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OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS (INVERTING AND NONINVERTING)
The MC74F620 is an octal bus transceiver featuring inverting 3-state buscompatible outputs in both send and receive directions. The BN outputs are capable of sinking 64 mA and sourcing up to 15 mA, providing very good capacitive drive characteristics. The MC74F623 is a non-inverting version of the MC74F620. These octal bus transceivers are designed for asynchronous two-way communication between data busses. The control function implementation allows for maximum flexibility in timing. These devices allow data transmission from the A bus to the B bus or from B bus to A bus, depending upon the logic levels at the Enable inputs (OEBA and OEAB). The Enable inputs can be used to disable the device so that the busses are effectively isolated. The dual-enable configuration gives the MC74F620 and MC74F623 the capability to store data by the simultaneous enabling of OEBA and OEAB. Each output reinforces its input in this transceiver configuration. Thus, when both control inputs are enabled and all other data sources to the two sets of the bus lines are at high impedance, both sets of bus lines (16 in all) will remain at their last states. * High Impedance NPN base inputs for reduced loading (70 A in High and Low states) * Ideal for Applications which Require High Output drive and minimal bus loading * Octal Bidirectional Bus Interface * 3-State Buffer Outputs Sink 64 mA and Source 15 mA * - F620 Inverting - F623 Noninverting * ESD Protection > 4000 Volts
MC74F620 MC74F623
OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS (INVERTING AND NONINVERTING)
FASTTM SCHOTTKY TTL
20 1
J SUFFIX CERAMIC CASE 732-03
20 1
N SUFFIX PLASTIC CASE 738-03
20 1
DW SUFFIX SOIC CASE 751D-03
ORDERING INFORMATION
MC74FXXXJ Ceramic MC74FXXXN Plastic MC74FXXXDW SOIC
PIN ASSIGNMENTS
VCC OEBA B0 20 19 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 VCC OEBA B0 20 19 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11
F620
F623
1
2
3 A1
4 A2
5 A3
6 A4
7 A5
8 A6
9 A7
10 GND
1
2
3 A1
4 A2
5 A3
6 A4
7 A5
8 A6
9 A7
10 GND
OEAB A0
OEAB A0
FAST AND LS TTL DATA 4-383
MC74F620 * MC74F623
LOGIC SYMBOLS
2 A0 1 19 OEAB OEBA B0 18 B1 17 B2 16 3 A1 4 A2 5 A3 6 A4 7 A5 8 A6 9 A7 1 OEAB OEBA B0 18 B1 17 B2 16 2 A0 3 A1 4 A2 5 A3 6 A4 7 A5 8 A6 9 A7
F620
B3 15 B4 14 B5 13 B6 12 B7 11
19
F623
B3 15 B4 14 B5 13 B6 12 B7 11
FUNCTION TABLE Inputs OEBA L H H L OEAB L H L H F620 B data to A bus A data to B bus Z B data to A bus A data to B bus Operating Modes F623 B data to A bus A data to B bus Z B data to A bus A data to B bus
H = HIGH voltage level: L = LOW voltage level: X = Don't care: Z = High impedance "off" state
GUARANTEED OPERATING RANGES
Limits Symbol VCC TA IOH IOH IOL IOL DC Supply Voltage Operating Ambient Temperature Range Output Current High Output Current High Output Current Low Output Current Low An Outputs Bn Outputs An Outputs Bn Outputs Parameter 74 74 74 74 74 74 Min 4.5 0 -- -- -- -- Typ 5.0 25 -- -- -- -- Max 5.5 70 -3.0 -15 24 64 Unit V C mA mA mA mA
FAST AND LS TTL DATA 4-384
MC74F620 * MC74F623
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage 74 An VOH Output HIGH Voltage Bn 74 74 74 74 VOL VOL IOZH + IIH IOZL + IIL Output LOW Voltage Output LOW Voltage Output Off Current HIGH Output Off Current LOW OEBA, OEAB IIH Input HIGH Current OEBA, OEAB Others IIL IOS Input LOW Current Output Short Circuit Current (Note 2) Non I/O Pins A0-A7 B0-B7 ICCH ICC Power Supply Current F620 ICCL ICCZ ICC Power Supply Current F623 An Bn 74 74 2.0 -- -- 2.4 2.7 2.4 2.7 2.0 -- -- -- -- -- -- -- -- -60 -100 -- -- -- -- Typ -- -- -- 3.3 3.3 3.4 3.4 -- 0.35 -- -- -- -- -- -- -- -- -- -- -- -- -- Max -- 0.8 -1.2 -- -- -- -- -- 0.50 0.55 70 -70 20 100 1.0 -20 -150 mA -225 92 110 92 120 mA mA VCC = MAX, VOUT = GND Vout = HIGH Vout = LOW Vout = HIGH Z VCC = MAX VCC = MAX Unit V V V V V V V V V V A A A A mA A Test Conditions (Note 1) Guaranteed as a HIGH Signal Guaranteed as a LOW Signal VCC = MIN, IIN = -18 mA IOH = -3.0 mA IOH = -3.0 mA IOH = -3.0 mA IOH = -3.0 mA IOH = -15.0 mA IOL = 24 mA IOL = 64 mA VCC = MAX VCC = MAX VCC = 4.5 V VCC = 4.75 V VCC = 4.5 V VCC = 4.75 V VCC = 4.5 V VCC = MIN VCC = MIN VOUT = 2.7 V VOUT = 0.5 V
VCC = MAX, VIN = 2.7 V VCC = 0 V, VIN = 7.0 V VCC = MAX, VIN = 5.5 V VCC = MAX, VIN = 0.5 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 4-385
MC74F620 * MC74F623
LOGIC DIAGRAMS F620
OEBA OEAB 19 1 OEBA OEAB
19 1
F623
A0
2
18
B0
A0
2
18
B0
A1
3
17
B1
A1
3
17
B1
A2
4
16
B2
A2
4
16
B2
A3
5
15
B3
A3
5
15
B3
A4
6
14
B4
A4
6
14
B4
A5
7
13
B5
A5
7
13
B5
A6
8
12
B6
A6
8
12
B6
A7
9
11
B7
A7
9
11
B7
FAST AND LS TTL DATA 4-386
MC74F620 * MC74F623
AC ELECTRICAL CHARACTERISTICS For F620
74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Parameter Propagation Delay An to Bn and Bn to An Output Enable Time to High or Low level, OEBA to An Output Disable Time to High or Low level, OEBA to An Output Enable Time to High or Low level, OEAB to Bn Output Disable Time to High or Low level, OEAB to Bn Min 2.5 1.0 3.0 4.0 2.5 1.5 3.5 4.5 3.0 3.0 Typ -- -- -- -- -- -- -- -- -- -- Max 6.5 4.5 10.5 10.5 7.5 7.0 10.5 10.0 9.5 9.5 74F TA = 0C to +70C VCC = +5.0 V 10% CL = 50 pF Min 2.0 1.0 2.5 3.5 2.0 1.0 3.5 4.0 2.5 1.5 Typ -- -- -- -- -- -- -- -- -- -- Max 7.5 5.0 11.5 11.5 8.0 7.5 11.5 11.0 10.5 10.5 Unit ns ns ns ns ns
AC ELECTRICAL CHARACTERISTICS For F623
74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Propagation Delay An to Bn Propagation Delay Bn to An Output Enable Time to High or Low level, OEBA to An Output Disable Time to High or Low level, OEBA to An Output Enable Time to High or Low level, OEAB to Bn Output Disable Time to High or Low level, OEAB to Bn Parameter Min 2.0 3.0 2.0 3.0 3.5 5.0 1.5 1.5 3.5 4.5 3.0 4.0 Typ -- -- -- -- -- -- -- -- -- -- -- -- Max 5.5 7.0 6.0 7.0 10.5 9.5 6.5 6.5 10.0 9.0 8.5 9.0 74F TA = 0C to +70C VCC = +5.0 V 10% CL = 50 pF Min 2.0 2.5 2.0 2.5 3.5 5.0 1.5 1.5 3.5 4.5 3.0 2.0 Typ -- -- -- -- -- -- -- -- -- -- -- -- Max 6.5 7.5 6.5 7.5 12.0 10.0 7.5 7.0 11.5 9.5 10.0 10.0 Unit ns ns ns ns ns ns
FAST AND LS TTL DATA 4-387
Case 751D-03 DW Suffix 20-Pin Plastic SO-20 (WIDE) -A20 11
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. 3. CONTROLLING DIMENSION: MILLIMETER. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE.
