© 1998 Élantec, Inc.

General Description

The EL7457C is an ultra-high speed, non-inverting quad CMOS

driver. It is capable of running at clock rates up to 40MHz and features

2A peak drive capability and a nominal on-resistance of just 3

Ω. The

EL7457C is ideal for driving highly capacitive loads, such as storage

and vertical clocks in CCD applications. It is also well suited to ATE

pin driving, level-shifting and clock-driving applications.

The EL7457C is capable of running from single or dual power sup-

plies while using ground referenced inputs. Each output can be

switched to either the high (VH) or low (VL) supply pins, depending

on the related input pin. The inputs are compatible with both 3V and

5V CMOS and TTL logic. The output enable (OE) pin can be used to

put the outputs into a high-impedance state. This is especially useful in

CCD applications, where the driver should be disabled during power

down.

The EL7457C also features very fast rise and fall times which are

matched to within 1ns. The propagation delay is also matched between

rising and falling edges to within 2ns.

The EL7457C is available in both the 16-Pin QSOP and 16-Pin SOIC

packages. It is specified for operation over the -40°C to +85°C temper-

ature range.

Pin Layout Diagram

OUTB

OUTA

NC

OUTC

VH

INA

OE

VL

NC

IND

INC

OUTD

EL7457C

1

2

3

4

16

15

14

13

5

6

7

12

11

10

8

9

GND

INB

Features

• Clocking Speeds Up To 40MHz

• 4 Channels

• 12 ns tr/tf at 1000pF Cload

• 1ns Rise and Fall Time Mismatch

• 1.5ns Prop Delay Mismatch

• Low Quiescent Current, <1mA

• Fast Output Enable Function, 12ns

• Wide Output Voltage Range

• 8V >VL >-5V

• -2V < VH < 15V

• 2A Peak Drive

• 3

Ω On Resistance

• Input Level Shifters

• TTL/CMOS Input Compatible

Applications

• CCD Drivers

• Digital Cameras

• Pin Drivers

• Clock / Line Drivers

• Ultrasound Transducer Drivers

• Ultrasonic and RF Generators

• Level Shifting

Ordering Information

Part No.

Temp. Range

Package

Outline #

EL7457CU

-40°C to +85°C

16-Pin QSOP

MDP0040

EL7457CS

-40°C to +85°C

16-Pin SO

MDP0027

EL7457C

40MHz Non-Inverting Quad CMOS Driver