Philips 74LVT2245PW, 74LVT2245DB, 74LVT2245D Datasheet
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)
FEA TURES
•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
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 PARAMETER
t
PLH
t
PHL
C
C
I
CCZ
IN
I/O
Propagation delay
An to Bn or Bn to An
Input capacitance
DIR, OE
I/O pin capacitance Outputs disabled; V
Total supply current Outputs disabled; VCC = 3.6V 0.13 mA
74L VT2245
DESCRIPTION
The LVT2245 is a high-performance BiCMOS product designed for
V
operation at 3.3V .
CC
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
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.
T
CL = 50pF;
VCC = 3.3V
CONDITIONS
= 25°C; GND = 0V
amb
TYPICAL UNIT
3.2
3.1
VI = 0V or 3.0V 4 pF
= 0V or 3.0V 10 pF
I/O
) input for
ns
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
20-Pin Plastic SO –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
1
DIR
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
SV00014
V
OE
B0
B1
B2
B3
B4
B5
B6
B7
CC
LOGIC SYMBOL
DIR
A0
A1
A2
A3
A4
A5
A6
A7
1
19
OE
2
18
3
4
5
6
7
8
9
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
SV00016
1998 Feb 19 853-1828 18985
2
Philips Semiconductors Product specification
I
DC output current
mA
3.3V Octal transceiver with 30Ω
termination resistors (3-State)
LOGIC SYMBOL (IEEE/IEC)
19
1
2
3
4
5
6
7
8
9
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
1 DIR Direction control input
2, 3, 4, 5,
6, 7, 8, 9
18, 17, 16, 15,
14, 13, 12, 11
19 OE Output enable input (active–Low)
10 GND Ground (0V)
20 V
G3
3 EN1 (BA)
3 EN2 (AB)
1
2
18
17
16
15
14
13
12
11
SV00015
A0 – A7 Data inputs/outputs (A side)
B0 – B7 Data inputs/outputs (B side)
CC
Positive supply voltage
74LVT2245
FUNCTION TABLE
INPUTS INPUTS/OUTPUTS
OEn DIR An Bn
L L An= Bn Inputs
L H Inputs Bn =An
H X Z Z
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “Off” state
SCHEMATIC OF EACH OUTPUT
V
CC
V
CC
25Ω
25Ω
SV00102
ABSOLUTE MAXIMUM RA TINGS
SYMBOL
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
3. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
1998 Feb 19
1,2
PARAMETER CONDITIONS RATING UNIT
V
V
I
CC
I
IK
V
OK
OUT
DC supply voltage –0.5 to +4.6 V
DC input diode current VI < 0 –50 mA
I
DC input voltage
3
–0.5 to +7.0 V
DC output diode current VO < 0 –50 mA
DC output voltage
3
Output in Off or High state –0.5 to +7.0 V
Output in Low state 128
OUT
T
stg
p
Output in High state –64
Storage temperature range –65 to +150 °C
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 .
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3
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