Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
FEATURES
•
Octal bidirectional bus interface
•
3-State buffers
•
Output capability: +12mA/–32mA
•
Latch-up protection exceeds 500mA per Jedec Std 17
•
ESD protection exceeds 2000 V per MIL STD 833 Method 3015
and 200 V per Machine Model
DESCRIPTION
The 74ABT2245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed.
The 74ABT2245 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 74ABT2245 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
receivers/transmitters.
The 74ABT2245 is the same as the 74ABT245-1. The part number
has been changed to reflect industry standards.
•
Power-up 3-State
•
Live insertion/extraction permitted
•
Same as 74ABT245-1
•
Outputs include series resistance of 30Ω, making external
termination resistors unnecessary
•
Inputs are disabled during 3-State mode
QUICK REFERENCE DATA
SYMBOL
t
PLH
t
PHL
C
IN
C
I/O
I
CCZ
PARAMETER
Propagation delay
An to Bn or Bn to An
Input capacitance DIR, OE
I/O pin capacitance
Total supply current
CONDITIONS
T
amb
= 25°C; GND = 0V
C
L
= 50pF; V
CC
= 5V
V
I
= 0V or V
CC
Outputs disabled; V
O
= 0V or V
CC
Outputs disabled; V
CC
=5.5V
TYPICAL
3.9
4
7
50
UNIT
ns
pF
pF
µA
ORDERING INFORMATION
PACKAGES
20-Pin Plastic DIP
20-Pin plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74ABT2245 N
74ABT2245 D
74ABT2245 DB
74ABT2245 PW
NORTH AMERICA
74ABT2245 N
74ABT2245 D
74ABT2245 DB
7ABT2245PW DH
DWG NUMBER
SOT146-1
SOT163-1
SOT339-1
SOT360-1
PIN CONFIGURATION
DIR
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
9
20 V
CC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11
B7
PIN DESCRIPTION
PIN NUMBER
1
2, 3, 4, 5, 6, 7, 8, 9
18, 17, 16, 15, 14,
13, 12, 11
19
10
20
SYMBOL
DIR
A0 – A7
B0 – B7
OE
GND
V
CC
NAME AND FUNCTION
Direction control input
Data inputs/outputs (A side)
Data inputs/outputs (B side)
Output enable input
(active-Low)
Ground (0V)
Positive supply voltage
GND 10
SA00121
1998 Jan 16
2
853-1761 18865
PHILIPS [ NXP SEMICONDUCTORS ]
