Page 1
INTEGRATED CIRCUITS
74F620
Octal bus transceiver, inverting (3tate)
74F623
Octal bus transceiver, non–inverting
(3tate)
Product specification
IC15 Data Handbook
1989 Apr 06
Page 2
Philips Semiconductors Product specification
74F620/74F623T ransceivers
74F620 Octal Bus Transceiver, Inverting (3-State)
74F623 Octal Bus Transceiver, Non-Inverting (3-State)
FEA TURES
•High-impedance NPN base inputs for reduced loading
(70µA 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 64mA and source 15mA
•74F620, inverting
•74F623, non-inverting
DESCRIPTION
The 74F620 is an octal transceiver featuring inverting 3-State
bus-compatible outputs in both send and receive directions. The
outputs are capable of sinking 64mA and sourcing up to 15mA,
providing very good capacitive drive characteristics. The 74F623 is
a non-inverting version of the 74F620.
These octal bus transceivers are designed for asynchronous
two-way communication between data buses. The control function
implementation allows for maximum flexibility in timing.
These devices allow data transmission from the A bus to the B bus
Enable inputs (OEBA
disable the device so that the buses are effectively isolated.
The dual-enable configuration gives the 74F620 and 74F623 the
capability to store data by the simultaneous enabling of OEBA
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
74F620 3.5ns 80mA
74F623 4.5ns 105mA
ORDERING INFORMATION
DESCRIPTION
20-pin plastic DIP N74F620N, N74623N SOT146-1
20-pin plastic SOL N74F620D, N74623D SOT163-1
and OEAB). The Enable inputs can be used to
TYPICAL
PROPAGATION
DELA Y
TYPICAL SUPPL Y CURRENT
(TOTAL)
COMMERCIAL RANGE
VCC = 5V ±10%,
T
= 0°C to +70°C
amb
PKG DWG #
or from the B bus to the A bus depending upon the logic levels at the
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS DESCRIPTION
74F(U.L.)
HIGH/LOW
A0 - A7, B0 - B7 Data inputs 3.5/1.16 70µA/70µA
OEBA, OEAB Output Enable inputs 1.0/0.033 20µA/20µA
A0 - A7 Data outputs 150/40 3mA/24mA
B0 - B7 Data outputs 750/106.7 15mA/64mA
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOAD VALUE
HIGH/LOW
and
PIN CONFIGURATION – 74F620
1
OEAB
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
10 11
GND
1990 Apr 6 853–0379 96249
20
19
18
17
16
15
14
13
12
SF01124
V
CC
OEBA
B0
B1
B2
B3
B4
B5
B6
B7
PIN CONFIGURATION – 74F623
1
OEAB
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
10 11
GND
2
20
19
18
17
16
15
14
13
12
SF01124
V
CC
OEBA
B0
B1
B2
B3
B4
B5
B6
B7
Page 3
Philips Semiconductors Product specification
74F620/74F623Transceivers
LOGIC SYMBOL – 74F620
89
SF01125
1
19
VCC= Pin 20
GND = Pin 10
23
A0 A1
OEAB
OEBA
B0 B1 B2 B3
18 17 16 15
456
A2 A3
A4 A5 A67A7
B4 B5 B611B7
14 13 12
IEC/IEEE SYMBOL (IEEE/IEC) – 74F620
1
19
EN1
EN2
2
3
4
5
6
7
8
9
1
2
18
17
16
15
14
13
12
11
LOGIC SYMBOL – 74F623
89
SF01126
1
19
VCC= Pin 20
GND = Pin 10
23
A0 A1
OEAB
OEBA
B0 B1 B2 B3
18 17 16 15 14 13 12 11
456
A2 A3
A4 A5 A67A7
B4 B5 B6 B7
IEC/IEEE SYMBOL (IEEE/IEC) – 74F623
1
19
EN1
EN2
2
3
4
5
6
7
8
9
1
2
18
17
16
15
14
13
12
11
1990 Apr 6
SF01127
SF01128
3
Page 4
Philips Semiconductors Product specification
L
H
74F620/74F623Transceivers
LOGIC DIAGRAM – 74F620
19
OEBA
1
OEAB
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
