Motorola MC100LVEL29 MC100EL29 User Guide (1)

SEMICONDUCTOR TECHNICAL DATA

The MC100LVEL29 is a dual master–slave flip flop. The device features fully differential Data and Clock inputs as well as outputs. The MC100EL29 is pin and functionally equivalent to the MC100LVEL29 but is specified for operation at the standard 100E ECL voltage supply. A VBB output is provided for AC coupling, refer to the interfacing section of the ECLin PS Data Book (DL140) for more information on AC coupling ECL signals. Data enters the master latch when the clock is LOW and transfers to the slave upon a positive transition on the clock input. The differential inputs have special circuitry which ensures device stability under open input conditions. When both differential inputs are left open the D input will pull down to VEE and the D input will bias around

DW SUFFIX

VCC/2. The outputs will go to a defined state, however the state will be

PLASTIC SOIC PACKAGE

random based on how the flip flop powers up.

CASE 751D–04

Both flip flops feature asynchronous, overriding Set and Reset inputs. Note that the Set and Reset inputs cannot both be HIGH simultaneously.

1100MHz Flip–Flop Toggle Frequency 20–lead SOIC Package 580ps Propagation Delays

TRUTH TABLE

Logic Diagram and Pinout: 20-Lead SOIC (Top View) CLK

R0 VCC Q0 Q0 S0 S1 VCC Q1 Q1 VEE

QQ QQ

Undef Undef

SR RS

CLKD CLKD Z = LOW to HIGH Transition

PIN NAMES

Pins Function D0–D1 Data Inputs

D0 CLK0 CLK0 VBB D1D0 D1 CLK1 CLK1 R1 R0–R1 Reset Inputs

CLK0–CLK1 Clock Inputs S0–S1 Set Inputs

MC100LVEL29 DC CHARACTERISTICS (VEE = –3.0V to –3.8V; VCC = GND)

Symbol Characteristic Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit IEE Power Supply Current m A VBB Output Reference Voltage –1.38 –1.26 –1.38 –1.26 –1.38 –1.26 –1.38 –1.26 IIH Input HIGH Current µA IIL Input LOW Current Dn Inputs 0.5 0.5 0.5 0.5 µA

Dn Inputs –300 –300 –300 –300

4–1 REV 1 Motorola, Inc. 1996