PHILIPS N74F621N Octal bus transceiver, non-inverting open collector Datasheet

INTEGRATED CIRCUITS
74F621
Octal bus transceiver, non-inverting
(open collector)
Product specification
IC15 Data Handbook
1996 Jan 05
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
FEATURES
74F621
PIN CONFIGURATION
• High-impedance NPN base inputs for reduced loading
1
20
VCC
A0 2
19
OEBA
A1 3
18
B0
A2 4
17
B1
A3 5
16
B2
A4 6
15
B3
A5 7
14
B4
A6 8
13
B5
A7 9
12
B6
11
B7
OEAB
(20µA in High and Low states)
• Octal bidirectional bus interface
• Open collector outputs sink 64mA
• Non-inverting
DESCRIPTION
The 74F621 is an octal transceiver featuring non-inverting open
collector bus-compatible outputs in both send and receive
directions. The outputs are capable of sinking 64mA, providing very
good capacitive drive characteristics.
GND 10
This octal bus transceiver is designed for asynchronous two-way
communication between data buses. The control function
implementation allows for maximum flexibility in timing.
SF01135
The device allows data transmission from the A bus to the B bus or
from the B bus to the 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 buses are effectively isolated.
The dual-enable configuration gives the 74F621 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 in their last states.
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL SUPPLY CURRENT
(TOTAL)
74F621
8.0ns
105mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
PKG
DWG #
20-pin plastic DIP
N74F621N
SOT146-1
20-pin plastic SOL
N74F621D
SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
A0 - A7, B0 - B7
Data inputs
1.0/0.033
20µA/20µA
OEBA, OEAB
Output Enable inputs
1.0/0.033
20µA/20µA
A0 - A7
Data outputs
OC/40
OC/24mA
B0 - B7
Data outputs
OC/106.7
OC/64mA
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. OC = Open Collector.
1996 Jan 05
2
853–0380 16185
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
LOGIC SYMBOL
74F621
LOGIC SYMBOL (IEEE/IEC)
19
2
3
A0
1
OEAB
19
OEBA
4
A1
A2
5
A3
6
A4
7
A5
8
A6
9
EN1
1
A7
EN2
2
18
1
2
B0
18
B1
B2
B3
B4
B5
B6
B7
17
16
15
14
13
12
11
VCC = Pin 20
GND = Pin 10
3
17
4
16
5
15
6
14
7
13
SF01126
8
12
9
11
SF01137
LOGIC DIAGRAM
FUNCTION TABLE
INPUTS
19
OPERATING MODES
OEBA
OEAB 1
A0 2
18
3
17
A1
4
16
A3 5
15
A4 6
14
A5 7
13
A6 8
12
9
11
A2
A7
VCC =
GND =
Pin 20
Pin 10
1996 Jan 05
OEBA
OEAB
L
L
B data to A bus
H
H
A data to B bus
H
L
OFF
L
H
B0
B data to A bus
B1
H =
L =
X =
OFF=
B2
B3
B4
B5
B6
B7
SF01130
3
A data to B bus
High voltage level
Low voltage level
Don’t care
High if pull-up resistor is connected to open collector output
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
74F621
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
VOUT
Voltage applied to output in High output state
IOUT
O
Current applied to output in Low output state
Tamb
Operating free-air temperature range
Tstg
Storage temperature range
–30 to +5
mA
–0.5 to +5.5
V
48
mA
A0–A7
B0–B7
128
mA
0 to +70
°C
–65 to +150
°C
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
MIN
NOM
MAX
5.0
5.5
UNIT
VCC
Supply voltage
4.5
V
VIH
High-level input voltage
2.0
VIL
Low-level input voltage
0.8
V
IIK
Input clamp current
–18
mA
VOH
High-level output current
4.5
V
A0–A7
24
mA
IOL
O
Low level output current
Low-level
B0–B7
64
mA
Tamb
Operating free-air temperature range
70
°C
V
0
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
SYMBOL
TEST CONDITIONSNO TAG
PARAMETER
MIN
IOH
High-level output current
Low-level output
voltage
B0 B7
B0–B7
VIK
Input clamp voltage
II
Input current at
input
maximum in
ut
voltage
IIH
High-level input current
IIL
Low-level input current
ICC
Supply current
(total)
250
µA
±10%VCC
0.35
0.50
V
±5%VCC
0.35
0.50
V
IOL = 48mA
±10%VCC
0.38
0.55
V
IOL = 64mA
±5%VCC
0.42
0.55
V
–0.73
–1.2
V
100
µA
IOL
O = 24mA
VCC = MIN,
VIL = MAX
MAX,
VIH = MIN,
UNIT
MAX
VCC = MIN, VIL = MAX, VIH=MIN, VOH = MAX
A0 A7
A0–A7
VOL
O
TYP
NO TAG
VCC = MIN, II = IIK
OEBA, OEAB
VCC = MAX, VI = 7.0V
others
VCC = 0.0V, VI = 5.5V
1
mA
VCC = MAX, VI = 2.7V
20
µA
VCC = MAX, VI = 0.5V
–20
µA
ICCH
ICCL
VCC = MAX
OEBA = OEAB = A0–A7 = 4.5V
105
140
mA
OEBA = OEAB = 4.5V,
A0–A7 = GND
105
140
mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at VCC = 5V, Tamb = 25°C.
