View MC74F620DW_94619.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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 OEAB A0
3 A1
4 A2
5 A3
6 A4
7 A5
8 A6
9 A7
10 GND
1 2 OEAB A0
3 A1
4 A2
5 A3
6 A4
7 A5
8 A6
9 A7
10 GND
FAST AND LS TTL DATA 4-233
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 4-234
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 4-235
MC74F620 * MC74F623
LOGIC DIAGRAMS F620
19 OEBA OEAB 1 OEBA OEAB 1 19
F623
2 A0
18 B0 A0
2
18 B0
3 A1
17 B1 A1
3
17 B1
4 A2
16
4 B2 A2
16
B2
A3
5
15 B3 A3
5
15 B3
6 A4
14 B4 A4
6
14 B4
7 A5
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 4-236
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 4-237

▲Up To Search▲

Price & Availability of MC74F620DW

	To Download MC74F620DW Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .