INTEGRATED CIRCUITS
74LVT162245B
3.3V LVT 16-bit transceiver
with 30Ω termination resistors (3-State)
Product specification
Supersedes data of 1995 Aug 22
IC23 Data Handbook
1998 Feb 19
Philips
Semiconductors
Philips Semiconductors
Product specification
3.3V 16-bit transceiver with 30Ω
termination resistors (3-State)
74LVT162245B
FEATURES
•
16-bit 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
•
•
Outputs include series resistance of 30Ω making external
•
•
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
Same part as 74LVT16245B-1
termination resistors unnecessary
Power-up 3-State
resistors to hold unused inputs
Live insertion/extraction permitted
DESCRIPTION
The 74LVT162245B is a high-performance BiCMOS product
designed for V
CC
operation at 3.3V.
This device is a 16-bit 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 (nOE) input for
easy cascading and a Direction (DIR) input for direction control.
The 74LVT162245B 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.
The 74LVT162245B is the same as the 74LVT16245B-1. The part
number has been changed to reflect industry standards.
QUICK REFERENCE DATA
SYMBOL
t
PLH
t
PHL
C
IN
C
I/O
I
CCZ
PARAMETER
Propagation delay
nAx to nBx or nBx to nAx
Input capacitance DIR, OE
I/O pin capacitance
Total supply current
C
L
= 50pF;
V
CC
= 3.3V
V
I
= 0V or 3.0V
V
I/O
= 0V or 3.0V
Outputs disabled; V
CC
= 3.6V
CONDITIONS
T
amb
= 25°C
TYPICAL
2.5
3
9
70
UNIT
ns
pF
pF
µA
ORDERING INFORMATION
PACKAGES
48-Pin Plastic SSOP Type III
48-Pin Plastic TSSOP Type II
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74LVT162245B DL
74LVT162245B DGG
NORTH AMERICA
VT162245B DL
VT162245B DGG
DWG NUMBER
SOT370-1
SOT362-1
PIN DESCRIPTION
PIN NUMBER
1, 24
47, 46, 44, 43,
41, 40, 38, 37,
36, 35, 33, 32,
30, 29, 27, 26
2, 3, 5, 6, 8, 9,
11, 12, 13, 14,
16, 17, 19, 20,
22, 23
25, 48
4, 10, 15, 21, 28,
34, 39, 45
7, 18, 31, 42
SYMBOL
nDIR
NAME AND FUNCTION
Direction control input
LOGIC SYMBOL
1DIR
1
48
1A0
47
2
2DIR
1OE
1B0
2A0
36
24
25
13
2OE
2B0
nA0 – nA7
Data inputs/outputs (A side)
1A1
46
3
1B1
2A1
35
14
2B1
nB0 – nB7
Data inputs/outputs (B side)
1A2
44
5
1B2
2A2
33
16
2B2
nOE
GND
V
CC
Output enable input
(active-Low)
Ground (0V)
Positive supply voltage
1A3
43
6
1B3
2A3
32
17
2B3
1A4
41
8
1B4
2A4
30
19
2B4
1A5
40
9
1B5
2A5
29
20
2B5
1A6
38
11
1B6
2A6
27
22
2B6
1A7
37
12
1B7
2A7
26
23
2B7
SA00021
1998 Feb 19
2
853-1766 18989
Philips Semiconductors
Product specification
3.3V 16-bit transceiver with 30Ω
termination resistors (3-State)
74LVT162245B
PIN CONFIGURATION
1DIR
1B0
1B1
GND
1B2
1B3
V
CC
1B4
1B5
GND
1
2
3
4
5
6
7
8
9
10
48 1OE
47 1A0
46 1A1
LOGIC SYMBOL (IEEE/IEC)
1OE
1DIR
48
1
G3
3 EN1 (BA)
3 EN2 (AB)
2OE
45 GND
2DIR
44 1A2
43 1A3
42 V
CC
41 1A4
40 1A5
39 GND
38 1A6
37 1A7
36 2A0
35 2A1
1A7
34 GND
2A0
33 2A2
32 2A3
31 V
CC
30 2A4
29 2A5
28 GND
27 2A6
26 2A7
25 2OE
2A1
2A2
2A3
2A4
2A5
2A6
2A7
35
33
32
30
29
27
26
1A1
1A2
1A3
1A4
1A5
1A6
46
44
43
41
40
38
37
36
∇
1
2
∇
14
16
17
19
20
22
23
2B1
2B2
2B3
2B4
2B5
2B6
2B7
1A0
47
∇
1
2
∇
3
5
6
8
9
1B5
11
12
13
1B6
1B7
2B0
1B1
1B2
1B3
1B4
2
1B0
25
24
G3
3 EN1 (BA)
3 EN2 (AB)
1B6 11
1B7 12
2B0
13
2B1 14
GND 15
2B2 16
2B3 17
V
CC
18
2B4 19
2B5 20
GND
21
2B6 22
2B7 23
2DIR 24
SV00066
SW00061
FUNCTION TABLE
INPUTS
INPUTS/OUTPUTS
nDIR
L
H
X
nAx
nAx = nBx
Inputs
Z
nBx
Inputs
nBx = nAx
Z
nOE
L
SCHEMATIC OF EACH OUTPUT
V
CC
V
CC
L
H
H
L
X
Z
OUTPUT
20Ω
22Ω
= High voltage level
= Low voltage level
= Don’t care
= High Impedance “off ” state
SW00202
1998 Feb 19
3
Philips Semiconductors
Product specification
3.3V 16-bit transceiver with 30Ω
termination resistors (3-State)
ABSOLUTE MAXIMUM RATINGS
1,2
SYMBOL
V
CC
I
IK
V
I
I
OK
V
OUT
I
O
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
Output in High state
Storage temperature range
V
O
< 0
Output in Off or High state
Output in Low state
V
I
< 0
CONDITIONS
74LVT162245B
RATING
–0.5 to +4.6
–50
–0.5 to +7.0
–50
–0.5 to +7.0
128
UNIT
V
mA
V
mA
V
mA
–64
–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.