1996 Jan 05
4
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
74F621
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
TEST
CONDITION
PARAMETER
VCC = +5V ± 10%
Tamb = 0°C to +70°C
CL = 50pF, RL = 500Ω
VCC = +5V
Tamb = +25°C
CL = 50pF, RL = 500Ω
MIN
TYP
MAX
MIN
MAX
UNIT
tPLH
tPHL
Propagation delay
An to Bn
Waveform 1
6.0
4.0
9.5
6.0
12.0
8.0
5.5
3.5
13.0
8.5
ns
tPLH
tPHL
Propagation delay
Bn to An
Waveform 1
6.0
3.5
9.0
5.5
12.0
7.5
5.5
3.0
12.5
8.0
ns
tPLH
tPHL
Propagation delay
OEBA to An
Waveform 2
6.0
3.5
10.0
6.5
13.5
10.5
5.5
3.0
14.0
11.0
ns
tPLH
tPHL
Propagation delay
OEAB to Bn
Waveform 3
7.0
3.5
12.0
6.5
15.0
9.5
6.0
3.0
17.0
10.0
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V.
An or Bn
VM
VM
tPLH
tPHL
VM
Bn or An
VM
SF01132
Waveform 1. For Non-Inverting Outputs
OEBA
VM
tPLH
Bn
OEAB
VM
tPHL
VM
VM
tPHL
VM
Bn
SF01138
tPLH
VM
VM
SF01139
Waveform 2. Propagation Delay, OEBA to An
1996 Jan 05
VM
Waveform 3. Propagation Delay, OEAB to Bn
5
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
74F621
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
18
16
14
12
tPLH
10
Propagation
delay (ns)
8
6
tPHL
4
2
0
0
100
200
300
400
Load Resistor ()
500
600
SF01153
NOTE:
When using open-collector parts, the value of the pull-up resistor greatly affects the value of the tPLH. For example, changing the pull-up
resistor value from 500 to 100 will improve the tPLH up to 50% with only slight increase in the tPHL. However, if the pull-up resistor is
changed, the user must take certain that the total IOL current through the resistor and the total IIL’s of the receivers do not exceed the IOL
maximum specification.
TEST CIRCUIT AND WAVEFORMS
7.0V
VCC
tw
90%
VIN
RL
VOUT
PULSE
GENERATOR
NEGATIVE
PULSE
VM
CL
AMP (V)
VM
10%
D.U.T.
RT
90%
10%
tTHL (tf )
tTLH (tr )
tTLH (tr )
tTHL (tf )
0V
RL
AMP (V)
90%
90%
Test Circuit for Open Collector Outputs
POSITIVE
PULSE
VM
VM
10%
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
10%
tw
0V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
family
amplitude VM
74F
3.0V
1.5V
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
2.5ns
SF00027
1996 Jan 05
6
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
DIP20: plastic dual in-line package; 20 leads (300 mil)
1996 Jan 05
7
74F621
SOT146-1
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
SO20: plastic small outline package; 20 leads; body width 7.5 mm
1996 Jan 05
8
74F621
SOT163-1
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
NOTES
1996 Jan 05
9
74F621
Philips Semiconductors
Product specification
Octal bus transceiver, non-inverting (open collector)
74F621
DEFINITIONS
Data Sheet Identification
Product Status
Definition
Objective Specification
Formative or in Design
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
Preliminary Specification
Preproduction Product
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
Product Specification
Full Production
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICATIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Philips Semiconductors and Philips Electronics North America Corporation
register eligible circuits under the Semiconductor Chip Protection Act.
 Copyright Philips Electronics North America Corporation 1996
All rights reserved. Printed in U.S.A.
(print code)
Document order number:
Date of release: July 1994
9397-750-05147
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