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Part: 74LVCH32244A
Category:
Logic
Description: 3.3V CMOS 32-BIT Buffer/line Driver With 3-STATE Outputs, 5V Tolerant I/O, And Bus-hold
Company: Integrated Device Technology, Inc.
Datasheet: Download 74LVCH32244A datasheet File size : 143 kB
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Datasheet text preview:
IDT74LVCH32244A 3.3V CMOS 32-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCH32244A 3.3V CMOS 32-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS, 5 VOLT TOLERANT I/O, BUS-HOLD
· Typical tSK(o) (Output Skew) 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) · VCC = 3.3V ± 0.3V, Normal Range · VCC = 2.7V to 3.6V, Extended Range · CMOS power levels (0.4µ W typ. static) µ · All inputs, outputs, and I/O are 5V tolerant · Supports hot insertion · Available in 96-ball LFBGA package
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
· Balanced Output Drivers: ±24mA · Reduced system switching noise
APPLICATIONS:
The LVCH32244A 32-bit buffer/line driver is built using advanced dual metal CMOS technology. This high-speed, low power device offers bus/ backplane interface capability with improved packing density. The device has a flow-through organization for simplifying board layout. The three-state controls operate this device in a Quad-Nibble, Dual-Byte or single 16-bit word mode. All inputs are designed with hysteresis for improved noise margin. All pins of this 32-bit buffer/line driver can be driven from either a 3.3V or 5V device. This feature allows the use of this device as a translator in a mixed 3.3V/5V supply system. The LVCH32244A has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance The LVCH32244A has "bus-hold" which retains the inputs' last state whenever the input goes to a high impedance. This prevents floating inputs and eliminates the need for pull-up/down resistors.
· 5V and 3.3V mixed voltage systems · Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
A3 H4 J3 T4
1OE 1A1 1A2 1A3 1A4
3OE A2 A1 B2 B1 1Y1 1Y2 1Y3 1Y4 3A1 3A2 3A3 3A4
5OE E2 3Y1 E1 F2 F1 3Y2 3Y3 3Y4 5A1 5A2 5A3 5A4
7OE J2 J1 K2 K1 5Y1 5Y2 5Y3 5Y4 7A1 7A2 7A3 7A4
A5
E5
J5 J6 K5 K6
N5 N6 P5 P6
N2 N1 P2 P1
7Y1 7Y2 7Y3 7Y4
A6 B5 B6
E6 F5 F6
2OE 2A1 2A2 2A3 2A4
A4
4OE C2 C1 D2 D1 2Y1 2Y2 2Y3 2Y4 4A1 4A2 4A3 4A4
H3
6OE G2 4Y1 G1 H1 H2 4Y2 4Y3 4Y4 6A1 6A2 6A3 6A4
J4
8OE L2 6Y1 6Y2 6Y3 6Y4 8A1 8A2 8A3 8A4
T3
C5 C6 D5 D6
G5 G6 H6 H5
L5 L6 M5 M6
R5 R6 T6 T5
R2 R1 T1 T2
8Y1 8Y2 8Y3 8Y4
L1 M2
M1
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2 0 0 0 Integrated Device Technology, Inc.
FEBRUARY 2000
DSC-4766/1
IDT74LVCH32244A 3.3V CMOS 32-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
6
1A2
1A4
2A2
2A4
3A2
3A4
4A2
4A3
5A2
5A4
6A2
6A4
7A2
7A4
8A2
8A3
5
1A1
1A3
2A1
2A3
3A1
3A3
4A1
4A4
5A1
5A3
6A1
6A3
7A1
7A3
8A1
8A4
4 2OE
GND GND
1Y3
VCC VCC
GND
GND
VCC VCC
GND GND
3OE
6OE
GND GND
5Y3
VCC VCC
6Y1
GND GND
6Y3
GND GND
7Y1
VCC VCC
7Y3
GND GND
8Y1
7OE
3
1OE
GND
2Y3
GND
3Y1
4OE
5OE
8OE
2
1Y1
2Y1
3Y3
4Y1
4Y4
5Y1
8Y4
1
1Y2 A
1Y4 B
2Y2 C
2Y4 D
3Y2 E
3Y4 F
4Y2 G
4Y3 H
5Y2 J
5Y4 K
6Y2 L
6Y4 M
7Y2 N
7Y4 P
8Y2 R
8Y3 T
LFBGA TOPVIEW
96 BALL LFBGA PACKAGE ATTRIBUTES
1.5 mm Max. 1.4 mm Nom. 1.3 mm Min.
