SEMICONDUCTOR TECHNICAL DATA
1
REV 0
Motorola, Inc. 1997
1/97
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The MC74LCX16543A is a high performance, non–inverting 16–bit
latching transceiver operating from a 2.7 to 3.6V supply. The device is
byte controlled. Each byte has separate control 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 MC74LCX16543A inputs to be safely driven from 5V devices.
The MC74LCX16543A is suitable for memory address driving and all TTL
level bus oriented transceiver applications.
For data flow from A to B with the EAB
LOW, the A–to–B Output
Enable (OEAB
) must be LOW in order to enable data to the B bus, as
indicated in the Function Table. With EAB
LOW, a LOW signal on the
A–to–B Latch Enable (LEAB
) input makes the A–to–B latches
transparent; a subsequent LOW–to–HIGH transition of the LEAB
signal
will latch the A latches, and the outputs no longer change with the A
inputs. With EAB
and OEAB both LOW, the 3–State B output buffers are
active and reflect the data present at the output of the A latches. Control
of data flow from B to A is symmetric to that above, but uses the EBA
,
LEBA
, and OEBA inputs.
• Designed for 2.7 to 3.6V V
CC
Operation
• 5.2ns Maximum t
pd
• 5V T olerant — Interface Capability With 5V TTL Logic
• Supports Live Insertion and Withdrawal
• I
OFF
Specification Guarantees High Impedance When VCC = 0V
• LVTTL Compatible
• LVCMOS Compatible
• 24mA Balanced Output Sink and Source Capability
• Near Zero Static Supply Current in All Three Logic States (20µA)
Substantially Reduces System Power Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
DT SUFFIX
56–LEAD PLASTIC TSSOP PACKAGE
CASE 1202–01
LOW–VOLTAGE CMOS
16–BIT LATCHING
TRANSCEIVER
PIN NAMES
Function
Output Enable Inputs
Enable Inputs
Latch Enable Inputs
3–State Inputs/Outputs
3–State Inputs/Outputs
Pins
OExxn
Exxn
LExxn
A0–A15
B0–B15
MC74LCX16543A
MOTOROLA LCX DATA
BR1339 — REV 3
2
Pinout: 56-Lead TSSOP
(Top View)
561
OEBA1
OEAB1
552
LEBA1
LEAB1
543
EBA1
EAB1
534
GNDGND
525
B0
A0
516
B1A1
507
V
CC
V
CC
498
B2A2
489
B3A3
4710
B4A4
4611
GNDGND
4512
B5
A5
4413
B6A6
4314
B7A7
4215
B8A8
4116
B9A9
4017
B10A10
3918
GNDGND
3819
B11
A11
3720
B12A12
3621
B13A13
3522
V
CC
V
CC
3423
B14A14
3324
B15A15
3225
GNDGND
3126
EBA2
EAB2
3027
LEBA2
LEAB2
2928
OEBA2
OEAB2
LOGIC DIAGRAM
LEBA1
D
EBA1
OEBA1
A0
LE
Q
D
LE
Q
DETAIL A x 7
DETAIL A
B0
55
54
56 1
3
2
OEAB1
EAB1
LEAB1
5
52
LEBA2
D
EBA2
OEBA2
A8
LE
Q
D
LE
Q
DETAIL Bx 7
DETAIL B
B8
30
31
29 28
26
27
OEAB2
EAB2
LEAB2
15
42
MC74LCX16543A
LCX DATA
BR1339 — REV 3
3 MOTOROLA
FUNCTION TABLE
Inputs
Data Ports
OEABn OEBAn EABn EBAn LEABn LEBAn An Bn
O
perating Mode
H H Input Input
X X X X X X Disable Outputs
L L L L X X Transparent Data; Outputs Disabled
H H l
h
l
h
Latch and Outputs Disabled
L H Input Output
H X* L X l
h
Z
Z
Load and B Outputs Disabled
H X X Z Hold; B Outputs Disabled
L X* L X L
H
L
H
Transparent A to B
H X l
h
L
H
Latch and Display B Outputs
H L Output Input
X* H X L Z
Z
l
h
Load and A Outputs Disabled
X H Z X Hold; A Outputs DIsabled
X* L X L L
H
L
H
Transparent B to A
X H L
H
l
h
Latch and Display A Outputs
H = High Voltage Level; h = High Voltage Level One Setup T ime Prior to the Latch Enable or Enable Low–to–High Transition; L = Low Voltage Level;
l = Low Voltage Level One Setup Time Prior to the Latch Enable or Enable Low–to–High T ransition; X = Don’t Care; * = The latches are not internally
gated with the Output Enables. Therefore, data at the A or B ports may enter the latches at any time, provided that the LExx
and Exx pins are set
accordingly. For ICC reasons, Do Not Float Inputs.
