INTEGRATED CIRCUITS
74ABT620
Octal transceiver with dual enable,
inverting (3-State)
Product specification
IC23 Data Handbook
1993 Jun 21
Philips
Semiconductors
Philips Semiconductors
Product specification
Octal transceiver with dual enable, inverting
(3-State)
74ABT620
FEATURES
•
Octal bidirectional bus interface
•
3-State buffers
•
Power-up 3-State
•
Live insertion/extraction permitted
•
Output capability: +64mA/–32mA
•
Latch-up protection exceeds 500mA per Jedec Std 17
•
ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
DESCRIPTION
The 74ABT620 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT620 device is an octal transceiver featuring inverting
3-State bus compatible outputs in both send and receive directions.
The 74ABT620 is designed for asynchronous two-way
communication between data buses. The control function
implementation allows for maximum flexibility in timing. This 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.
QUICK REFERENCE DATA
SYMBOL
t
PLH
t
PHL
C
IN
C
I/O
I
CCZ
PARAMETER
Propagation delay
An to Bn or Bn to An
Input capacitance
OEAB, OEBA
I/O capacitance
Total supply current
CONDITIONS
T
amb
= 25°C; GND = 0V
C
L
= 50pF; V
CC
= 5V
V
I
= 0V or V
CC
Outputs disabled; V
O
= 0V or V
CC
Outputs disabled; V
CC
= 5.5V
TYPICAL
3.1
4
7
50
UNIT
ns
pF
pF
µA
ORDERING INFORMATION
PACKAGES
20-Pin Plastic DIP
20-Pin plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74ABT620 N
74ABT620 D
74ABT620 DB
74ABT620 PW
NORTH AMERICA
74ABT620 N
74ABT620 D
74ABT620 DB
74ABT620PW DH
DWG NUMBER
SOT146-1
SOT163-1
SOT339-1
SOT360-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN NUMBER
1
SYMBOL
OEAB
A0 – A7
B0 – B7
OEBA
GND
V
CC
NAME AND FUNCTION
Output enable input, A side to B side
(active-High)
Data inputs/outputs (A side)
Data inputs/outputs (B side)
Output enable input, B side to A side
(active-Low)
Ground (0V)
Positive supply voltage
OEAB
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
V
CC
OEBA
B0
B1
B2
B3
B4
B5
B6
B7
2, 3, 4, 5,
6, 7, 8, 9
18, 17, 16, 15,
14, 13, 12, 11
19
10
20
GND 10
SA00189
1993 Jun 21
2
853–1611 10081
Philips Semiconductors
Product specification
Octal transceiver with dual enable, inverting
(3-State)
74ABT620
LOGIC SYMBOL
1
OEAB
2
A0
18
3
A1
17
4
A2
16
5
A3
15
6
A4
14
7
A5
13
8
A6
12
9
A7
11
B7
B6
B5
B4
B3
B2
B1
B0
19
OEBA
LOGIC SYMBOL (IEEE/IEC)
1
19
EN1
EN1
2
1
2
18
3
4
5
6
7
8
9
17
16
15
14
13
12
11
SA00190
SA00191
FUNCTION TABLE
INPUTS
OEBA
L
H
H
L
OEAB
L
H
L
H
Inputs
H = High voltage level
L = Low voltage level
Z = High impedance ”off” state
INPUTS/OUTPUTS
An
Bn
Inputs
Z
Bn
or
An
Bn
Inputs
An
Z
Inputs
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
V
CC
I
IK
V
I
I
OK
V
OUT
I
OUT
T
stg
PARAMETER
DC supply voltage
DC input diode current
DC input voltage
3
DC output diode current
DC output voltage
3
DC output current
Storage temperature range
V
O
< 0
output in Off or High state
output in Low state
V
I
< 0
CONDITIONS
RATING
–0.5 to +7.0
–18
–1.2 to +7.0
–50
–0.5 to +5.5
128
–65 to 150
UNIT
V
mA
V
mA
V
mA
°C
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1993 Jun 21
3
Philips Semiconductors
Product specification
Octal transceiver with dual enable, inverting
(3-State)
74ABT620
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
Min
V
CC
