Philips Semiconductors Product specification
74LVT162245B
3.3V 16-bit transceiver with 30Ω
termination resistors (3-State)
2
1998 Feb 19 853-1766 18989
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
resistors to hold unused inputs
• Live insertion/extraction permitted
• Outputs include series resistance of 30Ω making external
termination resistors unnecessary
• 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
• Same part as 74LVT16245B-1
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 PARAMETER
CONDITIONS
T
amb
= 25°C
TYPICAL UNIT
t
PLH
t
PHL
Propagation delay
nAx to nBx or nBx to nAx
C
L
= 50pF;
V
CC
= 3.3V
2.5 ns
C
IN
Input capacitance DIR, OE V
I
= 0V or 3.0V 3 pF
C
I/O
I/O pin capacitance V
I/O
= 0V or 3.0V 9 pF
I
CCZ
Total supply current Outputs disabled; V
CC
= 3.6V 70 µA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
48-Pin Plastic SSOP Type III –40°C to +85°C 74LVT162245B DL VT162245B DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74LVT162245B DGG VT162245B DGG SOT362-1
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
1, 24 nDIR Direction control input
47, 46, 44, 43,
41, 40, 38, 37,
36, 35, 33, 32,
30, 29, 27, 26
nA0 – nA7 Data inputs/outputs (A side)
2, 3, 5, 6, 8, 9,
11, 12, 13, 14,
16, 17, 19, 20,
22, 23
nB0 – nB7 Data inputs/outputs (B side)
25, 48 nOE
Output enable input
(active-Low)
4, 10, 15, 21, 28,
34, 39, 45
GND Ground (0V)
7, 18, 31, 42 V
CC
Positive supply voltage
LOGIC SYMBOL
2DIR
24
36
35
33
32
30
29
27
26 23
22
20
19
17
16
14
13
2OE
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
25
1DIR
1
47
46
44
43
41
40
38
37 12
11
9
8
6
5
3
2
1OE
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
48
SA00021
