E7804 Datasheet, PDF (1/41 Pages) Semtech Corporation – 133 MHZ Quad Pin Electronics Driver and Window Comparator

TEST AND MEASUREMENT PRODUCTS
Description
The E7804 is a quad channel, monolithic ATE pin
electronics solution manufactured in a high-performance
BiCMOS process.
The E7804 operates up to 133 MHz with up to 3V signals,
and 100 MHz with 5V signals.
Each channel has a three-statable driver capable of
generating 5.4V swings over a –0.2V, +5.2V range. Drivers
have independent high and low input levels that are
buffered internally. Drivers feature a self-calibrating source
impedance, programmable in the range 48Ω to 110Ω. The
source impedance of all drivers matches R_EREF/100, where
R_EREF is the external reference resistor. Each channel’s
dual comparator has a range of –2.0V to +5.5V.
A channel’s driver and comparators are connected
internally via high voltage switches to the VIO pin. These
switches provide a means to disconnect the driver and
comparator from the VIO pin.
E7804
133 MHZ Quad Pin Electronics
Driver and Window Comparator
Features
• Four Integrated Three-Statable Drivers and
Window Comparators
• Driver Voltage Range –0.2V, +5.2V
• Comparator Voltage Range –2.0V to +5.5V
• Internal Disconnect Switches
• Internal Switches to an External PMU,
Range –4.75V to +9.75V, up to ±40 mA
• Per Pin Pull-Up/Down 2KΩ to (0V to +5V)
• Per Pin Continuity Test (Force Current up to
–250 µA, Limit Voltage 0 to –2V)
• Self-Calibrating Driver Source Impedance to an
External Reference (48Ω to 110Ω)
• Low Power Dissipation (250mW/channel quiescent)
• 128 Pin MQFP Package (with Internal Heat Spreader)
Applications
• Design for Test/Structural Pins in ATE
• Low Cost
– Logic Testers
– Memory Testers
The E7804 contains an independent network of high
voltage switches intended to connect an external
Parametric Measurement Unit (EPMU) to any channel (or
channels) output on the channel’s POUT pin. The EPMU
can have a range of –4.75V to +9.75V, up to ±40 mA.
Typically, a channel’s VIO and POUT pins are connected
together externally.
Each channel contains a continuity test circuit (CTC) with a
switch to connect it to the channel’s POUT pin. This circuit
forces a current up to –250 µA, and tests the resulting
voltage with a 0 to –2V programmable limit. The result is
tested by the channel’s comparator.
Each channel contains a 2KΩ pull-up resistor with a switch
to connect to the channel’s POUT pin.
The channel’s function and connections are programmed
using a serial interface. An individual channel’s function
can be programmed, or a function of any set of channels
(of multiple E7804s) can be programmed in parallel where
each channel can belong to none, one, or more (up to 8)
sets.
Functional Block Diagram
DVH[0]
DHI[0]
DEN[0]
DVL[0]
OPN[0]
CVA[0]
QA[0]
QB[0]
CVB[0]
LOAD
RESET*
DVH[3]
DHI[3]
DEN[3]
DVL[3]
OPN[3]
CVA[3]
QA[3]
QB[3]
CVB[3]
Control
Logic
48 110Ω
CTC
48 110Ω
CTC
VIO[0]
POUT[0]
2K
VIO[3]
POUT[3]
2K
The E7804 features the inclusion of all four channels of
pin electronics into a 128 pin package.
SDOUT
ANODE PMU_OUT
Revision 7 / February 26, 2007

United States Patent 7,064,575
www.semtech.com