V
I
V
IH
V
IL
I
OH
I
OL
∆t/∆v
T
amb
DC supply voltage
Input voltage
High-level input voltage
Low-level Input voltage
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature range
0
–40
4.5
0
2.0
0.8
–32
64
5
+85
LIMITS
Max
5.5
V
CC
V
V
V
V
mA
mA
ns/V
°C
UNIT
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25°C
Min
V
IK
Input clamp voltage
V
CC
= 4.5V; I
IK
= –18mA
V
CC
= 4.5V; I
OH
= –3mA; V
I
= V
IL
or V
IH
V
OH
High-level output voltage
V
CC
= 5.0V; I
OH
= –3mA; V
I
= V
IL
or V
IH
V
CC
= 4.5V; I
OH
= –32mA; V
I
= V
IL
or V
IH
V
OL
I
I
Low-level output voltage
Input leakage
current
I
OFF
I
PU/
I
PD
I
IH
+ I
OZH
I
IL
+ I
OZL
I
CEX
I
O
I
CCH
I
CCL
I
CCZ
∆I
CC
Additional supply current per
input pin
2
Quiescent supply current
Control pins
Data pins
V
CC
= 4.5V; I
OL
= 64mA; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
I
= GND or 5.5V
V
CC
= 5.5V; V
I
= GND or 5.5V
V
CC
= 0.0V; V
O
or V
I
≤
4.5V
V
CC
= 2.1V; V
O
= 0.5V; V
I
= GND or V
CC
;
V
OE
and V
OE
= Don’t care
V
CC
= 5.5V; V
O
= 2.7V; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
O
= 0.5V; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
O
= 5.5V; V
I
= GND or V
CC
V
CC
= 5.5V; V
O
= 2.5V
V
CC
= 5.5V; Outputs High, V
I
= GND or V
CC
V
CC
= 5.5V; Outputs Low, V
I
= GND or V
CC
V
CC
= 5.5V; Outputs 3-State;
V
I
= GND or V
CC
V
CC
= 5.5V; one input at 3.4V,
other inputs at V
CC
or GND
–50
2.5
3.0
2.0
Typ
–0.9
2.9
3.4
2.4
0.42
±0.01
±5
±5.0
±5.0
5.0
–5.0
5.0
–100
50
24
50
0.05
0.55
±1.0
±100
±100
±50
50
–50
50
–180
250
30
250
1.5
–50
Max
–1.2
2.5
3.0
2.0
0.55
±1.0
±100
±100
±50
50
–50
50
–180
250
30
250
1.5
T
amb
= –40°C
to +85°C
Min
Max
–1.2
V
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
mA
µA
mA
µA
mA
UNIT
Power-off leakage current
Power-up/down 3-State
output current
3
3-State output High current
3-State output Low current
Output High leakage current
Output current
1
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. This parameter is valid for any V
CC
between 0V and 2.1V, with a transition time of up to 10msec. From V
CC
= 2.1V to V
CC
= 5V
±
10% a
transition time of up to 100µsec is permitted.
1993 Jun 21
4
Philips Semiconductors
Product specification
Octal transceiver with dual enable, inverting
(3-State)
74ABT620
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500Ω
LIMITS
SYMBOL
PARAMETER
WAVEFORM
Min
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 or Bn to An
Output enable time
OEBA to An
Output disable time
OEBA to An
Output enable time
OEAB to Bn
Output disable time
OEAB to Bn
1
2
2
2
2
1.0
1.0
1.3
1.0
2.0
1.4
1.6
2.0
1.2
1.1
T
amb
= +25°C
V
CC
= +5.0V
Typ
2.9
3.1
3.2
2.7
5.0
4.0
4.6
4.2
3.9
2.9
Max
4.1
4.3
4.6
6.1
6.3
5.4
6.2
5.9
5.6
4.7
T
amb
= –40°C to +85°C
V
CC
= +5.0V
±0.5V
Min
1.0
1.0
1.3
1.0
2.0
1.4
1.6
2.0
1.2
1.1
Max
4.8
4.8
5.5
7.1
7.0
5.8
6.8
6.4
6.5
5.6
ns
ns
ns
ns
ns
UNIT
AC WAVEFORMS
V
M
= 1.5V, V
IN
= GND to 3.0V
OEBA
INPUT
V
M
An or Bn
INPUT
OEAB
INPUT
V
M
V
M
An or Bn
OUTPUT
t
PZL
t
PLZ
3.5V
V
M
t
PHL
t
PLH
V
M
t
PHZ
V
OL
+ 0.3V
V
OL
V
OH
V
OH
– 0.3V
Bn or An
OUTPUT
t
PZH
V
M
V
M
An or Bn
OUTPUT
V
M
0V
SA00192
SA00193
Waveform 1. Waveforms Showing the Input to Output
Propagation Delays
Waveform 2. Waveforms Showing the 3-State Output Enable
and Disable Times
1993 Jun 21
5
