CBT3245 Philips Semiconductors, CBT3245 Datasheet - Page 2

• Manufacturer Part Number: CBT3245
• Description: Octal bus switch with output enable
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
ORDERING INFORMATION
PIN CONFIGURATION
20-Pin plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
1998 Dec 08
Functionally equivalent to QS3245
Standard ’245-type pinout
5 switch connection between two ports
TTL compatible control input levels
Package options include plastic small outline (D), shrink small
outline (DB), thin shrink small outline (TSSOP)
Octal bus switch with output enable
SYMBOL
C
IO(OFF)
I
t
t
PLH
PHL
CCZ
PACKAGES
Propagation delay
An to Yn
Pin capacitance (OFF state)
Total supply current
GND
NC
A1
A2
A3
A4
A5
A6
A7
A8
10
1
2
3
4
5
6
7
8
9
PARAMETER
TEMPERATURE RANGE
SA00507
20
19
18
17
16
15
14
13
12
11
V
OE
B1
B2
B3
B4
B5
B6
B7
B8
–40 C to 85 C
–40 C to 85 C
–40 C to 85 C
CC
C
V
Outputs disabled; V
O
L
= 50pF; V
= 3V or 0V
OUTSIDE NORTH AMERICA
2
CC
T
amb
DESCRIPTION
The CBT3245 provides eight bits of high-speed TTL-compatible bus
switching in a standard ’245 device pinout. The low on-state
resistance of the switch allows connections to be made with minimal
propagation delay.
The CBT3245 device is organized as one 8-bit switch. When enable
(OE) is low, the switch is on and port A is connected to port B.
When OE is high, the switch is open and a high-impedance state
exists between the two ports.
The CBT3245 is characterized for operation from –40 C to 85 C.
= 5V
PIN DESCRIPTION
CBT3245 PW
CBT3245 DB
2, 3, 4, 5, 6, 7, 8, 9
CBT3245 D
18, 17, 16, 15, 14,
CONDITIONS
= 25 C; GND = 0V
CC
PIN NUMBER
13, 12, 11
=5.5V
19
10
20
1
SYMBOL
NORTH AMERICA
CBT3245PW DH
A1–A8
B1–B8
GND
V
NC
OE
CBT3245 DB
CBT3245 D
CC
No internal connection
Output enable input
Ground (0V)
Positive supply voltage
TYPICAL
NAME AND FUNCTION
Preliminary specification
6
CBT3245
DWG NUMBER
SOT163-1
SOT339-1
SOT360-1
UNIT
pF
ns
A