Input

@formField('input', [
    'name' => 'subtitle',
    'label' => 'Subtitle',
    'maxlength' => 100,
    'required' => true,
    'note' => 'Hint message goes here',
    'placeholder' => 'Placeholder goes here',
])

@formField('input', [
    'translated' => true,
    'name' => 'subtitle_translated',
    'label' => 'Subtitle (translated)',
    'maxlength' => 250,
    'required' => true,
    'note' => 'Hint message goes here',
    'placeholder' => 'Placeholder goes here',
    'type' => 'textarea',
    'rows' => 3
])

Option	Description	Type/values	Default value
name	Name of the field	string
label	Label of the field	string
type	Type of input field	text textarea email number password url	text
translated	Defines if the field is translatable	true false	false
maxlength	Max character count of the field	integer
note	Hint message displayed above the field	string
placeholder	Text displayed as a placeholder in the field	string
prefix	Text displayed as a prefix in the field	string
rows	Sets the number of rows in a textarea	integer	5
required	Displays an indicator that this field is required A backend validation rule is required to prevent users from saving	true false	false
disabled	Disables the field	true false	false
readonly	Sets the field as readonly	true false	false
default	Sets a default value if empty	string

A migration to save an input field would be:

Schema::table('articles', function (Blueprint $table) {
    ...
    $table->string('subtitle', 100)->nullable();
    ...

});
// OR
Schema::table('article_translations', function (Blueprint $table) {
    ...
    $table->string('subtitle', 250)->nullable();
    ...
});

If this input field is used for longer strings then the migration would be:

Schema::table('articles', function (Blueprint $table) {
    ...
    $table->text('subtitle')->nullable();
    ...
});

When used in a block, no migration is needed.