Philips Semiconductors Product data
74ABT245Octal transceiver with direction pin (3-State)
2
2003 Feb 06
FEATURES
• Octal bidirectional bus interface
• 3-State buffers
• Output capability: +64 mA/–32 mA
• Latch-up protection exceeds 500 mA per Jedec Std 17
• ESD protection exceeds 2000 V per MIL STD 833 Method 3015
and 200 V per Machine Model
• Power-up 3-State
• Live insertion/extraction permitted
• Inputs are disabled during 3-State mode
DESCRIPTION
The 74ABT245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT245 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.
QUICK REFERENCE DATA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25 °C; GND = 0 V
TYPICAL UNIT
t
PLH
t
PHL
Propagation delay
An to Bn or Bn to An
C
L
= 50 pF; V
CC
= 5 V
2.2
2.9
ns
C
IN
Input capacitance DIR, OE V
I
= 0 V or V
CC
4 pF
C
I/O
I/O pin capacitance Outputs disabled; V
O
= 0 V or V
CC
7 pF
I
CCZ
Total supply current Outputs disabled; V
CC
=5.5 V 50 µA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE PART NUMBER DWG NUMBER
20-Pin plastic SO –40 °C to +85 °C 74ABT245D SOT163-1
20-Pin Plastic SSOP Type II –40 °C to +85 °C 74ABT245DB SOT339-1
20-Pin Plastic TSSOP Type I –40 °C to +85 °C 74ABT245PW SOT360-1
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
DIR
A0
A1
A2
A3
A4
A5
A6
A7
GND
V
CC
OE
B0
B1
B2
B3
B4
B5
B6
B7
SA00121
PIN DESCRIPTION
PIN
NUMBER
SYMBOL NAME AND FUNCTION
1 DIR Direction control input
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 Output enable input (active-LOW)
10 GND Ground (0 V)
20 V
CC
Positive supply voltage
