MOTOROLA MC74F543DW

MC74F543
OCTAL REGISTERED
TRANSCEIVER,
NON-INVERTING, 3-STATE
OCTAL REGISTERED
TRANSCEIVER,
NON-INVERTING, 3-STATE
The MC74F543 Octal Registered Transceivers contain two sets of data
flowing in either direction. Separate Latch Enable (LEAB, LEBA) and Enable
(OEAB, OEBA) inputs are provided for each register to permit independent
control of inputting and outputting in either direction of data flow. The
MC74F543 has a noninverting data path. The A outputs are guaranteed to
sink 20 mA while the B outputs are rated for 64 mA.
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FAST SCHOTTKY TTL
Combines 74F245 and 74F373 Type Functions in One Chip
8-Bit Octal Transceiver
Non-Inverting
Back-to-Back Registers for Storage
Separate Controls for Data Flow in Each Direction
Glitchless Outputs During 3-State Power Up or Power Down Operation
High Impedance Outputs in Power Off State
A Outputs Sink 24 mA and Source 3.0 mA
B Outputs Sink 64 mA and Source 15 mA
See F544 for Inverting Version
ESD Protection > 4000 Volts
1
PIN ASSIGNMENT
VCC EBA
24
23
N SUFFIX
PLASTIC
CASE 724-03
24
DW SUFFIX
SOIC
CASE 751E-03
24
B0
B1
B2
B3
B4
B5
B6
B7 LEAB OEAB
22
21
20
19
18
17
16
15
14
1
13
ORDERING INFORMATION
MC74FXXXN
Plastic
MC74FXXXDW SOIC
1
2
3
LEBA OEBA A0
4
5
6
7
8
9
10
11
A1
A2
A3
A4
A5
A6
A7
EAB GND
12
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
74
0
25
70
°C
IOH
Output Current — High
74
– 3.0 / – 15
mA
IOL
Output Current — Low
74
24 / 64
mA
FAST AND LS TTL DATA
4-212
MC74F543
FUNCTION TABLE
Inputs
EXX
LEXX
Data
Outputs
H
X
X
X
Z
Outputs disabled
L
L
H
H
L
L
l
h
Z
Z
Outputs disabled
Data latched
L
L
L
L
H
H
l
h
L
H
Data latched
L
L
L
L
L
L
L
H
L
H
Transparent
OEXX
Status
H = HIGH voltage level: h = HIGH state must be present one set-up time before the LOW-to-HIGH transition of LEXX or EXX (XX = AB or BA): L = LOW Voltage Level:
I = LOW state must be present one set-up time before the LOW-to-HIGH transition of LEXX or EXX (XX = AB or BA): X = Don’t care: Z = HIGH impedance state.
FUNCTIONAL DESCRIPTION
The MC74F543 contains two sets of eight D-type latches,
with separate input and controls for each set. For data flow
from A to B, for example, the A-to-B Enable (EAB) Input must
be LOW in order to enter data from A0 – A7 or take data from
B0 – B7, 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 puts the A latches in the storage
mode and their outputs no longer change with the A inputs.
With EAB and OEAB both LOW, the 3-State B output buffers
are active and reflects the data present at the output of the A
latches. Control of data flow from B to A is similar, but using
the EBA, LEBA, and OEBA inputs.
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Min
Parameter
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VIK
Input Clamp Diode Voltage
Typ
Max
2.0
–0.73
Unit
Test Conditions
V
Guaranteed Input HIGH Voltage
0.8
V
Guaranteed Input LOW Voltage
– 1.2
V
VCC = MIN, IIN = – 18 mA
V
IOH = – 3.0 mA
V
IOH = – 15 mA
2.4
VOH
VOL
A0 – A7
74
B0 – B7
74
A0 – A7
74
0.35
0.5
V
IOL = 24 mA
B0 – B7
74
0.4
0.55
V
IOL = 64 mA
1.0
mA
2.7
Output HIGH Voltage
3.4
2.0
Output LOW Voltage
I/O Pins
IIH
100
Input HIGH Current
Control Pins
20
IIL
Input LOW Current
IOZH
Off-State Output Current,
High-Level Voltage Applied
IOZL
Off-State Output Current,
Low-Level Voltage Applied
IOS
Output Short Circuit Current (Note 2)
ICC
Total Supply Current
EAB, EBA
– 1.2
Other Inputs
– 0.6
µA
mA
70
µA
VCC = 4.5 V
VCC = 4.75 V
VCC = 4.5 V
VCC = MIN
VCC = MAX, VIN = 5.5 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 0.5 V
VCC = MAX
VOUT = 2.7 V
1.0
mA
– 600
µA
VCC = MAX, VOUT = 0.5 V
mA
VCC = MAX, VOUT = 0 V
mA
VCC = MAX
An Outputs
– 60
–150
Bn Outputs
– 100
–225
ICCH
70
100
ICCL
95
125
ICCZ
95
125
VOUT = 5.5 V
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
FAST AND LS TTL DATA
4-213
MC74F543
AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
74F
74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
TA = 0°C to + 70°C
VCC = + 5.0 V ± 10%
CL = 50 pF
Min
Typ
Max
Min
Max
70
Unit
fMAX
Maximum Clock Frequency
70
100
MHz
tPLH
tPHL
Propagation Delay
Transparent Mode
An to Bn or Bn to An
3.0
3.0
5.5
5.0
7.5
6.5
3.0
3.0
8.5
7.5
ns
tPLH
tPHL
Propagation Delay
LEBA to An
4.5
4.5
8.5
8.5
11
11
4.5
4.5
12.5
12.5
ns
tPLH
tPHL
Propagation Delay
LEAB to Bn
4.5
4.5
8.5
8.5
11
11
4.5
4.5
12.5
12.5
ns
tPZH
tPZL
Output Enable Time to
OEBA or OEAB to An or Bn
EBA or EAB to An or Bn
3.0
4.0
7.0
7.5
9.0
10.5
3.0
4.0
10
12
ns
tPHZ
tPLZ
Output Disable Time to
OEBA or OEAB to An or Bn
EBA or EAB to An or Bn
2.5
2.0
6.0
5.5
8.0
7.5
2.5
2.0
9.0
8.5
ns
AC OPERATING REQUIREMENTS
Symbol
Parameter
Min
74F
74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
TA = 0°C to + 70°C
VCC = + 5.0 V ± 10%
CL = 50 pF
Typ
Max
Min
Typ
Max
Unit
ts(H)
ts(L)
Setup Time, HIGH or LOW
An or Bn to LEBA or LEAB
3.0
3.0
3.5
3.5
ns
th(H)
th(L)
Hold Time, HIGH or LOW
An to Bn to LEBA or LEAB
3.0
3.0
3.5
3.5
ns
tw(L)
Latch Enable, B to A
Pulse Width, LOW
8.0
9.0
ns
FAST AND LS TTL DATA
4-214
MC74F543
LOGIC DIAGRAM
DETAIL A
D Q
B0
LE
Q D
A0
LE
A1
A2
B1
B2
A3
A4
B3
B4
DETAIL A X 7
A5
B5
A6
B6
A7
B7
OEBA
OEAB
EBA
EAB
LEBA
LEAB
NOTE:
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
FAST AND LS TTL DATA
4-215