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74ALVCH16245 Datasheet

Low-Voltage 16-Bit Transceiver

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74ALVCH16245
Low−Voltage 16−Bit
Transceiver with Bus Hold
1.8/2.5/3.3 V
(3State, NonInverting)
The 74ALVCH16245 is an advanced performance, noninverting
16bit transceiver. It is designed for very highspeed, very lowpower
operation in 1.8 V, 2.5 V or 3.3 V systems.
The 74ALVCH16245 is designed with byte control. It can be
operated as two separate octals, or with the controls tied together, as a
16bit wide function. The Transmit/Receive (T/Rn) inputs determine
the direction of data flow through the bidirectional transceiver.
Transmit (activeHIGH) enables data from A ports to B ports; Receive
(activeLOW) enables data from B to A ports. The Output Enable
inputs (OEn), when HIGH, disable both A and B ports by placing them
in a HIGH Z condition. The data inputs include active bushold
circuitry, eliminating the need for external pullup resistors to hold
unused or floating inputs at a valid logic state.
Designed for Low Voltage Operation: VCC = 1.65 3.6 V
3.6 V Tolerant Inputs and Outputs
High Speed Operation: 3.0 ns max for 3.0 to 3.6 V
3.7 ns max for 2.3 to 2.7 V
6.0 ns max for 1.65 to 1.95 V
Static Drive: ±24 mA Drive at 3.0 V
±12 mA Drive at 2.3 V
±4 mA Drive at 1.65 V
Supports Live Insertion and Withdrawal
Includes Active Bushold to Hold Unused or Floating Inputs at a Valid
Logic State
IOFF Specification Guarantees High Impedance When VCC = 0 V
Near Zero Static Supply Current in All Three Logic States (40 mA)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds ±250 mA @ 125°C
ESD Performance: Human Body Model >2000V; Machine Model >200V
Second Source to Industry Standard 74ALVCH16245
http://onsemi.com
MARKING DIAGRAM
48
48
1
TSSOP48
DT SUFFIX
CASE 1201
74ALVCH16245DT
AWLYYWW
1
A = Assembly
Location
WL = Wafer Lot
YY = Year
WW = Work Week
ORDERING INFORMATION
Device
Package
Shipping
74ALVCH16245DTR TSSOP 2500/Tape & Reel
†To ensure the outputs activate in the 3state condition, the output enable pins
should be connected to VCC through a pullup resistor. The value of the resistor is
determined by the current sinking capability of the output connected to the OE pin.
© Semiconductor Components Industries, LLC, 2006
June, 2006 Rev. 2
1
Publication Order Number:
74ALVCH16245/D


  ON Semiconductor Electronic Components Datasheet  

74ALVCH16245 Datasheet

Low-Voltage 16-Bit Transceiver

No Preview Available !

74ALVCH16245
T/R1 1
B0 2
B1 3
GND 4
B2 5
B3 6
VCC 7
B4 8
B5 9
GND 10
B6 11
B7 12
B8 13
B9 14
GND 15
B10 16
B11 17
VCC 18
B12 19
B13 20
GND 21
B14 22
B15 23
T/R2 24
48 OE1
47 A0
46 A1
45 GND
44 A2
43 A3
42 VCC
41 A4
40 A5
39 GND
38 A6
37 A7
36 A8
35 A9
34 GND
33 A10
32 A11
31 VCC
30 A12
29 A13
28 GND
27 A14
26 A15
25 OE2
1
T/R1
OE1 48
A0:7
Figure 1. 48Lead Pinout
(Top View)
PIN NAMES
Pins
Function
OEn
T/Rn
A0A15
B0B15
Output Enable Inputs
Transmit/Receive Inputs
Side A Inputs or 3State Outputs
Side B Inputs or 3State Outputs
24
T/R2
OE2 25
B0:7 A8:15
B8:15
Figure 2. Logic Diagram
One of Eight
1
T/R1
OE1 48
25
OE2
24
T/R2
EN1
EN2
EN3
EN4
A0 47
A1 46
A2 44
A3 43
A4 41
A5 40
A6 38
A7 37
A8 36
A9 35
A10 33
A11 32
A12 30
A13 29
A14 27
A15 26
1 1
1 2
1 3
1 4
2 B0
3 B1
5 B2
6 B3
8 B4
9 B5
11 B6
12 B7
13 B8
14 B9
16 B10
17 B11
19 B12
20 B13
22 B14
23 B15
Figure 3. IEC Logic Diagram
Inputs
OE1
T/R1
Outputs
Inputs
OE2
T/R2
Outputs
LL
Bus B0:7 Data to Bus A0:7
LL
Bus B8:15 Data to Bus A8:15
LH
Bus A0:7 Data to Bus B0:7
LH
Bus A8:15 Data to Bus B8:15
HX
High Z State on A0:7, B0:7
HX
High Z State on A8:15, B8:15
H = High Voltage Level; L = Low Voltage Level; X = High or Low Voltage Level and Transitions Are Acceptable
http://onsemi.com
2


Part Number 74ALVCH16245
Description Low-Voltage 16-Bit Transceiver
Maker ON Semiconductor
Total Page 10 Pages
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