SEMICONDUCTOR TECHNICAL DATA
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The MC74LCX16543 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 MC74LCX16543 inputs to be safely driven from 5V devices.
The MC74LCX16543 is suitable for memory address driving and all TTL
level bus oriented transceiver applications.
LOW–VOLTAGE CMOS
16–BIT LATCHING
TRANSCEIVER
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 symetric to that above, but uses the EBA,
LEBA, and OEBA inputs.
•
•
•
•
•
•
•
•
•
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1202–01
Designed for 2.7 to 3.6V VCC Operation
5.2ns 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
PIN NAMES
LVCMOS Compatible
Pins
Function
24mA Balanced Output Sink and Source Capability
OExxn
Exxn
LExxn
A0–A15
B0–B15
Output Enable Inputs
Enable Inputs
Latch Enable Inputs
3–State Inputs/Outputs
3–State Inputs/Outputs
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
This document contains information on a new product. Specifications and information herein are subject to
change without notice.
11/96
Motorola, Inc. 1996
1
REV 0.2
MC74LCX16543
LOGIC DIAGRAM
Pinout: 56-Lead TSSOP
(Top View)
DETAIL A
D
52
B0
Q
LE
D
5
A0
Q
LE
DETAIL A x 7
1
54
OEAB1
EAB1
3
LEAB1
LEBA1
55
2
DETAIL B
D
42
B8
Q
LE
15
A8
LEBA2
LEAB1 2
55 LEBA1
EAB1 3
54 EBA1
GND 4
53 GND
A0 5
52 B0
A1 6
51 B1
50 VCC
A2 8
49 B2
A3 9
48 B3
A4 10
47 B4
GND 11
46 GND
A5 12
45 B5
A6 13
44 B6
A7 14
43 B7
A8 15
42 B8
A9 16
41 B9
A10 17
40 B10
GND 18
39 GND
D
A11 19
38 B11
LE
A12 20
37 B12
A13 21
36 B13
VCC 22
35 VCC
A14 23
34 B14
A15 24
33 B15
Q
DETAIL Bx 7
OEBA2
EBA2
56 OEBA1
VCC 7
56
OEBA1
EBA1
OEAB1 1
29
28
31
26
30
27
OEAB2
EAB2
GND 25
32 GND
EAB2 26
31 EBA2
LEAB2 27
30 LEBA2
OEAB2 28
29 OEBA2
LEAB2
MOTOROLA
2
LCX DATA
BR1339 — REV 3
MC74LCX16543
FUNCTION TABLE
Inputs
OEABn
OEBAn
H
H
L
EABn
Data Ports
EBAn
LEBAn
An
Bn
Input
Input
Operating Mode
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
Input
Output
H
H
X*
L
H
LEABn
X*
L
X
l
h
Z
Z
Load and B Outputs Disabled
H
X
X
Z
Hold; B Outputs Disabled
L
X
L
H
L
H
Transparent A to B
H
X
l
h
L
H
Latch and Display B Outputs
Output
Input
X
L
Z
Z
l
h
Load and A Outputs Disabled
X
H
Z
X
Hold; A Outputs DIsabled
X
L
L
H
L
H
Transparent B to A
X
H
L
H
l
h
Latch and Display A Outputs
L
X*
H
X*
L
H = High Voltage Level; h = High Voltage Level One Setup Time 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 Transition; 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
VCC
DC Supply Voltage
VI
VO
Value
Condition
Unit
–0.5 to +7.0
V
DC Input Voltage
–0.5 ≤ VI ≤ +7.0
V
DC Output Voltage
–0.5 ≤ VO ≤ +7.0
Output in 3–State
V
–0.5 ≤ VO ≤ VCC + 0.5
Note 1.
V
IIK
DC Input Diode Current
–50
VI < GND
mA
IOK
DC Output Diode Current
–50
VO < GND
mA
+50
VO > VCC
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 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.
LCX DATA
BR1339 — REV 3
3
MOTOROLA
MC74LCX16543
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Operating
Data Retention Only
Min
Typ
Max
Unit
2.0
1.5
3.3
3.3
3.6
3.6
V
0
5.5
V
0
0
VCC
5.5
V
VCC
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH
HIGH Level Output Current, VCC = 3.0V – 3.6V
–24
mA
IOL
LOW Level Output Current, VCC = 3.0V – 3.6V
24
mA
IOH
HIGH Level Output Current, VCC = 2.7V – 3.0V
–12
mA
IOL
LOW Level Output Current, VCC = 2.7V – 3.0V
12
mA
TA
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
(HIGH or LOW State)
(3–State)
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol
Characteristic
Condition
Min
2.0
VIH
HIGH Level Input Voltage (Note 2.)
2.7V ≤ VCC ≤ 3.6V
VIL
LOW Level Input Voltage (Note 2.)
