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N74F1245D
Datasheet (Philips)
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Datasheet N74F1245D Datasheet (Philips)

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Page 1
INTEGRATED CIRCUITS
74F1245
Octal transceiver (3-State)
Product specification 1995 Mar 01 IC15 Data Handbook
Philips Semiconductors
Page 2
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)

FEA TURES

•Same function and pinout as 74F245
•High impedance NPN base inputs for reduced loading (70µA in
Low and High states)
•Useful in applications where light loading bus loading or direct
interface with output of a MOS microprocessor is desired
•Octal bidirectional bus interface

DESCRIPTION

The 74F1245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The B port outputs are capable of sinking 64mA and sourcing up to 15mA, producing very good capacitive drive characteristics. The device features an Output Enable (OE Transmit/Receive (T/R
) input for direction control. The 3-State outputs, B0–B7, have been designed to prevent output bus loading if the power is removed from the device.
) input for easy cascading and
•Glitch free during 3-State power up and power down
•3-State buffer outputs sink 64mA and source 15mA
TYPICAL
TYPE
PROPAGATION
DELA Y
74F1245 5.0ns 115mA

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW
A0–A7, B0–B7 A and B port inputs 3.5/0.1 17 70µA/70µA
OE Output Enable input (active Low) 2.0/0.033 40µA/20µA
T/R Transmit/Receive input 2.0/0.033 40µA/20µA A0–A7 A port outputs 150/40 3.0mA/24mA B0–B7 B port 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.
TYPICAL SUPPL Y
CURRENT (TOTAL)

ORDERING INFORMATION

COMMERCIAL RANGE
DESCRIPTION
20-Pin Plastic DIP N74F1245N SOT146-1
20-Pin Plastic SOL N74F1245D SOT163-1
VCC = 5V ±10%,
T
= 0°C to +70°C
amb
DRAWING
NUMBER

PIN CONFIGURATION

1
T/R
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
10 11
GND
20 19 18 17 16 15 14 13 12
SF00198
V OE
B0 B1 B2 B3 B4 B5 B6
B7

LOGIC SYMBOL

CC
19
1
V
= Pin 20
CC
GND = Pin 10
234
A0 A1 A2 A3 A4 A5
OE T/R
B2 B3 B4 B5
B1
B0
16 15 14 13
17
18
567
89
A6 A7
B6 B7
12 11
SF00199
1995 Mar 01 853-0885 14921
Page 3
Philips Semiconductors Product specification
I
Current applied to output in Low output state
74F1245Octal transceiver (3-State)

LOGIC SYMBOL (IEEE/IEC)

19
1
2 3 4 5 6 7 8 9
G3 3EN1 (BA) 3EN2 (AB)
∇ 1

LOGIC DIAGRAM

19
OE
1
T/R
VCC = Pin 20 GND = Pin 10

FUNCTION TABLE

INPUTS INPUTS/OUTPUTS
OE T/R An Bn
L L A = B INPUTS L H INPUTS B = A
2 ∇
18 17 16 15 14 13 12 11
SF00649
A0 A1 A2 A3 A4 A5 A6 A7
23456789
18
B0
17
B1
16
B2
H X Z Z
H = High voltage level L = Low voltage level X = Don’t care Z = High impedance “off” state
15
B3
14
B4
13
B5
12
B6
B7
SF00201
11

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
CC
V
IN
I
IN
V
OUT
OUT
T
amb
T
stg
1995 Mar 01
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 +5.5 V
pp
Operating free-air temperature range 0 to +70 °C Storage temperature range –65 to +150 °C
PARAMETER RATING UNIT
A0–A7 48 mA B0–B7 128 mA
Page 4
Philips Semiconductors Product specification
SYMBOL
PARAMETER
UNIT
IOHHigh-level output current
IOLLow-level output current
NO TAG
A0–A7, B0–B7
I
3mA
VOHHigh-level out ut voltage
V
MAX
B0–B7
I
15mA
A0–A7
I
24mA
VOLLow-level out ut voltage
V
MAX
B0–B7
I
I
V
MAX
74F1245Octal transceiver (3-State)

RECOMMENDED OPERATING CONDITIONS

LIMITS
MIN NOM MAX
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
A0–A7 –3 mA B0–B7 –15 mA A0–A7 24 mA B0–B7 64 mA
Operating free-air temperature range 0 70 °C