ABSOLUTE MAXIMUM RATINGS*
Symbol Parameter Value Condition Unit
V
CC
DC Supply Voltage –0.5 to +7.0 V
V
I
DC Input Voltage –0.5 ≤ VI ≤ +7.0 V
V
O
DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V
–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V
I
IK
DC Input Diode Current –50 VI < GND mA
I
OK
DC Output Diode Current –50 VO < GND mA
+50 VO > V
CC
mA
I
O
DC Output Source/Sink Current ±50 mA
I
CC
DC Supply Current Per Supply Pin ±100 mA
I
GND
DC Ground Current Per Ground Pin ±100 mA
T
STG
Storage Temperature Range –65 to +150 °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.
MC74LCX16543A
MOTOROLA LCX DATA
BR1339 — REV 3
4
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage Operating
Data Retention Only
2.0
1.5
3.3
3.3
3.6
3.6
V
V
I
Input Voltage 0 5.5 V
V
O
Output Voltage (HIGH or LOW State)
(3–State)
0
0
V
CC
5.5
V
I
OH
HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA
I
OL
LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA
I
OH
HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA
I
OL
LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA
T
A
Operating Free–Air Temperature –40 +85 °C
∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,
VCC = 3.0V
0 10 ns/V
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
V
IH
HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V
V
IL
LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V
V
OH
HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC– 0.2 V
VCC = 2.7V; IOH = –12mA 2.2
VCC = 3.0V; IOH = –18mA 2.4
VCC = 3.0V; IOH = –24mA 2.2
V
OL
LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V
VCC = 2.7V; IOL= 12mA 0.4
VCC = 3.0V; IOL = 16mA 0.4
VCC = 3.0V; IOL = 24mA 0.55
I
I
Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA
I
OZ
3–State Output Current 2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;
VI = VIH or V
IL
±5.0 µA
I
OFF
Power–Off Leakage Current VCC = 0V; VI or VO = 5.5V 10 µA
I
CC
Quiescent Supply Current
2.7 ≤ VCC ≤ 3.6V; VI = GND or V
CC
20 µA
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V ±20 µA
∆I
CC
Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V 500 µA
2. These values of VI are used to test DC electrical characteristics only.
MC74LCX16543A
LCX DATA
BR1339 — REV 3
5 MOTOROLA
AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Limits
TA = –40°C to +85°C
VCC = 3.0V to 3.6V VCC = 2.7V
Symbol Parameter Waveform Min Max Min Max Unit
t
PLH
t
PHL
Propagation Delay
An to Bn or Bn to An
1 1.5
1.5
5.4
5.4
1.5
1.5
6.0
6.0
ns
t
PLH
t
PHL
Propagation Delay
LEBAn to An or LEABn to Bn
4 1.5
1.5
7.0
7.0
1.5
1.5
8.2
8.2
ns
t
PZH
t
PZL
Output Enable Time
OEBAn
to An or OEABn to Bn
2 1.5
1.5
6.5
6.5
1.5
1.5
7.0
7.0
ns
t
PHZ
t
PLZ
Output Disable Time
OEBAn
to An or OEABn to Bn
2 1.5
1.5
6.5
6.5
1.5
1.5
7.0
7.0
ns
t
PZH
t
PZL
Output Enable Time
EBAn to An or EABn to Bn
2 1.5
1.5
6.5
6.5
1.5
1.5
7.0
7.0
ns
t
PHZ
t
PLZ
Output Disable Time
EBAn to An or EABn to Bn
2 1.5
1.5
6.5
6.5
1.5
1.5
7.0
7.0
ns
t
s
Setup Time, HIGH to LOW Data to LExxn 4 2.5 2.5 ns
t
h
Hold Time, HIGH to LOW Data to LExxn 4 1.5 1.5 ns
t
s
Setup Time, HIGH to LOW Data to Exxn 4 2.5 2.5 ns
t
h
Hold Time, HIGH to LOW Data to Exxn 4 1.5 1.5 ns
t
w
Latch Enable or Enable Pulse Width, LOW 4 3.0 3.0 ns
t
OSHL
t
OSLH
Output–to–Output Skew
(Note 3.)