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
Input voltage
High-level output current
Low-level output current
Input transition rise or fall rate; Outputs enabled
Operating free-air temperature range
–40
2.7
0
2.0
0.8
–12
12
10
+85
LIMITS
MAX
3.6
5.5
V
V
V
V
mA
mA
ns/V
°C
UNIT
1998 Feb 19
4
Philips Semiconductors
Product specification
3.3V 16-bit transceiver with 30Ω
termination resistors (3-State)
74LVT162245B
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = –40°C to +85°C
MIN
V
IK
V
OH
V
OL
Input clamp voltage
High-level output voltage
Low-level output voltage
V
CC
= 2.7V; I
IK
= –18mA
V
CC
= 3.0V; I
OH
= –12mA
V
CC
= 3.0V; I
OL
= 12mA
V
CC
= 3.6V; V
I
= V
CC
or GND
Input leakage current
I
I
V
CC
= 0 or 3.6V; V
I
= 5.5V
V
CC
= 3.6V; V
I
= V
CC
V
CC
= 3.6V; V
I
= 0
I
OFF
Output off current
Bus Hold
B H ld current
t
A or B outputs
6
Current into an output in the
High state when V
O
> V
CC
Power up/down 3-State output
current
3
V
CC
= 0V; V
I
or V
O
= 0 to 4.5V
V
CC
= 3V; V
I
= 0.8V
I
HOLD
V
CC
= 3V; V
I
= 2.0V
V
CC
= 0V to 3.6V; V
CC
= 3.6V
I
EX
I
PU/PD
I
CCH
I
CCL
I
CCZ
∆I
CC
Additional supply current per
input pin
2
Quiescent supply current
V
O
= 5.5V; V
CC
= 3.0V
V
CC
≤
1.2V; V
O
= 0.5V to V
CC
; V
I
= GND or V
CC
;
OE/OE = Don’t care
V
CC
= 3.6V; Outputs High, V
I
= GND or V
CC,
I
O
= 0
V
CC
= 3.6V; Outputs Low, V
I
= GND or V
CC,
I
O
= 0
V
CC
= 3.6V; Outputs Disabled; V
I
= GND or V
CC,
I
O
= 0
5
V
CC
= 3V to 3.6V; One input at V
CC
-0.6V,
Other inputs at V
CC
or GND
75
–75
±500
75
40
0.07
4.2
0.07
0.1
125
±100
0.12
6
0.12
0.2
mA
mA
µA
µA
I/O Data pins
4
Control pins
0.1
0.5
0.1
0.1
130
–130
µA
2.0
TYP
1
0.8
2.5
0.3
0.1
0.8
±1
10
10
-5
±100
µA
µA
MAX
–1.2
V
V
V
UNIT
NOTES:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25°C.
2. This is the increase in supply current for each input at the specified voltage level other than V
CC
or GND
3. This parameter is valid for any V
CC
between 0V and 1.2V with a transition time of up to 10msec. From V
CC
= 1.2V to V
CC
= 3.3V
±
0.3V a
transition time of 100µsec is permitted. This parameter is valid for T
amb
= 25°C only.
4. Unused pins at V
CC
or GND.
5. I
CCZ
is measured with outputs pulled to V
CC
or GND.
6. This is the bus hold overdrive current required to force the input to the opposite logic state.
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF; R
L
= 500Ω; T
amb
= –40°C to +85°C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
MIN
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
nAx to bBx or bBx to nAx
Output enable time
to High and Low level
Output disable time
from High and Low Level
1
2
2
1.0
1.0
1.5
1.5
1.5
1.5
V
CC
= 3.3V
±0.3V
TYP
1
2.5
2.2
3.5
3.2
3.5
4.3
MAX
3.5
3.5
5.3
4.4
4.8
6.7
V
CC
= 2.7V
MAX
3.9
3.9
6.4
5.0
5.1
5.9
ns
ns
ns
UNIT
NOTE:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25°C.
1998 Feb 19
5
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