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
SYMBOL PARAMETER TEST CONDITIONS
= –
V
=
IL
= MIN
IH
VCC = MIN,
VCC = MIN,
V
=
IL
= MIN
IH
OH
,
= –
OH
=
OL
,
IOL = 48mA ±10% V IOL = 64mA ±5% V
V
IK
I
I
IH
I
IL
IIH+I
IIL+I
OS
I
CC
Input clamp voltage VCC = MIN, II = I Input current at maximum
input voltage
OE, T/R VCC = 0.0V, VI = 7.0V 100 µA A0–A7, B0–B7 VCC = 0.0V, VI = 5.5V 100 µA
IK
High-level input current OE, T/R only VCC = MAX, VI = 2.7V 40 µA Low-level input current OE, T/R only VCC = MAX, VI = 0.5V –20 µA Off-state output current
OZH
High-level voltage applied Off-state output current
OZL
Low-level voltage applied Short-circuit output
NO TAG
current
Supply current (total)
A0–A7 B0–B7 I
CCH
I
CCL
I
CCZ
VCC = MAX, VO = 2.7V 70 µA
VCC = MAX, VO = 0.5V –70 µA
=
CC
VCC = MAX
±10% V
±5% V
±10% V
±5% V
±10% V
±5% V
MIN
CC
CC
CC
CC
CC
CC
CC
CC
–60 –150 mA
–100 –225 mA
TYP
NO TAG
MAX
2.4 V
2.7 3.3 V
2.0 V
2.0 V
0.35 0.50 V
0.35 0.50 V
0.30 0.55 V
0.42 0.55 V
–0.73 –1.2 V
120 155 mA 116 150 mA 110 165 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
CC
= 5V, T
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
UNIT
1995 Mar 01
Page 5
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)

AC ELECTRICAL CHARACTERISTICS

LIMITS
SYMBOL PARAMETER
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay An to Bn, Bn to An
Output Enable time OE to An or Bn
Output Disable time OE to An or Bn

AC WAVEFORMS

For all waveforms, VM = 1.5V.
TEST
CONDITION
Waveform
NO TAG
Waveform
NO TAG
Waveform
NO TAG
Waveform
NO TAG
Waveform
NO TAG
VCC = +5.0V
T
= +25°C
amb
C
= 50pF, RL = 500Ω
L
MIN TYP MAX MIN MAX
2.0
2.5
3.0
4.0
2.0
4.0
4.0
5.0
6.0
7.5
5.0
7.0
6.5
7.5
8.0
10.0
8.0
10.0
VCC = +5.0V ± 10%
T
= 0°C to +70°C
amb
C
= 50pF, RL = 500Ω
L
1.5
2.0
2.5
3.5
11.0
1.5
4.0
11.0
7.0
8.0
9.0
9.0
UNIT
ns
ns
ns
An, Bn
Bn, An
V
M
t
PLH
V
M
t
PHL
V
M
V
M
SF00202
Waveform 1. Propagation Delay for Non-Inverting Output
OE
V
M
t
PHZ
V
M
VOH–0.3V
0V
SF00203
An, Bn
V
M
t
PZH
Waveform 2. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
OE
V
M
t
PLZ
V
M
VOL+0.3V
SF00204
An, Bn
V
M
t
PZL
Waveform 3. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
1995 Mar 01
Page 6
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)

TEST CIRCUIT AND WAVEFORMS

V
CC
PULSE
GENERATOR
V
IN
R
T
D.U.T.
V
OUT
Test Circuit for Open Collector Outputs
SWITCH POSITION
TEST SWITCH
t t
PLZ PZL
closed closed
All other open
7.0V
R
L
R
C
L
L
NEGATIVE PULSE
POSITIVE PULSE
90%
10%
V
M
10%
t
THL (tf
t
TLH (tr
90%
V
M
Input Pulse Definition
t
w
V
M
10%
)
)
t
w
t
TLH (tr
t
THL (tf
)
)
90%
V
M
90%
10%
AMP (V)
0V
AMP (V)
0V
DEFINITIONS:
R
= Load resistor;
L
see AC electrical characteristics for value.
= Load capacitance includes jig and probe capacitance;
C
L
see AC electrical characteristics for value.
R
= Termination resistance should be equal to Z
T
pulse generators.
OUT
of
family
74F
INPUT PULSE REQUIREMENTS
V
amplitude
3.0V
M
1.5V
rep. rate
1MHz 500ns
t
w
t
TLHtTHL
2.5ns 2.5ns
SF00128
1995 Mar 01
Page 7
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)

DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1

1995 Mar 01
Page 8
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)

SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

1995 Mar 01
Page 9
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)
NOTES
1995 Mar 01
Page 10
Philips Semiconductors Product specification
74F1245Octal transceiver (3-State)

DEFINITIONS

Data Sheet Identification Product Status Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
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 APPLICA TIONS 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
This data sheet contains the design target or goal specifications for product development. Specifications 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 changes 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.
Philips Semiconductors and Philips Electronics North America Corporation
register eligible circuits under the Semiconductor Chip Protection Act.
Copyright Philips Electronics North America Corporation 1995
All rights reserved. Printed in U.S.A.
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