PHILIPS 74LVT2245DB

INTEGRATED CIRCUITS
74LVT2245
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
Product specification
Supersedes data of 1996 Mar 11
IC23 Data Handbook
1998 Feb 19
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
FEATURES
DESCRIPTION
• 30Ω output termination resistors
• Octal bidirectional bus interface
• 3-State buffers
• Output capability: +12mA/-12mA
• TTL input and output switching levels
• Input and output interface capability to systems at 5V supply
• Bus-hold data inputs eliminate the need for external pull-up
The LVT2245 is a high-performance BiCMOS product designed for
VCC operation at 3.3V.
This device is an octal transceiver featuring non-inverting 3-State
bus compatible outputs in both send and receive directions. The
control function implementation minimizes external timing
requirements. The device features an Output Enable (OE) input for
easy cascading and a Direction (DIR) input for direction control.
The 74LVT2245 is designed with 30Ω series resistance in both the
High and Low states of the output. This design reduces line noise in
applications such as memory address drivers, clock drivers, and bus
transceivers/transmitters.
resistors to hold unused inputs
• Live insertion/extraction permitted
• Power-up 3-State
• No bus current loading when output is tied to 5V bus
• Latch-up protection exceeds 500mA per JEDEC Std 17
• ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
QUICK REFERENCE DATA
SYMBOL
CONDITIONS
Tamb = 25°C; GND = 0V
PARAMETER
TYPICAL
UNIT
3.2
3.1
ns
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
CL = 50pF;
VCC = 3.3V
CIN
Input capacitance
DIR, OE
VI = 0V or 3.0V
4
pF
CI/O
I/O pin capacitance
Outputs disabled; VI/O = 0V or 3.0V
10
pF
ICCZ
Total supply current
Outputs disabled; VCC = 3.6V
0.13
mA
ORDERING INFORMATION
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin Plastic SO
PACKAGES
–40°C to +85°C
74LVT2245 D
74LVT2245 D
SOT163-1
20-Pin Plastic SSOP
–40°C to +85°C
74LVT2245 DB
74LVT2245 DB
SOT339-1
20-Pin Plastic TSSOP
–40°C to +85°C
74LVT2245 PW
7LVT2245PW DH
SOT360-1
PIN CONFIGURATION
LOGIC SYMBOL
1
DIR
DIR
1
20
VCC
A0
2
19
OE
A1
3
18
B0
A2
4
17
B1
A3
5
16
B2
A0
A4
6
15
B3
A5
7
14
B4
A1
A2
A3
A6
A7
8
9
GND 10
13
19
2
B6
11
B7
A4
A5
A7
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
4
5
6
7
SV00014
A6
18
3
B5
12
OE
8
9
11 B7
SV00016
1998 Feb 19
2
853-1828 18985
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
LOGIC SYMBOL (IEEE/IEC)
FUNCTION TABLE
INPUTS
19
OEn
G3
3 EN1 (BA)
1
3 EN2 (AB)
H
L
X
Z
18
2
1
2
3
17
4
16
5
15
6
14
7
13
8
12
9
11
=
=
=
=
INPUTS/OUTPUTS
DIR
An
L
L
An= Bn
Inputs
L
H
Inputs
Bn =An
Z
Z
H
X
High voltage level
Low voltage level
Don’t care
High impedance “Off ” state
Bn
SCHEMATIC OF EACH OUTPUT
VCC
VCC
25Ω
SV00015
25Ω
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
DIR
2, 3, 4, 5,
6, 7, 8, 9
A0 – A7
Data inputs/outputs (A side)
18, 17, 16, 15,
14, 13, 12, 11
B0 – B7
Data inputs/outputs (B side)
19
OE
10
GND
Ground (0V)
20
VCC
Positive supply voltage
Direction control input
SV00102
Output enable input (active–Low)
ABSOLUTE MAXIMUM RATINGS1,2
PARAMETER
SYMBOL
VCC
CONDITIONS
RATING
UNIT
–0.5 to +4.6
V
–50
mA
–0.5 to +7.0
V
VO < 0
–50
mA
Output in Off or High state
–0.5 to +7.0
V
Output in Low state
128
Output in High state
–64
DC supply voltage
IIK
DC input diode current
VI
DC input voltage3
IOK
DC output diode current
voltage3
VOUT
DC output
IOUT
DC output current
Tstg
Storage temperature range
VI < 0
mA
–65 to +150
°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 negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
1998 Feb 19
3
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
RECOMMENDED OPERATING CONDITIONS
SYMBOL
VCC
LIMITS
PARAMETER
DC supply voltage
UNIT
MIN
MAX
2.7
3.6
V
0
5.5
V
VI
Input voltage
VIH
High-level input voltage
VIL
Input voltage
0.8
V
IOH
High-level output current
–12
mA
IOL
Low-level output current
12
mA
10
ns/V
+85
°C
2.0
∆t/∆v
Input transition rise or fall rate; Outputs enabled
Tamb
Operating free-air temperature range
V
–40
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = –40°C to +85°C
MIN
VIK
Input clamp voltage