LOGIC DIAGRAM – 74F623
19
OEBA
1
OEAB
18
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
18
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
VCC= Pin 20
GND = Pin 10
SF01129
FUNCTION TABLE
INPUTS OPERATING MODES
OEBA OEAB 74F620 74F623
L L B data to A bus B data to A bus
H H A data to B bus A data to B bus
H L Z Z
B data to A bus B data to A bus
A data to B bus A data to B bus
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
VCC= Pin 20
GND = Pin 10
SF01130
1990 Apr 6
4
Page 5
Philips Semiconductors Product specification
I
Current applied to output in Low output state
SYMBOL
PARAMETER
UNIT
IOHHigh-level output current
IOLLow-level output current
74F620/74F623Transceivers
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
V
V
I
IN
V
OUT
T
T
CC
IN
OUT
amb
stg
Supply voltage –0.5 to +7.0 V
Input voltage –0.5 to +7.0 V
Input current –30 to +5 mA
Voltage applied to output in High output state –0.5 to +V
pp
p
Operating free-air temperature range 0 to +70 °C
Storage temperature range –65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
V
V
V
I
T
CC
IH
IL
IK
amb
Supply voltage 4.5 5.0 5.5 V
High-level input voltage 2.0 V
Low-level input voltage 0.8 V
Input clamp current –18 mA
p
p
Operating free-air temperature range 0 70 °C
PARAMETER RATING UNIT
CC
p
A0–A7 48 mA
B0–B7 128 mA
LIMITS
MIN NOM MAX
A0–A7 –3 mA
B0–B7 –15 mA
A0–A7 24 mA
B0–B7 64 mA
V
1990 Apr 6
5
Page 6
Philips Semiconductors Product specification
NO TAG
I
3mA
VOHHigh-level output voltage
V
MAX
B0–B7
I
15mA
A0–A7
I
24mA
VOLLow-level output voltage
V
MAX
B0–B7
I
in ut voltage
OEAB
I
V
MAX
I
y
74F620/74F623Transceivers
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
SYMBOL PARAMETER TEST CONDITIONS
MIN
TYP
NO TAG
MAX
UNIT
V
IK
I
I
I
IH
I
IL
I
OZH+IIH
I
OZL+IIL
OS
CC
A0–A7
B0–B7
p
VCC = MIN,
=
IL
V
= MIN
IH
,
VCC = MIN,
=
p
IL
V
IH
,
= MIN,
Input clamp voltage VCC = MIN, II = I
Input current at maximum
p
High-level input current
Low-level input current
Off-state output current,
High-level of voltage applied
Off-state output current,
Low-level of voltage applied
Short-circuit output cur-
NO TAG
rent
74F620
Supply current
(total)
74F623
OEBA,
OEAB
others VCC = 5.5V, VI = 5.5V 1 mA
OEBA,
A0–A7
B0–B7
A0–A7
B0–B7
I
I
I
I
I
I
VCC = 0.0V, VI = 7.0V 100 µA
VCC = MAX, VI = 2.7V 20 µA
only
VCC = MAX, VI = 0.5V –20 µA
VCC = MAX, VI = 2.7V 70 µA
VCC = MAX, VI = 0.5V –70 µA
=
CC
CCH
VCC = MAX
CCL
CCZ
CCH
VCC = MAX
CCL
CCZ
±10%V
±5%V
±10%V
±5%V
±10%V
±5%V
OH
OH
OL
= –
= –
=
IOL = 48mA ±10%V
IOL = 64mA ±5%V
IK
OEBA=OEAB=4.5V;
A0–A7=GND
OEBA=OEAB=4.5V;
A0–A7=4.5V
OEAB=GND;
OEBA=A0–A7=4.5V
OEBA=OEAB=4.5V;
A0–A7=4.5V
OEBA=OEAB=4.5V;
A0–A7=GND
OEAB=GND;
OEBA=A0–A7=4.5V
CC
CC
CC
CC
2.4 V
CC
2.7 3.3 V
2.0 V
CC
2.0 V
CC
0.35 0.50 V
0.35 0.50 V
CC
0.38 0.55 V
0.42 0.55 V
–0.73 –1.2 V
–60 –150 mA
–100 –225 mA
70 92 mA
84 110 mA
84 110 mA
110 140 mA
110 140 mA
99 130 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 V
3. Not more than one output should be shorted at a time. For testing I
= 5V, T
CC
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
amb
= 25°C.
, the use of high-speed test apparatus and/or sample-and-hold
OS
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I
tests should be performed last.
