCX16244
DC ELECTRICAL CHARACTERISTICS (continued)
TA = -40C to +85C Symbol II IOZ IOFF ICC ICC Characteristic Input Leakage Current 3-State Output Current Power-Off Leakage Current Quiescent Supply Current Condition 2.7V VCC 3.6V; 0V VI 5.5V 2.7 VCC 3.6V; 0V VO 5.5V; VI = VIH or V IL VCC = 0V; VI or VO = 5.5V 2.7 VCC 3.6V; VI = GND or VCC 2.7 VCC 3.6V; 3.6 VI or VO 5.5V Increase in ICC per Input 2.7 VCC 3.6V; VIH = VCC - 0.6V Min Max 5.0 5.0 10 20 20 500 Unit A A A A A A
AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500)
Limits TA = -40C to +85C VCC = 3.0V to 3.6V Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tOSHL tOSLH Propagation Delay Input to Output Output Enable Time to High and Low Level Output Disable Time From High and Low Level Output-to-Output Skew (Note 3.) Parameter Waveform 1 2 2 Min 1.5 1.5 1.5 1.5 1.5 1.5 Max 4.5 4.5 5.5 5.5 5.4 5.4 1.0 1.0 VCC = 2.7V Max 5.2 5.2 6.3 6.3 5.7 5.7 Unit ns ns ns ns
3. 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
TA = +25C Symbol VOLP Characteristic Dynamic LOW Peak Voltage (Note 4.) Condition VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V Min Typ 0.8 Max Unit V
VOLV Dynamic LOW Valley Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V 4. Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH-to-LOW or LOW-to-HIGH. The remaining output is measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol CIN COUT CPD Parameter Input Capacitance Output Capacitance Power Dissipation Capacitance Condition VCC = 3.3V, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC 10MHz, VCC = 3.3V, VI = 0V or VCC Typical 7 8 20 Unit pF pF pF
MOTOROLA
4
LCX DATA BR1339 -- REV 2
MC74LCX16244
2.7V Dn 1.5V 1.5V 0V tPLH On 1.5V tPHL VOH 1.5V VOL WAVEFORM 1 - PROPAGATION DELAYS tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns 2.7V OEn 1.5V 0V tPZH On 1.5V 0V tPZL 1.5V VOL + 0.3V GND WAVEFORM 2 - OUTPUT ENABLE AND DISABLE TIMES tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns tPLZ 3.0V tPHZ VCC VOH - 0.3V
On
Figure 1. AC Waveforms
VCC 6V OPEN GND
PULSE GENERATOR RT
DUT CL
R1 RL
TEST tPLH, tPHL tPZL, tPLZ Open Collector/Drain tPLH and tPHL tPZH, tPHZ
SWITCH Open 6V 6V GND
CL = 50pF or equivalent (Includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50)
Figure 2. Test Circuit
LCX DATA BR1339 -- REV 2
5
MOTOROLA
MC74LCX16244
OUTLINE DIMENSIONS
DT SUFFIX PLASTIC TSSOP PACKAGE CASE 1201-01 ISSUE A
48X
K REF 0.12 (0.005)
M
TU
S
V
S
K K1 J J1
48
25
M
SECTION N-N L B -U- N
1 24
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 5. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 6. DIMENSIONS A AND B ARE TO BE DETERMINED AT DATUM PLANE -W-. DIM A B C D F G H J J1 K K1 L M MILLIMETERS MIN MAX 12.40 12.60 6.00 6.20 --- 1.10 0.05 0.15 0.50 0.75 0.50 BSC 0.37 --- 0.09 0.20 0.09 0.16 0.17 0.27 0.17 0.23 7.95 8.25 0_ 8_ INCHES MIN MAX 0.488 0.496 0.236 0.244 --- 0.043 0.002 0.006 0.020 0.030 0.0197 BSC 0.015 --- 0.004 0.008 0.004 0.006 0.007 0.011 0.007 0.009 0.313 0.325 0_ 8_
0.254 (0.010)
PIN 1 IDENT.
A -V-
N F DETAIL E M 0.25 (0.010)
D 0.076 (0.003) -T- SEATING
PLANE
C DETAIL E G H
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MOTOROLA 6
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MC74LCX16244/D LCX DATA BR1339 -- REV 2

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