74F651A Datasheet, PDF (2/14 Pages) NXP Semiconductors – Transceivers/registers

Philips Semiconductors
Transceivers/registers
Product specification
74F651A/74F652A
74F651A Octal transceiver/register, inverting (3-State)
74F652A Octal transceiver/register, non-inverting (3-State)
FEATURES
• Combines 74F245 and two 74F374 type functions in one chip
• High impedance base inputs for reduced loading (70µA in high
and low states)
• Independent registers for A and B buses
• Multiplexed real-time and stored data
• Choice of non-inverting and inverting data paths
• 3-State outputs
• Industrial temperature range available (–40°C to +85°C) for
74F652A
DESCRIPTION
The 74F651A and 74F652A transceivers/registers consist of bus
transceiver circuits with 3–State outputs, D–type flip–flops, and
control circuitry arranged for multiplexed transmission of data
directly from the input bus or the internal registers. Data on the A or
B bus will be clocked into the registers as the appropriate clock pin
goes high. Output enable (OEAB, OEBA) and select (SAB, SBA)
pins are provided for bus management.
TYPE
74F651/74F652
74F651A/74F652A
TYPICAL f_max
110MHz
175MHz
TYPICAL SUPPLY CURRENT( TOTAL)
140mA
110mA
ORDERING INFORMATION
DESCRIPTION
24–pin plastic slim DIP (300mil)
24–pin plastic SOL
ORDER CODE
COMMERCIAL RANGE
V_CC = 5V ±10%,
T_amb = 0°C to +70°C
N74F651AN, N74F652AN
INDUSTRIAL RANGE
V_CC = 5V ±10%,
T_amb = –40°C to +85°C
I74F652AN
N74F651AD, N74F652AD
I74F652AD
PKG DWG #
SOT222-1
SOT137-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
A0 – A7, B0 – B7
A, B inputs
3.5/0.116
CPAB, CPBA
A–to–B, B–to–A clock inputs
1.0/0.033
SAB, SBA
A–to–B, B–to–A select inputs
1.0/0.033
OEAB, OEBA
A–to–B, B–to–A output enable inputs
1.0/0.033
A0 – A7, B0 – B7
A, B outputs for N74F651, N74F652
750/106.7
A0 – A7, B0 – B7
A, B outputs for N74F651A, N74F652A
750/80
A0 – A7, B0 – B7
A, B outputs for I74F652A
750/60
Note to input and output loading and fan out table
1. One (1.0) FAST unit load is defined as: 20µA in the high state and 0.6mA in the low state.
LOAD VALUE HIGH/LOW
70µA/70µA
20µA/20µA
20µA/20µA
20µA/20µA
15mA/64mA
15mA/48mA
15mA/36mA
1999 Jun 23
2
853–1126 21852