-B1 10
P
0.25 (0.010)
M
B
M
5.
751D 01, AND 02 OBSOLETE, NEW STANDARD 751D 03.
10 PL
G R X 45 -TC K
M
SEATING PLANE
M D 20 PL
0.25 (0.010) T B
S
F
J
DIM A B C D F G J K M P R
MILLIMETERS MIN MAX
12.65 7.40 2.35 0.35 0.50 12.95 7.60 2.65 0.49 0.90
INCHES MIN MAX
0.499 0.292 0.093 0.014 0.020 0.510 0.299 0.104 0.019 0.035
1.27 BSC 0.25 0.10 0 10.05 0.25 0.32 0.25 7 10.55 0.75
0.050 BSC 0.010 0.004 0 0.395 0.010 0.012 0.009 7 0.415 0.029
A
S
Case 732-03 J Suffix 20-Pin Ceramic Dual In-Line
NOTES: 1. LEADS WITHIN 0.25 mm (0.010) DIA., TRUE POSITION AT SEATING PLANE, AT MAXIMUM
20 1
11
2.
MATERIAL CONDITION. DIM L TO CENTER OF LEADS WHEN FORMED PARALLEL.
10
3.
DIM A AND B INCLUDES MENISCUS.
B A F C L
N H D
SEATING PLANE
J M
G
K
DIM A B C D F G H J K L M N
MILLIMETERS MIN MAX
23.88 6.60 3.81 0.38 1.40 25.15 7.49 5.08 0.56 1.65
INCHES MIN MAX
0.940 0.260 0.150 0.015 0.055 0.990 0.295 0.200 0.022 0.065
2.54 BSC 0.51 0.20 3.18 1.27 0.30 4.06
0.100 BSC 0.020 0.008 0.125 0.050 0.012 0.160
7.62 BSC 0 0.25 15 1.02
0.300 BSC 0 0.010 15 0.040
Case 738-03 N Suffix 20-Pin Plastic -A20 1 11 10
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. 3. CONTROLLING DIMENSION: INCH. DIMENSION L" TO CENTER OF LEAD WHEN FORMED PARALLEL.
B C L
4.
DIMENSION B" DOES NOT INCLUDE MOLD FLASH.
5.
738 02 OBSOLETE, NEW STANDARD 738 03.
-TSEATING PLANE
K E G F D 20 PL
0.25 (0.010)
M
N
M J 20 PL
0.25 (0.010) T A
M M
T
B
M
DIM A B C D E F G J K L M N
MILLIMETERS MIN MAX
25.66 6.10 3.81 0.39 27.17 6.60 4.57 0.55
INCHES MIN MAX
1.010 0.240 0.150 0.015 1.070 0.260 0.180 0.022
1.27 BSC 1.27 1.77
0.050 BSC 0.050 0.070
2.54 BSC 0.21 2.80 0.38 3.55
0.100 BSC 0.008 0.110 0.015 0.140
7.62 BSC 0 0.51 15 1.01
0.300 BSC 0 0.020 15 0.040
FAST AND LS TTL DATA 4-388
LOGIC DIAGRAM
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 can and do vary in different applications. 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.
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FAST AND LS TTL DATA 4-389

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