MC74LVQ652 Datasheet, PDF (1/10 Pages) Motorola, Inc – LOW-VOLTAGE CMOS OCTAL TRANSCEIVER/ REGISTERED TRANSCEIVER WITH DUAL ENABLE

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Low-Voltage Quiet CMOS
Octal Transceiver/Registered
Transceiver With Dual Enable
(3-State, Non-Inverting)
The MC74LVQ652 is a high performance, non–inverting octal
transceiver/registered transceiver operating from a 2.7 to 3.6V supply.
High impedance TTL compatible inputs significantly reduce current
loading to input drivers while TTL compatible outputs offer improved
switching noise performance. The MC74LVQ652 is suitable for memory
address driving and all TTL level bus oriented transceiver applications.
Data on the A or B bus will be clocked into the registers as the
appropriate clock pin goes from a LOW–to–HIGH logic level. Two Output
Enable pins (OEBA, OEAB) are provided to control the transceiver
outputs. In the transceiver mode, data present at the high impedance port
may be stored in either the A or the B register or in both. The select
controls (SBA, SAB) can multiplex stored and real–time (transparent
mode) data. In the isolation mode (both outputs disabled), A data may be
stored in the B register or B data may be stored in the A register. When in
the real–time mode, it is possible to store data without using the internal
registers by simultaneously enabling OEAB and OEBA. In this
configuration, each output reinforces its input.
• Designed for 2.7 to 3.6V VCC Operation – Ideal for Low Power/Low
Noise Applications
• Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
• Guaranteed Skew Specifications
• Guaranteed Incident Wave Switching into 75Ω
• Low Static Supply Current (10µA) Substantially Reduces System Power
Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V
VCC CBA SBA OEBA B0 B1 B2 B3 B4 B5 B6 B7
24 23 22 21 20 19 18 17 16 15 14 13
Pinout: 24–Lead Package (Top View)
MC74LVQ652
LVQ
LOW–VOLTAGE CMOS
OCTAL TRANSCEIVER/
REGISTERED TRANSCEIVER
WITH DUAL ENABLE
24
1
24
1
24
1
DW SUFFIX
PLASTIC SOIC
CASE 751E–04
SD SUFFIX
PLASTIC SSOP
CASE 940D–03
DT SUFFIX
PLASTIC TSSOP
CASE 948H–01
PIN NAMES
Pins
A0–A7
B0–B7
CAB, CBA
SAB, SBA
OEBA, OEAB
Function
Side A Inputs/Outputs
Side B Inputs/Outputs
Clock Pulse Inputs
Select Control Inputs
Output Enable Inputs
1 2 3 4 5 6 7 8 9 10 11 12
CAB SAB OEAB A0 A1 A2 A3 A4 A5 A6 A7 GND
12/95
© Motorola, Inc. 1995
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