参数资料
型号: CBT3244
厂商: NXP Semiconductors N.V.
英文描述: Octal bus switch with Quad Output Enables
中文描述: 带四输出使能的8个总线开关
文件页数: 2/10页
文件大小: 83K
代理商: CBT3244
Philips Semiconductors
Preliminary specification
CBT3244
Octal bus switch with Quad Output Enables
2
1998 Dec 08
FEATURES
Functionally equivalent to QS3244
Standard ’244-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)
DESCRIPTION
The CBT3244 provides eight bits of high-speed TTL-compatible bus
switching in a standard ’244 device pinout. The low on-state
resistance of the switch allows connections to be made with minimal
propagation delay.
The CBT3244 device is organized as two 4-bit low-impedance
switches with separate output-enable (OE) inputs. When OE is low,
the switch is on and data can flow from port A to port B, or vice
versa. When OE is high, the switch is open and high-impedance
state exists between the two ports.
The CBT3244 is characterized for operation from –40
°
C
to 85
°
C.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
°
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
An to Yn
C
L
= 50pF; V
CC
= 5V
ns
C
IO(OFF)
Pin capacitance (OFF state)
V
O
= 3V or 0V
6
pF
I
CCZ
Total supply current
Outputs disabled; V
CC
=5.5V
μ
A
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin plastic SO
–40
°
C
to 85
°
C
CBT3244 D
CBT3244 D
SOT163-1
20-Pin Plastic SSOP Type II
–40
°
C
to 85
°
C
CBT3244 DB
CBT3244 DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40
°
C
to 85
°
C
CBT3244 PW
CBT3244PW DH
SOT360-1
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1OE
1A1
2B4
1A2
2B3
1A3
2B2
1A4
2B1
1B4
GND
2A2
1B3
2A3
1B2
2A4
1B1
2OE
V
CC
2A1
SA00501
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1, 19
1OE, 2OE
Output enable
2, 4, 6, 8
1A1–1A4
11, 13, 15, 17
2A1–2A4
18, 16, 14, 12
1B1–1B4
9, 7, 5, 3
2B1–2B4
10
GND
Ground (0V)
20
V
CC
Positive supply voltage
相关PDF资料
PDF描述
CBT3244D Octal bus switch with Quad Output Enables
CBT3244DB Octal bus switch with Quad Output Enables
CBT3244PW Octal bus switch with Quad Output Enables
CBT3244PWDH Octal bus switch with Quad Output Enables
CBT3245A Octal bus switch
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