1.0
1.0
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 (t
OSHL
) or LOW–to–HIGH (t
OSLH
); parameter
guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol Characteristic Condition Min Typ Max Unit
V
OLP
Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V , CL = 50pF, VIH = 3.3V , VIL = 0V 0.8 V
V
OLV
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 Parameter Condition Typical Unit
C
IN
Input Capacitance VCC = 3.3V , VI = 0V or V
CC
7 pF
C
I/O
Input/Output Capacitance VCC = 3.3V , VI = 0V or V
CC
8 pF
C
PD
Power Dissipation Capacitance 10MHz, VCC = 3.3V , VI = 0V or V
CC
20 pF
MC74LCX16543A
MOTOROLA LCX DATA
BR1339 — REV 3
6
WAVEFORM 1 – A/B to B/A PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
0V
An
or Bn
Bn
or An
1.5V
V
OH
V
OL
t
PLH
, t
PHL
1.5V
WAVEFORM 2 – OExx/Exx to A or B OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
0V
VOH – 0.3V
≈
0V
OExxn
or Exxn
An
or Bn
t
PZH
≈
3.0V
VOL + 0.3V
1.5V1.5V
t
PHZ
t
PZL
t
PLZ
An
or Bn
1.5V
1.5V
Figure 1. AC Waveforms
MC74LCX16543A
LCX DATA
BR1339 — REV 3
7 MOTOROLA
WAVEFORM 4 – Enable to A or B PROPAGATION DELAYS, Enable MINIMUM
PULSE WIDTH, A or B to Enable SETUP AND HOLD TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns except when noted
2.7V
0V
An
or Bn
Exxn
or LExxn
1.5V
An
or Bn
2.7V
0V
V
OH
V
OL
t
PLH
, t
PHL
t
w
1.5V
1.5V
1.5V
t
h
t
s
POSITIVE
PULSE
NEGATIVE
PULSE
1.5V
1.5V
t
w
1.5V
1.5V
t
w
WAVEFORM 3 – INPUT PULSE DEFINITION
tR = tF = 2.5ns, 10% to 90% of 0V to 2.7V
Figure 2. AC Waveforms (continued)
OPEN
PULSE
GENERAT OR
R
T
DUT
V
CC
R
L
R
1
C
L
6V
GND
TEST SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
6V
Open Collector/Drain t
PLH
and t
PHL
6V
t
PZH
, t
PHZ
GND
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = Z
OUT
of pulse generator (typically 50Ω)
Figure 3. Test Circuit
MC74LCX16543A
MOTOROLA LCX DATA
BR1339 — REV 3
8
OUTLINE DIMENSIONS
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1202–01
ISSUE A
S
U
M
0.12 (0.005) V
S
T
S
U
M
0.254 (0.010) T
–V–
B
A
L
K
–U–
56X REF
PIN 1
IDENT.
128
2956
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 13.90 14.10 0.547 0.555
B 6.00 6.20 0.236 0.244
C ––– 1.10 ––– 0.043
D 0.05 0.15 0.002 0.006
F 0.50 0.75 0.020 0.030
G 0.50 BSC 0.0197 BSC
H 0.12 ––– 0.005 –––
J 0.09 0.20 0.004 0.008
J1 0.09 0.16 0.004 0.006
K 0.17 0.27 0.007 0.011
K1 0.17 0.23 0.007 0.009
L 7.95 8.25 0.313 0.325
M 0 8 0 8
–W–
DETAIL E
J
K1
K
J1
SECTION N–N
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 DA TUM PLANE –W–.
0.076 (0.003)
SEATING
D
–T–
PLANE
C
G
H
M
0.25 (0.010)
F
DETAIL E
N
N
____
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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Opportunity/Affirmative Action Employer.
How to reach us:
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MC74LCX16543A/D
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