OS
1990 Apr 6
6
Page 7
Philips Semiconductors Product specification
74F620/74F623Transceivers
AC ELECTRICAL CHARACTERISTICS – 74F620
LIMITS
SYMBOL PARAMETER
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
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
TEST
CONDITION
Waveform 2
Waveform 2
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 3
Waveform 4
VCC = +5V
T
= +25°C
amb
C
= 50pF, RL = 500Ω
L
MIN TYP MAX MIN MAX
2.5
1.0
2.5
1.0
3.0
4.0
2.5
2.0
4.5
4.5
3.0
4.0
4.5
2.5
4.5
2.5
7.5
7.5
4.5
4.5
7.5
7.5
6.5
6.5
6.5
4.5
6.5
4.5
10.5
10.5
7.5
7.0
10.5
10.0
9.5
9.5
VCC = +5V ± 10%
T
= 0°C to +70°C
amb
C
= 50pF, RL = 500Ω
L
2.0
1.0
2.0
1.0
2.5
3.5
2.0
1.5
4.0
4.0
2.5
3.5
7.5
5.0
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
ns
AC ELECTRICAL CHARACTERISTICS – 74F623
SYMBOL PARAMETER
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
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
CONDITION
Waveform 1
Waveform 1
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 3
Waveform 4
TEST
LIMITS
VCC = +5V
T
= +25°C
amb
C
= 50pF, RL = 500Ω
L
VCC = +5V ± 10%
T
= 0°C to +70°C
amb
C
= 50pF, RL = 500Ω
L
MIN TYP MAX MIN MAX
2.0
3.0
2.0
2.5
5.0
5.0
2.5
2.5
5.0
4.5
3.0
4.0
4.0
5.0
4.0
4.5
8.5
7.5
4.5
4.5
8.0
7.0
6.0
7.0
5.5
7.0
5.5
6.5
10.5
9.5
6.5
6.5
10.0
9.0
8.5
9.0
2.0
2.5
2.0
2.5
5.0
5.0
2.5
2.5
5.0
4.5
3.0
4.0
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
1990 Apr 6
7
Page 8
Philips Semiconductors Product specification
74F620/74F623Transceivers
AC WAVEFORMS
For all waveforms, VM = 1.5V.
An or Bn
Bn or An
V
M
t
PHL
V
M
t
PLH
V
M
V
M
SF01131
Waveform 1. For Inverting Outputs
OEBA
OEAB
An or Bn
V
t
PZH
M
V
V
M
t
PHZ
M
VOH -0.3V
SF01133
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
TEST CIRCUIT AND WAVEFORMS
V
CC
R
V
PULSE
GENERATOR
IN
R
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST SWITCH
t
t
PLZ
PZL
closed
closed
All other open
T
D.U.T.
V
OUT
L
R
C
L
L
7.0V
0V
NEGATIVE
PULSE
POSITIVE
PULSE
An or Bn
Bn or An
V
M
t
PLH
V
M
t
PHL
V
M
V
M
SF01132
Waveform 2. For Non-Inverting Outputs
OEBA
OEAB
An or Bn
V
t
PZL
M
V
V
M
t
PLZ
M
VOL +0.3V
SF01134
Waveform 4. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
90%
10%
t
w
V
M
10%
)
V
90%
M
t
THL (tf
t
TLH (tr
)
t
t
t
w
TLH (tr
THL (tf
10%
)
)
90%
V
M
V
M
90%
10%
AMP (V)
0V
AMP (V)
0V
Input Pulse Definition
DEFINITIONS:
R
= Load resistor;
L
C
= Load capacitance includes jig and probe capacitance;
L
R
= Termination resistance should be equal to Z
T
1990 Apr 6
see AC electrical characteristics for value.
see AC electrical characteristics for value.
pulse generators.
OUT
of
family
74F
8
INPUT PULSE REQUIREMENTS
V
amplitude
3.0V
M
1.5V
rep. rate
1MHz 500ns
t
w
t
TLH
t
THL
2.5ns 2.5ns
SF00777
Page 9
Philips Semiconductors Product specification
74F620, 74F623Transceivers
DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1
1990 Apr 06
9
Page 10
Philips Semiconductors Product specification
74F620, 74F623Transceivers
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
1990 Apr 06
10
Page 11
Philips Semiconductors Product specification
74F620, 74F623Transceivers
NOTES
1990 Apr 06
11
Page 12
Philips Semiconductors Product specification
74F620, 74F623Transceivers
Data sheet status
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
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.
[1]
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves 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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 10-98
Document order number: 9397-750-05146
yyyy mmm dd
12
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