VCC = 2.7V; IIK = –18mA
VOH
High-level output voltage
VCC = 3.0V; IOH = –12mA
VOL
Low-level output voltage
VCC = 3.0V; IOL = 12mA
2.0
Control pins
ins
VCC = 3.6V; VI = VCC or GND
Input leakage current
VCC = 3.6V; VI = 5.5V
I/O Data pins4
VCC = 3.6V; VI = VCC
IOFF
IHOLD
IEX
IPU/PD
Output off current
Bus Hold current A inputs6
–1.2
2.2
V
1
10
±0.1
±1
1
20
0.1
1
VCC = 3.6V; VI = 0
–1
-5
VCC = 0V; VI or VO = 0 to 4.5V
1
±100
VCC = 3V; VI = 0.8V
75
150
VCC = 3V; VI = 2.0V
–75
–150
VCC = 0V to 3.6V; VCC = 3.6V
±500
V
V
µA
µA
µA
VO = 5.5V; VCC = 3.0V
60
125
µA
Power up/down 3-State output
current3
VCC ≤ 1.2V; VO = 0.5V to VCC; VI = GND or VCC;
OE/OE = Don’t care
15
±100
µA
VCC = 3.6V; Outputs High, VI = GND or VCC, IO = 0
0.13
0.19
VCC = 3.6V; Outputs Low, VI = GND or VCC, IO = 0
3
12
VCC = 3.6V; Outputs Disabled; VI = GND or VCC, IO = 05
0.13
0.19
VCC = 3V to 3.6V; One input at VCC-0.6V,
Other inputs at VCC or GND
0.1
0.2
Quiescent supply current
ICCZ
∆ICC
–0.9
UNIT
Current into an ouptut in the
High state when VO > VCC
ICCH
ICCL
MAX
0.8
VCC = 0 or 3.6V; VI = 5.5V
II
TYP1
Additional supply current per
input pin3
mA
mA
NOTES:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
2. This is the increase in supply current for each input at the specified voltage level other than VCC or GND
3. This parameter is valid for any VCC between 0V and 1.2V with a transition time of up to 10msec. From VCC = 1.2V to VCC = 3.3V ± 0.3V a
transition time of 100µsec is permitted. This parameter is valid for Tamb = +25°C only.
4. Unused pins at VCC or GND.
5. ICCZ is measured with outputs pulled up to VCC or down to GND
6. This is the bus hold overdrive current required to force the input to the opposite logic state.
1998 Feb 19
4
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
VCC = 3.3V +0.3V
VCC = 2.7V
MIN
TYP
MAX
MAX
UNIT
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
1
1.0
1.0
3.2
3.1
4.6
4.5
5.3
4.9
ns
tPZH
tPZL
Output enable time
to High and Low level
2
1.1
1.5
4.5
4.3
7.0
6.5
9.1
7.6
ns
tPHZ
tPLZ
Output disable time
from High and Low Level
2
2.2
2.0
3.7
3.6
5.2
5.0
5.6
5.0
ns
NOTE:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
AC WAVEFORMS
VM = 1.5V, VIN = GND to 2.7V
2.7V
OE INPUT
An or Bn
INPUT
1.5V
1.5V
0V
VM
VM
tPLZ
tPZL
tPHL
tPLH
1.5V
An or Bn
OUTPUT
Bn or An
OUTPUT
VM
VM
3.0V
VOL + 0.3V
tPHZ
tPZH
VOL
VOH
Bn or An
OUTPUT
VOH – 0.3V
0V
SA00192
SV00106
Waveform 1. Input (An or Bn) to Output (Bn or An) Propagation
Delays
1998 Feb 19
1.5V
Waveform 2. 3-State Output Enable and Disable Times
5
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
TEST CIRCUIT AND WAVEFORMS
6.0V
VCC
Open
VIN
VOUT
PULSE
GENERATOR
RL
GND
tW
90%
NEGATIVE
PULSE
90%
VM
VM
10%
10%
D.U.T.
RT
0V
CL
tTHL (tF)
RL
tTLH (tR)
tTLH (tR)
tTHL (tF)
90%
Test Circuit for 3-State Outputs
POSITIVE
PULSE
AMP (V)
90%
VM
VM
10%
10%
tW
SWITCH POSITION
TEST
SWITCH
tPLH/tPHL
Open
tPLZ/tPZL
6V
tPHZ/tPZH
GND
AMP (V)
0V
VM = 1.5V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
DEFINITIONS
FAMILY
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
74LVT
Amplitude
Rep. Rate
2.7V
10MHz
tW
tR
tF
500ns 2.5ns 2.5ns
RT = Termination resistance should be equal to ZOUT of
pulse generators.
SV00092
1998 Feb 19
6
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
SO20: plastic small outline package; 20 leads; body width 7.5 mm
1998 Feb 19
7
SOT163-1
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
1998 Feb 19
8
SOT339-1
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
74LVT2245
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
1998 Feb 19
9
SOT360-1
Philips Semiconductors
Product specification
3.3V Octal transceiver with 30Ω termination resistors
(3-State)
74LVT2245
Data sheet status
Data sheet
status
Product
status
Definition [1]
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
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.
Product
specification
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.
[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.
 Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
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Date of release: 05-96
9397-750-03533