2.7V ≤ VCC ≤ 3.6V
VOH
HIGH Level Output Voltage
VOL
LOW Level Output Voltage
Max
V
0.8
2.7V ≤ VCC ≤ 3.6V; IOH = –100µA
VCC – 0.2
VCC = 2.7V; IOH = –12mA
2.2
VCC = 3.0V; IOH = –18mA
2.4
VCC = 3.0V; IOH = –24mA
2.2
Unit
V
V
2.7V ≤ VCC ≤ 3.6V; IOL = 100µA
0.2
VCC = 2.7V; IOL= 12mA
0.4
VCC = 3.0V; IOL = 16mA
0.4
VCC = 3.0V; IOL = 24mA
0.55
V
II
Input Leakage Current
2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V
±5.0
µA
IOZ
3–State Output Current
2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;
VI = VIH or V IL
±5.0
µA
IOFF
Power–Off Leakage Current
VCC = 0V; VI or VO = 5.5V
10
µA
ICC
Quiescent Supply Current
2.7 ≤ VCC ≤ 3.6V; VI = GND or VCC
20
µA
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V
±20
µA
500
µA
∆ICC
Increase in ICC per Input
2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V
2. These values of VI are used to test DC electrical characteristics only.
MOTOROLA
4
LCX DATA
BR1339 — REV 3
MC74LCX16543
AC CHARACTERISTICS (Note 3.; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Limits
TA = –40°C to +85°C
VCC = 3.0V to 3.6V
Symbol
Parameter
VCC = 2.7V
Waveform
Min
Max
Min
Max
Unit
tPLH
tPHL
Propagation Delay
An to Bn or Bn to An
1
1.5
1.5
5.2
5.2
1.5
1.5
6.0
6.0
ns
tPLH
tPHL
Propagation Delay
LEBAn to An or LEABn to Bn
4
1.5
1.5
6.5
6.5
1.5
1.5
7.5
7.5
ns
tPZH
tPZL
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
tPHZ
tPLZ
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
tPZH
tPZL
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
tPHZ
tPLZ
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
ts
Setup Time, HIGH to LOW Data to LExxn
4
2.5
2.5
ns
th
Hold Time, HIGH to LOW Data to LExxn
4
1.5
1.5
ns
ts
Setup Time, HIGH to LOW Data to Exxn
4
2.5
2.5
ns
th
Hold Time, HIGH to LOW Data to Exxn
4
1.5
1.5
ns
tw
Latch Enable or Enable Pulse Width, LOW
4
3.0
3.0
ns
tOSHL
tOSLH
Output–to–Output Skew
(Note 4.)
1.0
1.0
ns
3. These AC parameters are preliminary and may be modified prior to release. The maximum AC limits are design targets. Actual performance
will be specified upon completion of characterization.
4. 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 = +25°C
Symbol
Characteristic
Condition
VOLP
Dynamic LOW Peak Voltage (Note 5.)
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
Min
Typ
0.8
Max
Unit
V
VOLV
Dynamic LOW Valley Voltage (Note 5.)
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
5. 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
CIN
Input Capacitance
VCC = 3.3V, VI = 0V or VCC
7
pF
CI/O
Input/Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
pF
CPD
Power Dissipation Capacitance
10MHz, VCC = 3.3V, VI = 0V or VCC
20
pF
LCX DATA
BR1339 — REV 3
5
MOTOROLA
MC74LCX16543
2.7V
An
or Bn
1.5V
0V
tPLH, tPHL
VOH
Bn
or An
1.5V
VOL
WAVEFORM 1 – A/B to B/A PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
2.7V
OExxn
or Exxn
1.5V
1.5V
0V
tPZH
tPHZ
VOH – 0.3V
An
or Bn
1.5V
≈ 0V
tPZL
An
or Bn
tPLZ
≈ 3.0V
1.5V
VOL + 0.3V
WAVEFORM 2 – OExx/Exx to A or B OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
Figure 1. AC Waveforms
MOTOROLA
6
LCX DATA
BR1339 — REV 3
MC74LCX16543
2.7V
An
or Bn
1.5V
0V
tw
NEGATIVE
PULSE
ts
th
1.5V
1.5V
2.7V
Exxn
or LExxn
tw
1.5V
1.5V
0V
tPLH, tPHL
POSITIVE
PULSE
VOH
1.5V
1.5V
An
or Bn
tw
1.5V
VOL
WAVEFORM 3 – INPUT PULSE DEFINITION
tR = tF = 2.5ns, 10% to 90% of 0V to 2.7V
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
Figure 2. AC Waveforms (continued)
VCC
PULSE
GENERATOR
R1
DUT
CL
RT
TEST
6V
OPEN
GND
RL
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
6V
Open Collector/Drain tPLH and tPHL
tPZH, tPHZ
6V
GND
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
Figure 3. Test Circuit
LCX DATA
BR1339 — REV 3
7
MOTOROLA
MC74LCX16543
OUTLINE DIMENSIONS
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 1202–01
ISSUE A
56X
K REF
0.12 (0.005)
M
T U
S
V
K
K1
S
T U
S
J J1
29
0.254 (0.010)
M
56
SECTION N–N
B
–U–
L
ÉÉÉ
ÇÇÇ
ÇÇÇ
ÉÉÉ
1
N
28
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–.
A
–V–
PIN 1
IDENT.
N
F
DETAIL E
D
C
0.25 (0.010)
–W–
0.076 (0.003)
–T– SEATING
PLANE
M
DETAIL E
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
13.90
14.10
6.00
6.20
–––
1.10
0.05
0.15
0.50
0.75
0.50 BSC
0.12
–––
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
0.547
0.555
0.236
0.244
–––
0.043
0.002
0.006
0.020
0.030
0.0197 BSC
0.005
–––
0.004
0.008
0.004
0.006
0.007
0.011
0.007
0.009
0.313
0.325
0_
8_
H
G
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
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. “Typical” 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
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
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
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution;
P.O. Box 5405, Denver, Colorado 80217. 1–800–441–2447
JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
Mfax: [email protected] – TOUCHTONE 602–244–6609
INTERNET: http://Design–NET.com
ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
◊
MOTOROLA
8
MC74LCX16543/D
LCX DATA
BR1339 — REV 3