0.8mm
6
5 4 3 2 1 A B C D E F G H J K L M N P R T
TOP VIEW
A 1 2 3
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
5.5mm
4 5 6
13.5mm
2
IDT74LVCH32244A 3.3V CMOS 32-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max VTERM TSTG IOUT IIK IOK ICC ISS Terminal Voltage with Respect to GND Storage Temperature DC Output Current Continuous Clamp Current, VI < 0 or VO < 0 Continuous Current through each VCC or GND 0.5 to +6.5 65 to +150 50 to +50 50 ±100
Unit V °C mA mA mA
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol CI N CO U T CI / O Parameter(1) Input Capacitance Output Capacitance I/O Port Capacitance Conditions VIN = 0V VOUT = 0V VIN = 0V Typ. 4.5 6.5 6.5 Max. 6 8 8 Unit pF pF pF
NOTE: 1 . As applicable to the device type.
NOTE: 1 . Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
PIN DESCRIPTION
Pin Names xOE xAx xYx Data Inputs
(1)
FUNCTION TABLE(1)
Description Inputs xOE L L H
NOTE: 1 . H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance
Outputs xAx L H X xYx L H Z
3-State Output Enable Inputs (Active LOW) 3-State Outputs
NOTE: 1 . These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
BUS-HOLD CHARACTERISTICS
Symbol IBHH IBHL IBHH IBHL IBHHO IBHLO
NOTES: 1 . Pins with Bus-Hold are identified in the pin description. 2 . Typical values are at VCC = 3.3V, +25°C ambient.
Parameter(1) Bus-Hold Input Sustain Current Bus-Hold Input Sustain Current Bus-Hold Input Overdrive Current VCC = 3V VCC = 2.3V VCC = 3.6V
Test Conditions VI = 2V VI = 0.8V VI = 1.7V VI = 0.7V VI = 0 to 3.6V
Min. 75 75 -- -- --
Typ.(2) -- -- -- -- --
Max. -- -- -- -- ±500
Unit µA µA µA
3
IDT74LVCH32244A 3.3V CMOS 32-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 40°C to +85°C
Symbol VIH VIL IIH IIL IOZH IOZL IO F F VIK VH ICCL ICCH ICCZ ICC High Impedance Output Current (3-State Output pins) Input/Output Power Off Leakage Clamp Diode Voltage Input Hysteresis Quiescent Power Supply Current VCC = 0V, VIN or VO 5.5V VCC = 2.3V, IIN = 18mA VCC = 3.3V VCC = 3.6V VIN = GND or VCC -- -- -- -- -- -- -- 0.7 100 -- -- -- ±50 1.2 -- 10 10 500 µA V mV µA VCC = 3.6V VO = 0 to 5.5V -- -- ±10 µA Parameter Input HIGH Voltage Level Input LOW Voltage Level Input Leakage Current VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V VI = 0 to 5.5V Test Conditions Min. 1.7 2 -- -- -- Typ.(1) -- -- -- -- -- Max. -- -- 0.7 0.8 ±5 µA V Unit V
Quiescent Power Supply Current Variation
3.6 VIN 5.5V(2) One input at VCC - 0.6V, other inputs at VCC or GND
µA
NOTES: 1 . Typical values are at VCC = 3.3V, +25°C ambient. 2 . This applies in the disabled state only.
OUTPUT DRIVE CHARACTERISTICS
Symbol VOH Parameter Output HIGH Voltage VCC = 2.3V VCC = 2.3V VCC = 2.7V VCC = 3V VCC = 3V VOL Output LOW Voltage VCC = 2.3V to 3.6V VCC = 2.3V VCC = 2.7V VCC = 3V IOH = 24mA IOL = 0.1mA IOL = 6mA IOL = 12mA IOL = 12mA IOL = 24mA Test Conditions(1) VCC = 2.3V to 3.6V IOH = 0.1mA IOH = 6mA IOH = 12mA Min. VCC 0.2 2 1.7 2.2 2.4 2.2 -- -- -- -- -- Max. -- -- -- -- -- -- 0.2 0.4 0.7 0.4 0.55 V Unit V
NOTE: 1 . VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = 40°C to + 85°C.
4
IDT74LVCH32244A 3.3V CMOS 32-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C
Symbol CPD CPD Parameter Power Dissipation Capacitance per Buffer/Driver Outputs enabled Power Dissipation Capacitance per Buffer/Driver Outputs disabled Test Conditions CL = 0pF, f = 10Mhz Typical 68 8 Unit pF
SWITCHING CHARACTERISTICS(1)
VCC = 2.7V Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) Parameter Propagation Delay xAx to xYx Output Enable Time xOE to xYx Output Disable Time xOE to xYx Output Skew(2) -- -- -- 500 ps 1.5 6.2 1.8 5.8 ns 1.5 5.8 1 4.6 ns Min. 1.5 Max. 4.7 VCC = 3.3V ± 0.3V Min. 1.1 Max. 4.1 Unit ns
NOTES: 1 . See TEST CIRCUITS AND WAVEFORMS. TA = 40°C to + 85°C. 2 . Skew between any two outputs of the same package and switching in the same direction.
5
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